WO2022153968A1 - Plate orthotic apparatus and plate space adjuster - Google Patents

Abstract

[Problem] The purpose of the present invention is to provide: a plate space adjusting device with which it is possible to more effectively exert a force required for orthodontics on a dentition; and a plate orthotic apparatus equipped with same. [Solution] A plate space adjusting device 50 comprises: a first securing member 60; a second securing member 70; and a space adjustment mechanism 80 which is capable of adjusting the space between the first securing member 60 and the second securing member 70. The space adjustment mechanism 80 comprises: a spring 88 which serves as a biasing member 82 for biasing the first securing member 60 and the second securing member 70 in a direction that separates the respective members away from each other; and a motion range regulating member 86 for regulating the range of motion. The space adjustment mechanism 80 is configured such that: the first securing member 60 comprises a first biasing member insertion part 64; the second securing member 70 comprises a second biasing member insertion part 74; and the spring 88 can be replaced with one having a longer natural length in response to an extension of the space between the first securing member 60 and the second securing member 70.

Description

Floor straightener and floor spacing adjuster

The present invention relates to a floor orthodontic appliance used for orthodontics and a floor spacing adjuster used in the orthodontic appliance.

Conventionally, in orthodontics, an interdental dilator or the like as disclosed in Patent Document 1 below has been used. The interdental dilator of Patent Document 1 includes two pressure transmission nuts, and these nuts are screwed into an operating screw. Further, in this interdental dilator, a pair of guide rods are arranged in parallel via a screw. A collar-shaped stopper is integrally provided at each end of the pair of guide rods. In addition, the nut is provided with a recess that opens on the outer surface so that the stopper engages with the shoulder of the recess and protrudes outward in the axial direction by the depth of the recess from both ends of the guide rod. It is configured. The inner surface of the recess has a plastic lining.

In the prior art, for example, a pair of floor members made of a dental resin or the like, in which a device such as the above-mentioned interdental dilator is embedded, is to be attached to the oral cavity in orthodontics. It is offered as.

Japanese Unexamined Patent Publication No. 58-185149

When the above-mentioned conventional interdental dilator or the like is used in orthodontics, there is a problem that it is difficult to adjust the force applied to the dentition for orthodontics to an appropriate state. Specifically, in the conventional interdental dilator, the distance between the pair of floor members can be adjusted by rotating the screw, but the distance must be adjusted before it is placed in the oral cavity. .. Therefore, in the conventional interdental dilation device, the distance between the pair of floor members can be widened only to the extent that it can be installed in the oral cavity, and there is a problem that it is difficult to optimize the force applied to the dentition. ..

Therefore, as a result of diligent studies, the present inventors have made a distance between the first fixing member fixed to the first floor member forming one of the floor members and the second floor member forming another one of the floor members. As an interval adjusting mechanism for making the adjustment possible, the urging member that exerts an urging force in the direction in which the first fixing member and the second fixing member separate from each other and the direction in which the first fixing member and the second fixing member separate from each other. We repeated studies on those equipped with a movable range regulating member that regulates the movable range to. As a result, the present inventors have found that the problems found in the above-mentioned interdental dilators of the prior art can be solved. However, in order to further improve the orthodontic ability, it has been found that further improvement is necessary so that the force can be applied to the dentition more effectively.

Therefore, an object of the present invention is to provide a floor spacing adjusting device capable of exerting a force required for orthodontics on the dentition more effectively, and a floor orthodontic device equipped with the same.

When the present inventors examined a floor spacing adjusting device having a configuration that utilizes the urging force generated by the urging member as described above, when a spring was used as the urging member, the first fixing member and the second fixing member and the second It has been found that by widening the distance between the fixing members, the urging force becomes smaller than when the distance between the two members is narrow. Therefore, it is found that even when the distance between the first fixing member and the second fixing member is widened, it is possible to exert a sufficient amount of urging force for orthodontics as in the case where the distance between the first fixing member and the second fixing member is narrow. It came to.

(1) The floor spacing adjusting device of the present invention provided based on such findings is a floor orthodontic device that is detachably attached to the oral cavity for orthodontics and is arranged inside the dentition in the oral cavity. The purpose is to adjust the distance between the first floor member forming one of the plurality of floor members and the second floor member forming another one, and the first fixing is fixed to the first floor member. It has a member, a second fixing member fixed to the second floor member, an interval adjusting mechanism capable of adjusting the interval between the first fixing member and the second fixing member, and the interval adjusting. The mechanism provides an urging member that exerts an urging force in the direction in which the first fixing member and the second fixing member separate from each other, and a movable range in the direction in which the first fixing member and the second fixing member separate from each other. The first fixing member has a movable range regulating member to be regulated, the interval adjusting mechanism has a spring forming the urging member, and the first fixing member has a first attachment through which the first end portion of the spring is inserted. The second fixing member has a second urging member insertion portion through which the second end portion of the spring is inserted, and the first fixing member and the second fixing member have a force member insertion portion. It is characterized in that the spring can be changed to one having a long natural length according to the expansion of the interval.

In the floor spacing adjusting device of the present invention, the spring can be changed to a long natural length according to the expansion of the spacing between the first fixing member and the second fixing member. Therefore, in the floor spacing adjusting device of the present invention, even when the spacing between the first fixing member and the second fixing member is widened, a large urging force is applied to the first floor member and the second floor as in the case where the spacing between the first fixing member and the second fixing member is narrow. It can act on the dentition via the member. Therefore, according to the present invention, the force required for orthodontics can be applied to the dentition more effectively, and the effect of orthodontics can be further improved.

Here, in order for the floor orthodontic appliance to fully exert its orthodontic function, it is desirable to further optimize the shape of the floor spacing adjusting apparatus described above. As a result of diligent studies by the present inventors, in order to fully exert the orthodontic function, a force is applied to the gum side (alveolar bone side) rather than to the tip side (tooth tip side) of the tooth. It was found that it is desirable to have a shape that can be used. In addition, it was found that it is preferable to optimize the shape of the floor spacing adjusting device so that the floor member can be made as thin as possible. Furthermore, considering the position of the tongue in the oral cavity, it was found that it is desirable to optimize the shape of the floor spacing adjusting device so that the floor spacing adjusting device can be placed on the front side instead of the back side in the oral cavity. rice field.

(2) Based on such findings, the floor spacing adjusting device of the present invention described above is the bottom surface of the first fixing member and the second fixing member facing the tooth stalk in the mounted state of the floor correction device. At least one of the end portion of the top surface facing the tooth tip side, the boundary portion between the side surface facing sideways and the bottom surface, and the boundary portion between the side surface and the top surface has a chamfered shape. It is good that it is said to be.

According to this configuration, the shape of the floor spacing adjusting device can be optimized so that the floor orthodontic device can fully exert its orthodontic function. Specifically, in the floor spacing adjusting device, the end of the bottom surface facing the gum side is chamfered when the floor correction device is attached, so that the floor correction device can be placed on the gum side (bundle bone) in the oral cavity as much as possible. It can be expected to be placed on the side) and exert a force on the gum side (alveolar bone side). Further, in the floor spacing adjusting device, by forming the end portion of the top surface facing the tooth tip side into a chamfered shape, the shape can be optimized so that the floor member can be made as thin as possible. Further, in the floor spacing adjusting device, the width required for arranging the floor spacing adjusting device in the oral cavity is formed by chamfering the boundary portion between the side surface and the bottom surface facing sideways and the boundary portion between the side surface and the top surface. The shape can be optimized so that the length in the left-right direction) can be suppressed and the floor spacing adjustment device can be placed on the front side of the oral cavity instead of the back side.

