TW201617042A - Prosthodontic device with detachable suprastructure and related screw - Google Patents

Abstract

A detachable prosthodontic device and related screw are disclosed. The detachable prosthodontic device includes an abutment, a suprastructure, and a screw. The abutment includes an abutment collar and a hollow chamber, and a screw hold is arranged on an abutment wall of the hollow chamber. The suprastructure is provided with a receiving region and an inner surface surrounding the receiving region. The screw includes a screw head and a screw rod. The screw head includes a contact member and a guiding member, and the guiding member is positioned between the contact member and the screw rod. When the screw is arranged in the screw hold, a portion of the screw head protrudes outward from an outer surface of the hollow chamber. When the suprastructure is sleeved onto the abutment, partial area of the outer surface of the hollow chamber contacts with partial area of the inner surface of the suprastructure, and the screw head supports an opposing side of the inner surface to apply a force onto the inner surface to thereby engage the suprastructure with the abutment.

Description

Upper structure detachable denture device and associated screws 【0001】

The present invention relates to a prosthodontic device, and more particularly to an upper structure detachable denture device and associated screws.

【0002】

In order to pursue aesthetics or improve oral hygiene, many people choose to repair missing teeth by implanting them. Conventional dental implant methods use an adhesive to fill the gap between the suprastructure and the abutment so that the superstructure is fixed to the support by an adhesive.

[0003]

However, once the adhesive is cured, it is difficult to remove the superstructure from the support, which causes the periodontal disease to be easily caused by the difficulty in thorough cleaning, thereby shortening the service life of the denture. If the force is forced to remove the upper structure from the support, it is likely to cause damage to the structure or appearance of the upper structure or damage to the structure of the support.

[0004]

In view of this, how to provide a denture device that can easily remove the upper structure from the support when needed is a problem to be solved in the industry.

[0005]

The present specification provides an embodiment of a detachable denture device comprising: a seat for attaching a dental implant, and including a seat joint and a hollow body, wherein the hollow body has an opening And an outer surface, and the wall of the cavity of the hollow body has a screw hole; an upper structure, an accommodating area and an inner side surrounding the accommodating area; and a screw comprising a screw head and a screw The screw head includes a contact portion and a guiding portion, the screw is provided with a thread, the contact portion has a top surface, the guiding portion is located between the contact portion and the screw, and when the screw is disposed on the screw a portion of the screw head protruding outwardly from the outer surface of the hollow cavity, but the screw does not penetrate the upper structure; wherein the hollow body is when the upper structure covers the support a partial area of the outer surface is in contact with a partial area of the inner side of the upper structure, and the screw head will abut the opposite side of the inner side to apply a positive force to the inner side, thereby Make the upper structure detachable Engaging manner on the holder.

[0006]

The present specification further provides an embodiment of a screw for use in a detachable denture device. The detachable denture device includes a seat and an upper structure for connecting a dental implant, and includes a seat joint and a hollow body, the hollow body having an opening and an outer surface And the wall of the cavity of the hollow body has a screw hole, and the upper structure is provided with an accommodating area and an inner side surrounding the accommodating area. The screw comprises: a screw head including a contact portion and a guiding portion; and a screw provided with a thread thereon; wherein the contact portion has a top surface, the guiding portion is located at the contact portion and the screw And when the screw is disposed in the screw hole, a portion of the screw head protrudes outward from the outer surface of the hollow cavity, but the screw does not penetrate the upper structure; wherein, when the upper structure sleeve When the holder is seated, a partial area of the outer surface of the hollow body is in contact with a partial area of the inner side of the upper structure, and the screw head will abut the opposite side of the inner side to apply a positive The force is applied to the inner side surface, whereby the upper structure is removably snapped onto the support.

【0007】

One of the advantages of the above embodiment is that when the upper structure is wrapped around the support, the upper structure can be easily removably engaged with the support by the positive force exerted by the screw head on the inner side of the upper structure. on.

[0008]

Another advantage of the above embodiment is that it is only necessary to apply an appropriate force to the upper structure to separate the upper structure from the support without damaging the structure or appearance of the upper structure and the support, which is very helpful. Performing cleaning and disinfecting operations around the denture device also facilitates repair or replacement of the upper structure.

【0009】

Other advantages of the invention will be explained in more detail by the following description and drawings.

[0058]

100‧‧‧Removable denture device

[0059]

102‧‧‧ alveolar bone

[0060]

104‧‧‧ Dental implants

[0061]

106‧‧‧ teeth

[0062]

110‧‧‧Support

[0063]

111‧‧‧Support joint

[0064