(3) The floor spacing adjusting device of the present invention described above includes a support member for supporting the spring, and the support member includes a tubular body or a shaft body capable of interpolating or extrapolating the spring. It can be inserted into the first urging member insertion portion and the second urging member insertion portion together with the spring, and the length of the support member corresponds to the expansion of the distance between the first fixing member and the second fixing member. It is preferable that the spring can be extended stepwise or continuously.

According to this configuration, the spring can be firmly supported even if the distance between the first fixing member and the second fixing member is expanded. This makes it possible to provide a floor spacing adjusting device that can be used stably without causing problems such as rattling, for example.

(4) In the floor spacing adjusting device of the present invention described above, the chamfered shape has a shape that conforms to the opening shapes of the first urging member insertion portion and the second urging member insertion portion. Is good.

According to this configuration, the wall thickness of the first fixing member and the second fixing member can be minimized in the portion where the chamfered shape is formed, and the floor spacing adjusting device can be made compact.

Here, as described above, as a result of diligent studies by the present inventors, in order for the floor orthodontic appliance to sufficiently exert the orthodontic function, the shape of the floor spacing adjusting apparatus is set to the tip side of the tooth (tooth). It was found that it is desirable to have a shape that allows the force to be applied to the gum side (alveolar bone side) rather than the force to be applied to the front side). Specifically, when the urging force generated by the floor spacing adjusting device acts on the tooth tip side, there is a concern that the inclination of the tooth changes. On the other hand, if the urging force generated by the floor spacing adjusting device can be applied to the gingival side (alveolar bone side), there is a high possibility that the interdental space can be widened without changing the inclination of the teeth.

(5) The floor spacing adjusting device of the present invention provided based on such findings is a floor orthodontic device that is detachably attached to the oral cavity for orthodontics and is arranged inside the dentition in the oral cavity. The purpose is to adjust the distance between the first floor member forming one of the plurality of floor members and the second floor member forming another one, and the first floor member is fixed to the first floor member. It has a fixing member, a second fixing member fixed to the second floor member, an interval adjusting mechanism capable of adjusting the interval between the first fixing member and the second fixing member, and the interval. The adjusting mechanism has an urging member that exerts an urging force in the direction in which the first fixing member and the second fixing member separate from each other, and a movable range in the direction in which the first fixing member and the second fixing member separate from each other. Of the outer surface of the first fixing member and the second fixing member, the end portion of the bottom surface facing the dentition side when the floor correction device is attached has a chamfered shape. It is characterized by being.

According to the floor spacing adjusting device having such a configuration, it can be expected that the floor correction device is arranged on the gingival side (alveolar bone side) as much as possible in the oral cavity and the force is applied on the gingival side (alveolar bone side). As a result, if the urging force generated by the floor spacing adjusting device can be applied to the gum side (alveolar bone side), the possibility of widening the tooth spacing without changing the inclination of the teeth increases. Therefore, if the floor spacing adjusting device of the present invention is used for the floor orthodontic device, the tooth inclination is minimized and the space between the teeth is suitable for orthodontics. External force can be applied.

Here, as described above, as a result of diligent studies by the present inventors, it is preferable to optimize the shape of the floor spacing adjusting device in order to make the floor member as thin as possible in the floor straightening device. I got the knowledge. Specifically, if the floor orthodontic appliance is thick, the fit is not good, the position of the tongue in the oral cavity is adversely affected, and the effect of orthodontics is halved. As a result of diligent studies by the present inventors in order to dispel such concerns, it has been found that it is preferable to suppress the thickness of the floor straightening device by optimizing the shape of the floor spacing adjusting device.

(6) The floor spacing adjusting device of the present invention provided based on such findings is a floor orthodontic device that is detachably attached to the oral cavity for orthodontics, and is arranged inside the dentition in the oral cavity. The purpose is to adjust the distance between the first floor member forming one of the plurality of floor members and the second floor member forming another one, and the first floor member is fixed to the first floor member. It has a fixing member, a second fixing member fixed to the second floor member, an interval adjusting mechanism capable of adjusting the interval between the first fixing member and the second fixing member, and the interval. The adjusting mechanism has an urging member that exerts an urging force in the direction in which the first fixing member and the second fixing member separate from each other, and a movable range in the direction in which the first fixing member and the second fixing member separate from each other. Of the outer surface of the first fixing member and the second fixing member, the end of the top surface facing the tooth tip side in the mounted state of the floor orthodontic appliance has a chamfered shape. It is characterized by being said to be.

According to the floor spacing adjusting device having such a configuration, the thickness of the floor straightening device can be minimized. That is, in the floor spacing adjusting device of the present invention, of the outer surfaces of the first fixing member and the second fixing member, the end of the top surface facing the tooth tip side in the mounted state of the floor straightening device has a chamfered shape. Since it has such a configuration, for example, when the first fixing member or the second fixing member is embedded or fixed to the first floor member or the second floor member, the chamfered shape is used. The surface facing the inside of the oral cavity (the surface facing the tooth tip side) can be made compact by the reduced volume. This makes it possible to provide an optimal floor spacing adjusting device for minimizing the thickness of the floor straightening device, providing a comfortable fit, and allowing the device to be used without adversely affecting the position of the tongue in the oral cavity.

Here, as described above, as a result of diligent studies by the present inventors, considering the position of the tongue in the oral cavity when the floor correction device is attached, the floor spacing is adjusted to the front side instead of the back side in the oral cavity. It was found that it is desirable to optimize the shape of the floor spacing adjustment device so that the device can be placed.

(7) The floor spacing adjusting device of the present invention provided based on such findings is a floor orthodontic device that is detachably attached to the oral cavity for orthodontics, and is arranged inside the dentition in the oral cavity. The purpose is to adjust the distance between the first floor member forming one of the plurality of floor members and the second floor member forming another one, and the first floor member is fixed to the first floor member. It has a fixing member, a second fixing member fixed to the second floor member, an interval adjusting mechanism capable of adjusting the interval between the first fixing member and the second fixing member, and the interval. The adjusting mechanism has an urging member that exerts an urging force in the direction in which the first fixing member and the second fixing member separate from each other, and a movable range in the direction in which the first fixing member and the second fixing member separate from each other. Of the outer surface of the first fixing member and the second fixing member, a side surface facing sideways and a bottom surface facing the dentition side when the floor orthodontic appliance is attached. It is characterized in that either one or both of the boundary portion and the boundary portion between the side surface and the top surface facing the tooth tip side has a chamfered shape.

Like the floor spacing adjusting device of the present invention, in the first fixing member and the second fixing member, the boundary portion between the side surface and the bottom surface facing sideways and the boundary portion between the side surface and the top surface are chamfered. , The width (length in the left-right direction) required for arranging the floor spacing adjusting device in the oral cavity can be suppressed. Thereby, it is possible to provide the floor spacing adjusting device whose shape is optimized so that the floor spacing adjusting device can be arranged on the front side instead of the back side in the oral cavity.

(8) In the floor spacing adjusting device of the present invention described above, the movable range regulating member has a connecting body provided over the first fixing member and the second fixing member, and a positioning member. The first fixing member has a first connecting body insertion portion through which the first end portion of the connecting body is slidably inserted in the axial direction, and the second fixing member is the connecting body of the connecting body. The second end portion has a second connecting body insertion portion that is slidably inserted in the axial direction, and the positioning member is first with respect to the first fixing member and the second fixing member. It is preferable that the connecting body inserted through the connecting body insertion portion and the second connecting body insertion portion is positioned stepwise or steplessly in the axial direction.

In the floor spacing adjusting device of the present invention, the distance between the first fixing member and the second fixing member is stepwise in the axial direction by positioning the connecting body with respect to the first fixing member and the second fixing member by the positioning member. Alternatively, it can be adjusted steplessly. Therefore, according to the floor spacing adjusting device of the present invention, it is possible to contribute to the provision of a floor straightening device that can be used by setting the spacing between the first floor member and the second floor member to the optimum state for orthodontics.

(9) The floor orthodontic apparatus of the present invention is detachably attached to the oral cavity for orthodontics, and includes a plurality of floor members arranged inside the dentition in the oral cavity and the plurality of floor members. It has a first floor member forming the floor member and a floor spacing adjusting device for adjusting the spacing between the second floor members, and the floor spacing adjusting device is the one according to the present invention described above. ..

According to such a configuration, it is possible to provide a floor orthodontic apparatus capable of exerting a force required for orthodontics on the dentition even more effectively.

According to the present invention, it is possible to provide a floor spacing adjusting device capable of exerting a force required for orthodontics on the dentition more effectively, and a floor orthodontic device provided with the same.

It is a photograph which shows the state which the floor orthodontic appliance which concerns on one Embodiment of this invention is attached to the dentition, (a) is the state which is attached to the upper jaw, (b) is the state which is attached to the lower jaw. It is a top view which shows the floor spacing adjustment apparatus which concerns on one Embodiment of this invention. It is a top view which shows the disassembled state of the floor straightening apparatus of FIG. FIG. 2 is a cross-sectional view taken along the line AA of the floor straightening device of FIG. It is a side view which shows the state which the 1st fixing member and the 2nd fixing member were seen from the inner side surface side. FIG. 3 is a cross-sectional view showing a state in which the first fixing member and the second fixing member, and the support member and the urging member in the floor straightening device of FIG. 2 are disassembled. FIG. 5 is a cross-sectional view showing a state in which the first fixing member and the second fixing member, and the connecting body and the positioning member in the floor straightening device of FIG. 2 are disassembled. It is a top view which shows the 1st state in the usage mode of a floor spacing adjustment apparatus. It is a top view which shows the 2nd state in the usage mode of a floor spacing adjustment apparatus. It is a top view which shows the 3rd state in the usage mode of a floor spacing adjustment apparatus. It is a top view which shows the 4th state in the usage mode of a floor spacing adjustment apparatus. It is a top view which shows the 5th state in the usage mode of a floor spacing adjustment apparatus. It is a top view which shows the sixth state in the usage mode of a floor spacing adjustment apparatus. It is a top view which shows the 7th state in the usage mode of a floor spacing adjustment apparatus. It is a top view which shows the 8th state in the usage mode of a floor spacing adjustment apparatus. It is a top view which shows the 9th state in the usage mode of a floor spacing adjustment apparatus. It is a top view which shows the state which installed the floor space adjustment device which concerns on a comparative example on the upper jaw. It is a top view which shows the state which installed the floor space adjustment device which concerns on embodiment of this invention on the upper jaw. It is a rear view which shows the state which installed the floor space adjustment device which concerns on a comparative example on the upper jaw. It is a rear view which shows the state which installed the floor space adjustment device which concerns on embodiment of this invention on the upper jaw. It is a photograph which shows the state which the floor correction device which concerns on a comparative example was attached to the lower jaw as seen from the top surface side. It is a photograph which shows the state which the floor correction apparatus which concerns on embodiment of this invention is attached to the lower jaw seen from the top surface side. It is a photograph which shows the state which the floor correction device which concerns on a comparative example was attached to the lower jaw seen from the front side. It is a photograph which shows the state which the floor correction apparatus which concerns on embodiment of this invention is attached to the lower jaw seen from the front side.

Hereinafter, the floor straightening device 10 according to the embodiment of the present invention and the floor spacing adjusting device 50 used therein will be described in detail with reference to the drawings. In the following description, first, the configurations of the floor straightening device 10 and the floor spacing adjusting device 50 will be described, and then the usage modes thereof will be described.

<About the configuration of the floor straightening device 10 and the floor spacing adjusting device 50>
The floor orthodontic appliance 10 is detachably attached to the oral cavity for orthodontics. The floor correction device 10 includes one used for the upper jaw as shown in FIG. 1 (a) and one used for the lower jaw as shown in FIG. 1 (b). The floor correction device 10 includes a floor member 20, a clasp 30, a floor spacing adjusting device 50, and the like for both the upper jaw and the lower jaw.

The floor member 20 is a member arranged inside the dentition in the oral cavity. The floor member 20 is formed of, for example, a resin such as a dental resin, a metal, or the like. The floor member 20 is composed of a plurality of parts. Specifically, in the example shown in FIG. 1, the floor member 20 is composed of two parts, a first floor member 22 and a second floor member 24.

The clasp 30 is provided to maintain the floor correction device 10 in a state of being attached to the dentition. The clasp 30 is fixed by being embedded in the floor member 20, and is formed so as to engage with the molars, canines, central incisors, lateral incisors, etc. forming the dentition.

The floor spacing adjusting device 50 is a device for adjusting the spacing between the first floor member 22 and the second floor member 24 constituting the floor member 20 described above. As shown in FIGS. 2 to 7, the floor spacing adjusting device 50 is composed of members such as a first fixing member 60, a second fixing member 70, and a spacing adjusting mechanism 80. The floor spacing adjusting device 50 is such that the spacing between the first fixing member 60 and the second fixing member 70, which are a pair of parts having substantially the same configuration, can be adjusted by the spacing adjusting mechanism 80. Almost all parts forming the floor spacing adjusting device 50 are made of metal.

As shown in FIG. 1, the first fixing member 60 is a member that is embedded and fixed to the first floor member 22. The first fixing member 60 is a metal member having a flat shape. As shown in FIGS. 1 to 7, the first fixing member 60 has a top surface 60a, a bottom surface 60b, an outer surface 60c, an inner side surface 60d, a front surface 60e, and a back surface 60f. The first fixing member 60 has a thickness corresponding to the distance between the top surface 60a and the bottom surface 60b, a width corresponding to the distance between the outer surface 60c and the inner side surface 60d, and a depth corresponding to the distance between the front surface 60e and the back surface 60f. The size of the first fixing member 60 can be appropriately set according to the size of the floor straightening device 10.

The first fixing member 60 is fixed to the first floor member 22 with the top surface 60a facing the tooth tip side and the bottom surface 60b facing the gum side when the floor correction device 10 is attached to the patient. Further, the first fixing member 60 has a posture in which the outer surface 60c faces the outside in the left-right direction (width direction) and the inner side surface 60d faces the inside in the left-right direction when the floor straightening device 10 is attached. It is fixed at 22. Further, the first fixing member 60 is fixed to the first floor member 22 with the front surface 60e facing the front side in the depth direction and the back surface 60f facing the back side in the mounted state of the floor straightening device 10.

The first fixing member 60 has a first connecting body insertion portion 62 and a first urging member insertion portion 64, 64. The first connecting body insertion portion 62 is a portion through which one end side (first end portion) of the connecting body 90 constituting the range of motion regulating member 86, which will be described in detail later, is slidable in the axial direction. Further, the first urging member insertion portion 64 is a portion through which one end side (first end portion) of the spring 88 and the support member 84 that function as the urging member in the interval adjusting mechanism 80 described in detail later is inserted. ..

The first connecting body insertion portion 62 and the first urging member insertion portions 64, 64 each open toward the inner side surface 60d of the first fixing member 60 and extend from the inner side surface 60d side toward the outer side surface 60c side. It is a hole formed like this. The first connecting body insertion portion 62 and the first urging member insertion portions 64 and 64 may each penetrate the outer surface 60c side, but both are non-penetrating to the outer surface 60c side. There is. The first connecting body insertion portion 62 has a substantially central portion in the depth direction (a substantially central portion between the front surface 60e and the back surface 60f) and a substantially central portion in the thickness direction (a substantially central portion between the top surface 60a and the bottom surface 60b). The opening is approximately circular, centered on the part). The first urging member insertion portions 64 and 64 are positioned adjacent to one side and the other side (front surface 60e side and back surface 60f) in the depth direction with respect to the first connection body insertion portion 62, respectively, in the thickness direction. The opening is approximately circular, centered at a position corresponding to approximately the center.

The first fixing member 60 has a chamfered portion at the ends of the top surface 60a, the bottom surface 60b, and the outer surface 60c. Specifically, the first fixing member 60 has chamfered portions 60g and 60h at a portion forming a boundary between the top surface 60a and the front surface 60e and a portion forming a boundary between the top surface 60a and the back surface 60f. Further, the first fixing member 60 has chamfered portions 60i and 60j at a portion forming a boundary between the bottom surface 60b and the front surface 60e and a portion forming a boundary between the bottom surface 60b and the back surface 60f. Further, the first fixing member 60 has chamfered portions 60k and 60l at a portion forming a boundary between the outer surface 60c and the top surface 60a and a portion forming a boundary between the outer surface 60c and the bottom surface 60b. The chamfered portions 60g, 60h, 60i, 60j are curved so as to follow the opening shapes of the first connecting body insertion portion 62 and the first urging member insertion portions 64, 64. As a result, the wall thickness of the first fixing member 60 is suppressed to the minimum.

Further, a communication hole 60m is provided on the top surface 60a of the first fixing member 60. The communication hole 60 m has an oval-shaped opening shape extending in the width direction along the first connecting body insertion portion 62. Further, the communication hole 60m communicates with the first connecting body insertion portion 62.

The second fixing member 70 is a member that is embedded and fixed to the second floor member 24. The second fixing member 70 has a shape symmetrical to that of the first fixing member 60 described above, and the configuration of each part is substantially the same as that of the first fixing member 60. Hereinafter, the configuration of the second fixing member 70 will be described while simplifying the description of the portion having the same configuration as the first fixing member 60.

The second fixing member 70 is a metal member having a flat shape like the first fixing member 60. The second fixing member 70 has a top surface 70a, a bottom surface 70b, an outer surface 70c, an inner side surface 70d, a front surface 70e, and a back surface 70f. The top surface 70a, the bottom surface 70b, the outer surface 70c, the inner side surface 70d, the front surface 70e, and the back surface 70f have the first fixing member 60 as the top surface 60a, the bottom surface 60b, the outer surface 60c, the inner surface 60d, the front surface 60e, and It has the same configuration as the back surface 60f. Further, the size (thickness, width, depth) of the second fixing member 70 is substantially the same as that of the first fixing member 60.

Similar to the first fixing member 60, the second fixing member 70 has a top surface 70a on the tooth tip side, a bottom surface 70b on the gum side, and an outer surface 70c in the left-right direction (width direction) when the patient wears the floor correction device 10. ), The inner side surface 70d is oriented toward the inside in the left-right direction, the front surface 70e is oriented toward the front side in the depth direction, and the back surface 70f is oriented toward the back side, and is fixed to the second floor member 24. The second fixing member 70 is arranged so that the inner side surface 70d and the inner side surface 60d of the first fixing member 60 are substantially facing each other.

The second fixing member 70 has a second connecting body insertion portion 72 and a second urging member insertion portion 74, 74. The second connecting body insertion portion 72 and the second urging member insertion portions 74 and 74 correspond to the first connecting body insertion portion 62 and the first urging member insertion portions 64 and 64 of the first fixing member 60 described above. Is what you do. The second connecting body insertion portion 72 is a portion through which the other end side (second end portion) of the connecting body 90 constituting the range of motion regulating member 86, which will be described in detail later, is slidable in the axial direction. Further, the second urging member insertion portion 74 is a portion through which one end side (second end portion) of the spring 88 and the support member 84 that function as the urging member in the interval adjusting mechanism 80 described in detail later is inserted. ..

The second connecting body insertion portion 72 and the second urging member insertion portions 74 and 74 are the same as the first connecting body insertion portion 62 and the first urging member insertion portions 64 and 64 in the first fixing member 60 described above. The position and composition of. That is, the second connecting body insertion portion 72 and the second urging member insertion portions 74 and 74 are opened toward the inner side surface 70d of the second fixing member 70, respectively, and are directed from the inner side surface 70d side to the outer side surface 70c side. It is said to be a hole formed so as to extend.

Like the first fixing member 60, the second fixing member 70 has a chamfered portion at the ends of the top surface 70a, the bottom surface 70b, and the outer surface 70c. Specifically, the second fixing member 70 includes a portion forming a boundary between the top surface 70a and the front surface 70e, a portion forming a boundary between the top surface 70a and the back surface 70f, and a portion forming a boundary between the bottom surface 70b and the front surface 70e. The chamfered portions 70g, 70h, 70i, It has 70j, 70k, and 70l. The chamfered portions 70g, 70h, 70i, and 70j are curved so as to follow the opening shapes of the second connecting body insertion portion 72 and the second urging member insertion portion 74, 74. As a result, the wall thickness of the second fixing member 70 is suppressed to the minimum.

Further, a communication hole 70m is provided on the top surface 70a of the second fixing member 70. The communication hole 70 m has an oval opening shape extending in the width direction along the first connecting body insertion portion 62. ing. Further, the communication hole 70 m communicates with the second connecting body insertion portion 72.

The interval adjusting mechanism 80 is a mechanism for adjusting the interval between the first fixing member 60 and the second fixing member 70. The interval adjusting mechanism 80 includes an urging member 82, a support member 84, a range of motion regulating member 86, and the like.

The urging member 82 is for exerting an urging force in the direction in which the first fixing member 60 and the second fixing member 70 separate from each other. The urging member 82 may be any one as long as it can exert urging force, but for example, as in the present embodiment, a spring 88 (coil spring) may be used. In this embodiment, two urging members 82 are used. That is, one end (first end) of the urging member 82 is inserted into the first urging member insertion portions 64, 64 of the first fixing member 60, and the second urging member of the second fixing member 70 is inserted. The other end (second end) is inserted through the insertion portions 74, 74. Therefore, the urging member 82 can exert an urging force in the direction in which the first fixing member 60 and the second fixing member 70 are separated from each other. Further, the urging member 82 can be replaced as appropriate. Therefore, for example, the urging member 82 can be replaced with a member having a long natural length as appropriate according to the expansion of the distance between the first fixing member 60 and the second fixing member 70.

The support member 84 is a member for supporting the urging member 82 (spring 88) in a state of being inserted through the first urging member insertion portions 64, 64 and the second urging member insertion portions 74, 74. The support member 84 can be, for example, a tubular body or a shaft body into which the spring 88 can be inserted or extrapolated. In the present embodiment, as the support member 84, a tubular body into which the spring 88 can be inserted is adopted. The support member 84 is inserted into the first urging member insertion portions 64, 64 and the second urging member insertion portions 74, 74 together with the spring 88 with the spring 88 inserted. Like the urging member 82, the support member 84 can be replaced as appropriate. Therefore, for example, it can be replaced with a longer one according to the length of the urging member 82 according to the expansion of the distance between the first fixing member 60 and the second fixing member 70.

The range of motion regulating member 86 is for regulating the range of motion in the direction in which the first fixing member 60 and the second fixing member 70 are separated from each other. The range of motion regulating member 86 includes a connecting body 90, a positioning member 92, and the like.

The connecting body 90 is a long member provided over the first fixing member 60 and the second fixing member 70. The connector 90 may have any shape such as a square bar shape or a plate shape, but in the present embodiment, a round bar shape is used. One end side of the connecting body 90 is inserted through the first connecting body insertion portion 62 provided in the first fixing member 60, and the other end side is inserted through the second connecting body inserting portion 72 of the second fixing member 70. .. Therefore, by sliding the first fixing member 60 and the second fixing member 70 along the connecting body 90, the distance between the first fixing member 60 and the second fixing member 70 can be appropriately adjusted.

The connecting body 90 is provided with a plurality of positioning member mounting portions 94. The positioning member mounting portion 94 is a portion on which the positioning member 92 is mounted. In the present embodiment, the positioning member mounting portion 94 is composed of holes. A plurality of positioning member mounting portions 94 are provided on the left and right sides at predetermined intervals with a substantially central portion in the axial direction of the connecting body 90 as a boundary. In the present embodiment, the connecting body 90 is provided so that the distance between the centers of the adjacent holes is approximately 2 mm, three on each side of the connecting body 90 with the substantially central portion in the axial direction as a boundary. The connecting body 90 is in a posture in which the positioning member mounting portion 94 can be seen from the oval communication holes 60m and 70m provided on the top surfaces 60a and 70a of the first fixing member 60 and the second fixing member 70. It is inserted into the connecting body insertion portion 62 and the second connecting body insertion portion 72.

The positioning member 92 positions the connecting body 90 inserted through the first connecting body insertion portion 62 and the second connecting body inserting portion 72 with respect to the first fixing member 60 and the second fixing member 70 in the axial direction. belongs to. The positioning member 92 can fix the connecting body 90 stepwise or steplessly to the first fixing member 60 and the second fixing member 70, but in the present embodiment, it can be fixed stepwise. It is supposed to be. Specifically, the positioning member 92 can be a pin, a screw, a bolt, or the like that can be engaged with a hole forming the positioning member mounting portion 94 provided in the connecting body 90. In the present embodiment, the positioning member 92 is composed of screws.

The range of motion regulating member 86 inserts the positioning member 92 through the communication holes 60m and 70m of the first fixing member 60 and the second fixing member 70, and inserts the positioning member 92 into the positioning member mounting portion 94 of the connecting body 90. By engaging, the range of motion in the direction in which the first fixing member 60 and the second fixing member 70 separate from each other can be regulated. The size of the range of motion can be adjusted in multiple stages depending on which of the positioning member mounting portions 94 provided on the connecting body 90 is mounted with the positioning member 92.

Here, in the floor spacing adjusting device 50, as described above, the urging member 82 (spring 88) is urged in a direction in which the spacing between the first fixing member 60 and the second fixing member 70 increases. Therefore, the floor spacing adjusting device 50 can define the spacing between the first fixing member 60 and the second fixing member 70 by limiting the range of motion by the range of motion regulating member 86.

<About the usage mode of the floor straightening device 10 and the floor spacing adjusting device 50>
Subsequently, the usage mode of the floor straightening device 10 and the floor spacing adjusting device 50 will be described. In the floor straightening device 10, the first floor member 22 and the second floor member 24 are in contact with the dentition from the inside while adjusting the distance between the first floor member 22 and the second floor member 24 by the floor spacing adjusting device 50. It is used by fitting it into the oral cavity so that it comes into contact with it.

Here, as described above, the spacing adjustment between the first floor member 22 and the second floor member 24 in the floor spacing adjusting device 50 can be performed by using the range of motion regulating member 86. Specifically, the floor spacing adjusting device 50 engages the positioning member 92 with the positioning member mounting portion 94 provided at any of the plurality of positioning member mounting portions 94 provided on the connecting body 90. The distance between the first floor member 22 and the second floor member 24 can be adjusted depending on whether they are combined. Therefore, when using the floor straightening device 10 and the floor spacing adjusting device 50, the position of the positioning member mounting portion 94 with which the positioning member 92 is engaged is changed according to the progress of orthodontics, and the first floor member 22 is used. And the interval between the second floor members 24 is gradually expanded.

When the distance between the first floor member 22 and the second floor member 24 is changed to a predetermined value or more, the urging member 82 (spring 88) and the support member 84 forming the distance adjusting mechanism 80 are replaced with longer ones. .. In the present embodiment, the urging member 82 is a spring 88 having a short natural length (hereinafter, also referred to as “short spring 88a”), and a spring 88 having a natural length longer than that of the short spring 88a (hereinafter, also referred to as “long spring 88b”). Is used properly. Further, similarly to the short spring 88a and the long spring 88b, the support member 84 is also referred to as a short length member (hereinafter, also referred to as “short support member 84a”) and a long support member 84 (hereinafter, also referred to as “long support member 84b”). ) Is used properly. By doing so, even when the distance between the first floor member 22 and the second floor member 24 is expanded, a large external force is obtained as in the case where the distance between the first floor member 22 and the second floor member 24 is small. Can act on the dentition.

Hereinafter, the usage mode of the floor straightening device 10 and the floor spacing adjusting device 50 will be described for each stage of spacing expansion of the first floor member 22 and the second floor member 24. In the following description, among the six positioning member mounting portions 94 formed on the connecting body 90, the positioning member mounting portions 94a, 94b, 94c, 94d are arranged in order from the one closest to the first fixing member 60 side. , 94e, 94f may be described separately. Further, in FIGS. 8 to 16 used in the following description, only the floor spacing adjusting device 50 is shown, and other members (floor member 20, clasp 30, etc.) forming the floor straightening device 10 are not shown and omitted. ..

First, as shown in FIG. 8, at the stage of creating the floor straightening device 10, the short support member 84a and the short spring 88a are incorporated as the supporting member 84 and the spring 88 as the constituent members of the floor spacing adjusting device 50. To. Further, at this stage, the positioning member 92 is inserted from the communication hole 60m provided in the top surface 60a of the first fixing member 60 and mounted on the positioning member mounting portion 94c of the connecting body 90. Further, the positioning member 92 is also inserted from the communication hole 70m provided in the top surface 70a of the second fixing member 70, and is mounted on the positioning member mounting portions 94d and 94e of the connecting body 90. As a result, the distance between the first fixing member 60 and the second fixing member 70 (the distance between the first floor member 22 and the second floor member 24) is set to the minimum value (for example, approximately 1 mm).

When the orthodontic treatment by the floor orthodontic device 10 is started, the positioning member 92 mounted on the positioning member mounting portion 94d is removed from the state shown in FIG. 8, and the state shown in FIG. 9 is obtained. As a result, the distance between the first fixing member 60 and the second fixing member 70 is the distance between the centers of the positioning member mounting portions 94d and 94e from the minimum value position, and the first fixing member 60 is urged by the short spring 88a. And the expandable range (range of motion) of the second fixing member 70 is expanded. In the example shown in FIG. 9, the distance between the first fixing member 60 and the second fixing member 70 can be expanded to about 3 mm. Therefore, when the floor orthodontic device 10 is installed in the oral cavity for orthodontics in this state, the teeth in contact with the first floor member 22 and the second floor member 24 due to the influence of the urging force generated by the short spring 88a. An external force can be applied to the row in the direction of widening the space between the teeth.

When the floor straightening device 10 is continuously attached in the state of FIG. 9, as shown in FIG. 10, the first fixing member 60 and the second fixing member are eventually attached even when the floor straightening device 10 is attached to the oral cavity. The interval of 70 is expanded to about 3 mm. In such a state, the external force acting on the dentition in contact with the first floor member 22 and the second floor member 24 is weakened, and the orthodontic function is deteriorated. Therefore, in such a state, the positioning member 92 mounted on the positioning member mounting portion 94c is replaced with the positioning member mounting portion 94b. As a result, the state shown in FIG. 11 is obtained. By setting the state of FIG. 11, as compared with the state of FIG. 10, the first fixing member 60 and the second fixing member 70 are subjected to the urging force of the short spring 88a by the distance between the centers of the positioning member mounting portions 94b and 94c. Expandable range (range of motion). In the example shown in FIG. 11, the distance between the first fixing member 60 and the second fixing member 70 can be expanded to about 5 mm. Therefore, in this state, by installing the floor orthodontic device 10 in the oral cavity for orthodontics, the direction in which the interdental space is further widened with respect to the dentition in contact with the first floor member 22 and the second floor member 24. Can exert an external force on the floor.

When the floor straightening device 10 is continuously attached in the state of FIG. 11, as shown in FIG. 12, the first fixing member 60 and the second fixing member are eventually attached even when the floor straightening device 10 is attached to the oral cavity. The interval of 70 is expanded to about 5 mm. In such a state, the external force acting on the dentition in contact with the first floor member 22 and the second floor member 24 is weakened, and the orthodontic function is deteriorated. Further, in the state of FIG. 12, the short spring 88a is in a state of being extended to a state close to the natural length. Therefore, for example, even if the positioning member 92 mounted on the positioning member mounting portion 94e is replaced with the positioning member mounting portion 94f, the urging force due to the short spring 88a is small and the external force is sufficiently large with respect to the dentition. Cannot work. Further, the amount of the short spring 88a protruding outward in the axial direction is larger than that of the short support member 84a, which may cause rattling or the like.

Therefore, when the floor spacing adjusting device 50 is in the state as shown in FIG. 12, as shown in FIG. 13, the short spring 88a and the short support member 84a are replaced with the long spring 88b and the long support member 84b. Further, the positioning member 92 mounted on the positioning member mounting portion 94e is replaced with the positioning member mounting portion 94f. As a result, as compared with the state of FIG. 12, the range (movable) of the first fixing member 60 and the second fixing member 70 can be expanded by the urging force of the long spring 88b by the distance between the centers of the positioning member mounting portions 94e and 94f. Area) expands. In the example shown in FIG. 13, the distance between the first fixing member 60 and the second fixing member 70 can be expanded to about 7 mm. Therefore, in this state, by installing the floor orthodontic device 10 in the oral cavity for orthodontics, the direction in which the interdental space is further widened with respect to the dentition in contact with the first floor member 22 and the second floor member 24. Can exert an external force on the floor.

When the floor correction device 10 is continuously attached in the state of FIG. 13, the first fixing member 60 and the second fixing member are eventually attached even when the floor correction device 10 is attached to the oral cavity as shown in FIG. The interval of 70 is expanded to about 7 mm. In such a state, the external force acting on the dentition in contact with the first floor member 22 and the second floor member 24 is weakened, and the orthodontic function is deteriorated. Therefore, in such a state, the positioning member 92 mounted on the positioning member mounting portion 94b is replaced with the positioning member mounting portion 94a. As a result, the state shown in FIG. 15 is obtained. By setting the state of FIG. 15, as compared with the state of FIG. 14, the first fixing member 60 and the second fixing member 70 are subjected to the urging force of the long spring 88b by the distance between the centers of the positioning member mounting portions 94a and 94b. Expandable range (range of motion). In the example shown in FIG. 15, the distance between the first fixing member 60 and the second fixing member 70 can be expanded to about 9 mm. Therefore, in this state, by installing the floor orthodontic device 10 in the oral cavity for orthodontics, the direction in which the interdental space is further widened with respect to the dentition in contact with the first floor member 22 and the second floor member 24. Can exert an external force on the floor.

When the floor straightening device 10 is continuously attached in the state of FIG. 15, the first fixing member 60 and the second fixing member are eventually attached even when the floor straightening device 10 is attached to the oral cavity as shown in FIG. The interval of 70 is expanded to about 9 mm. In such a state, the dentition is corrected, and the orthodontic treatment is completed and the condition is good.

As described above, in the floor spacing adjusting device 50 of the present embodiment, the spring 88 can be changed to a long natural length according to the expansion of the spacing between the first fixing member 60 and the second fixing member 70. There is. Therefore, in the floor spacing adjusting device 50 of the present embodiment, even when the spacing between the first fixing member 60 and the second fixing member 70 is widened, a large urging force is applied to the first floor member as when the spacing between the first fixing member 60 and the second fixing member 70 is narrow. It can act on the dentition via the 22 and the second floor member 24. Therefore, according to the floor spacing adjusting device 50 of the present embodiment and the floor orthodontic device 10 using the same, the force required for orthodontics is applied to the dentition even more effectively, and the effect of orthodontics is enhanced. It can be further improved.

As described above, in the floor spacing adjusting device 50 of the present embodiment, of the outer surfaces of the first fixing member 60 and the second fixing member 70, the bottom surfaces 60b and 70b facing the gum side when the floor correction device 10 is attached. The end of the top surface 60a, 70a facing the tooth tip side, the boundary between the outer surface 60c, 70c and the bottom surface 60b, 70b facing sideways, and the outer surface 60c, 70c and the top surface 60a, 70a. The boundary between the two and the surface is chamfered. With such a configuration, the floor orthodontic appliance 10 can fully exhibit the orthodontic function.

Specifically, in the floor spacing adjusting device 50, by forming the ends of the bottom surfaces 60b and 70b of the floor orthodontic device 10 into a chamfered shape, the floor orthodontic device 10 is placed on the gum side (bundle bone side) as much as possible in the oral cavity. ) Can be placed. This makes it possible to apply force on the gum side (alveolar bone side), and high orthodontic ability can be expected. Further, since the floor spacing adjusting device 50 has a chamfered shape at the ends of the top surfaces 60a and 70a, the floor member 20 can be made as thin as possible. Further, the floor spacing adjusting device 50 has a chamfered shape at the boundary between the outer surfaces 60c and 70c and the bottom surfaces 60b and 70b and the boundary between the outer surfaces 60c and 70c and the top surfaces 60a and 70a. As a result, the width (length in the left-right direction) required for arranging the floor spacing adjusting device 50 in the oral cavity can be suppressed, and the floor spacing adjusting device 50 can be arranged on the front side instead of the back side in the oral cavity.

In the present embodiment, the ends of the bottom surfaces 60b and 70b, the ends of the top surfaces 60a and 70a, the boundary between the outer surfaces 60c and 70c and the bottom surfaces 60b and 70b, and the outer surfaces 60c and 70c and the top surface 60a Although an example in which the chamfered shape is formed at all the boundaries with the and 70a is shown, the present invention is not limited to this. For example, the floor spacing adjusting device 50 may not have a chamfered shape in part or all of the chamfered portion in the present embodiment. Further, the chamfered shape shown in the present embodiment is a so-called R-processed shape, but the present invention is not limited to this, and even if the chamfered shape is a so-called C-chamfered shape. good.

Further, in the present embodiment, the chamfered portion described above is curved so as to follow the opening shapes of the first urging member insertion portion 64 and the second urging member insertion portion 74. .. With such a configuration, the wall thickness of the first fixing member 60 and the second fixing member 70 can be minimized in the portion where the chamfered shape is formed, and the floor spacing adjusting device 50 can be made compact. Can be done. The present invention is not limited to this, and for example, the shape of the chamfered portion is completely different from the opening shape of the first urging member insertion portion 64 and the second urging member insertion portion 74. It may be different.

Further, the floor spacing adjusting device 50 of the present embodiment described above includes a support member 84 that supports the spring 88, and the support member 84 is composed of a tubular body into which the spring 88 can be inserted. Further, the support member 84 can be inserted into the first urging member insertion portion 64 and the second urging member insertion portion 74 together with the spring 88. Further, the length of the support member 84 can be changed by changing from the short support member 84a to the long support member 84b according to the expansion of the distance between the first fixing member 60 and the second fixing member 70. It is supposed to be. By making the length of the support member 84 changeable in this way, the floor spacing adjusting device does not rattle the spring 88 or the like even when the spacing between the first fixing member 60 and the second fixing member 70 is expanded. 50 and the floor straightening device 10 can be provided.

Although the present embodiment shows an example in which the support member 84 is formed by a tubular body into which the spring 88 can be inserted, the present invention is not limited to this. Specifically, the support member 84 may be, for example, a tubular body or a shaft body to which the spring 88 can be extrapolated. Further, in the present embodiment, as the support member 84, two types of lengths, a short support member 84a and a long support member 84b, are prepared and can be replaced as appropriate, so that the length of the support member 84 can be changed stepwise. However, the present invention is not limited to this. For example, as the support member 84, a plurality of members having different lengths may be provided so that the length of the support member 84 can be changed in more steps, or the length of the support member 84 can be changed steplessly. You may.

Further, the floor spacing adjusting device 50 of the present embodiment described above includes a range of motion regulating member 86, and the spacing between the first fixing member 60 and the second fixing member 70 can be adjusted stepwise. Therefore, according to the floor spacing adjusting device 50 of the present embodiment, it is possible to contribute to the provision of the floor straightening device 10 that can be used by setting the spacing between the first floor member 22 and the second floor member 24 to the optimum state for orthodontics. In the present embodiment, an example is shown in which the distance between the first fixing member 60 and the second fixing member 70 can be adjusted stepwise by the range of motion regulating member 86, but the present invention is limited thereto. Instead, the first fixing member 60 and the second fixing member 70 may be adjustable steplessly.

Hereinafter, an embodiment of the floor spacing adjusting device 50 described above and a floor spacing adjusting device 100 according to a comparative example will be described. The floor spacing adjusting device 100 according to the comparative example has almost the same configuration as the floor spacing adjusting device 50 described above, but the chamfered portions 60g, 60h, 60i, 60j, 60k, 60l of the first fixing member 60, It is different in that it does not have 60 m or the chamfered portion 70 g, 70 h, 70i, 70 j, 70 k, 70 l, 70 m of the second fixing member 70, and has an angular shape. In the following description, in the floor spacing straightening device 100, the one corresponding to the first fixing member 60 of the floor spacing straightening device 50 is the first fixing member 160, and the one corresponding to the second fixing member 70 is the second fixing member 170. It is called.

17 and 19 show a state in which the floor correction device 100 according to the comparative example is attached to the upper jaw as viewed from the top surface side and the back side, respectively, and FIGS. 21 and 23 show the floor correction device 100 according to the comparative example, respectively. It is a photograph which shows the state which was attached to the lower jaw as seen from the top surface side and the front side. On the other hand, FIGS. 18 and 20 show a state in which the floor straightening device 50 of the above embodiment is attached to the upper jaw as viewed from the top surface side and the back surface side, respectively, and FIGS. 22 and 24 show the floor straightening device of the above embodiment, respectively. It is a photograph which shows the state which attached 50 to the lower jaw as seen from the top surface side and the front surface side.

First, as shown in FIGS. 17 and 19, the case where the floor correction devices 50 and 100 are arranged on the upper jaw will be examined. As can be seen by comparing FIGS. 19 and 20, the floor orthodontic appliance 100 according to the comparative example has a square shape of the first fixing member 160 and the second fixing member 170, and therefore is intended to be arranged in the oral cavity. If so, it cannot be placed close to the inner wall of the oral cavity. That is, when the floor correction device 100 is arranged horizontally as shown in FIG. 19, a large gap is formed between the surface (mucosa) of the oral cavity inner wall and the floor correction device 100. Therefore, when the floor straightening device 100 is used, the thickness of the floor straightening device must be increased.

On the other hand, as shown in FIG. 20, when the floor straightening device 50 according to the above embodiment is used, each part of the first fixing member 60 and the second fixing member 70 is chamfered. Therefore, the floor correction device 50 can be arranged at a position close to the inner wall of the oral cavity. That is, even if the floor correction device 100 is arranged horizontally as shown in FIG. 20, the gap formed between the surface (mucous membrane) of the oral cavity inner wall and the floor correction device 50 can be minimized. Therefore, when the floor straightening device 50 is used, the floor straightening device can be made thinner than when the floor straightening device 100 is used.

Next, as shown in FIGS. 21 and 22, a case where the floor correction devices 50 and 100 are arranged on the lower jaw will be examined. The difference between the floor correction devices 50 and 100 described above was the same result when placed on the lower jaw as when placed on the upper jaw. Specifically, as shown in FIG. 23, when the floor straightening device 100 according to the comparative example is used for the lower jaw, the first fixing member 160 and the second fixing member 170 have an angular shape. Therefore, it cannot be placed in a position close to the inner wall of the oral cavity. As a result, a large gap is formed between the surface (mucosa) of the inner wall of the oral cavity and the floor correction device 100, and the thickness of the floor correction device must be increased by that amount.

On the other hand, as shown in FIG. 24, since each part of the first fixing member 60 and the second fixing member 70 is chamfered, the floor correction device 50 can be arranged at a position close to the inner wall of the oral cavity. , The gap formed between the surface (mucosa) of the inner wall of the oral cavity and the floor correction device 50 can be minimized. Therefore, when the floor straightening device 50 is used, even when it is used for the lower jaw, the floor straightening device can be made thinner than when the floor straightening device 100 is used.

The floor correction device and the floor spacing adjustment device of the present invention can be suitably used in all the devices used for orthodontics.

10: Floor straightening device 20: Floor member 22: First floor member 24: Second floor member 50: Floor spacing adjusting device 60: First fixing member 60a: Top surface 60b: Bottom surface 60c: Outer surface 62: First connecting body Insertion part 64: First urging member insertion part 70: Second fixing member 70a: Top surface 70b: Bottom surface 70c: Outer surface 72: Second connecting body insertion part 74: Second urging member insertion part 80: Spacing adjustment mechanism 82: Biasing member 84: Support member 86: Movable range regulating member 88: Spring 90: Connecting body 92: Positioning member

Claims (9)

1. In a floor orthodontic appliance that is detachably attached to the oral cavity for orthodontics, the first floor member that forms one of a plurality of floor members arranged inside the dentition in the oral cavity, and the other one. A floor spacing adjustment device for adjusting the spacing between the second floor members.
   The first fixing member fixed to the first floor member and
   The second fixing member fixed to the second floor member and
   It has an interval adjusting mechanism that makes it possible to adjust the interval between the first fixing member and the second fixing member.
   The interval adjustment mechanism
   An urging member that exerts an urging force in a direction in which the first fixing member and the second fixing member separate from each other.
   It has a range of motion regulating member that regulates a range of motion in a direction in which the first fixing member and the second fixing member separate from each other.
   The interval adjustment mechanism
   It has a spring that forms the urging member,
   The first fixing member
   It has a first urging member insertion portion through which the first end of the spring is inserted.
   The second fixing member
   It has a second urging member insertion portion through which the second end of the spring is inserted.
   A floor spacing adjusting device, characterized in that the spring can be changed to one having a long natural length according to the expansion of the spacing between the first fixing member and the second fixing member.
2. Of the outer surfaces of the first fixing member and the second fixing member, the end of the bottom surface facing the gum side, the end of the top surface facing the tooth tip side, and the side surface facing the side when the floor correction device is attached. The floor spacing adjusting device according to claim 1, wherein at least one of the boundary portion between the bottom surface and the bottom surface and the boundary portion between the side surface and the top surface has a chamfered shape.
3. It has a support member that supports the spring.
   The support member
   A tubular body or a shaft body capable of interpolating or extrapolating the spring is provided, and the spring can be inserted into the first urging member insertion portion and the second urging member insertion portion together with the spring.
   The floor spacing according to claim 1 or 2, wherein the length of the support member can be extended stepwise or continuously according to the expansion of the spacing between the first fixing member and the second fixing member. Adjustment device.
4. The floor spacing adjusting device according to claim 2, wherein the chamfered shape has a shape that conforms to the opening shapes of the first urging member insertion portion and the second urging member insertion portion.
5. In a floor orthodontic appliance that is detachably attached to the oral cavity for orthodontics, the first floor member that forms one of a plurality of floor members arranged inside the dentition in the oral cavity, and the other one. A floor spacing adjustment device for adjusting the spacing between the second floor members.
   The first fixing member fixed to the first floor member and
   The second fixing member fixed to the second floor member and
   It has an interval adjusting mechanism that makes it possible to adjust the interval between the first fixing member and the second fixing member.
   The interval adjustment mechanism
   An urging member that exerts an urging force in a direction in which the first fixing member and the second fixing member separate from each other.
   It has a range of motion regulating member that regulates a range of motion in a direction in which the first fixing member and the second fixing member separate from each other.
   A floor spacing adjusting device characterized in that, of the outer surfaces of the first fixing member and the second fixing member, the end portion of the bottom surface facing the gum side in the mounted state of the floor straightening device has a chamfered shape.
6. In a floor orthodontic appliance that is detachably attached to the oral cavity for orthodontics, the first floor member that forms one of a plurality of floor members arranged inside the dentition in the oral cavity, and the other one. A floor spacing adjustment device for adjusting the spacing between the second floor members.
   The first fixing member fixed to the first floor member and
   The second fixing member fixed to the second floor member and
   It has an interval adjusting mechanism that makes it possible to adjust the interval between the first fixing member and the second fixing member.
   The interval adjustment mechanism
   An urging member that exerts an urging force in a direction in which the first fixing member and the second fixing member separate from each other.
   It has a range of motion regulating member that regulates a range of motion in a direction in which the first fixing member and the second fixing member separate from each other.
   Of the outer surfaces of the first fixing member and the second fixing member, the floor spacing adjustment is characterized in that the end of the top surface facing the tooth tip side in the mounted state of the floor straightening device has a chamfered shape. Device.
7. In a floor orthodontic appliance that is detachably attached to the oral cavity for orthodontics, the first floor member that forms one of a plurality of floor members arranged inside the dentition in the oral cavity, and the other one. A floor spacing adjustment device for adjusting the spacing between the second floor members.
   The first fixing member fixed to the first floor member and
   The second fixing member fixed to the second floor member and
   It has an interval adjusting mechanism that makes it possible to adjust the interval between the first fixing member and the second fixing member.
   The interval adjustment mechanism
   An urging member that exerts an urging force in a direction in which the first fixing member and the second fixing member separate from each other.
   It has a range of motion regulating member that regulates a range of motion in a direction in which the first fixing member and the second fixing member separate from each other.
   Of the outer surfaces of the first fixing member and the second fixing member, at the boundary between the side surface facing sideways and the bottom surface facing the gum side when the floor orthodontic appliance is attached, and on the side surface and the tooth tip side. A floor spacing adjusting device characterized in that one or both of the boundaries with the facing top surface are chamfered.
8. The range of motion regulating member
   With the first fixing member and the connecting body provided over the second fixing member,
   It has a positioning member and
   The first fixing member
   The first end of the connector has a first connector insertion portion that is slidably inserted in the axial direction.
   The second fixing member
   The second end of the coupling has a second coupling insertion portion that is slidably inserted in the axial direction.
   The positioning member inserts the first fixing member and the second fixing member into the first connecting body insertion portion and the second connecting body insertion portion, and the connecting body is stepwise or absent in the axial direction. The floor spacing adjusting device according to any one of claims 1 to 7, wherein the floor spacing is positioned in stages.
9. A floor orthodontic appliance that can be detachably attached to the oral cavity for orthodontics.
   Multiple floor members arranged inside the dentition in the oral cavity,
   It has a first floor member forming the plurality of floor members and a floor spacing adjusting device for adjusting the spacing between the second floor members.
   A floor straightening device according to any one of claims 1 to 8, wherein the floor spacing adjusting device is the one according to any one of claims 1 to 8.

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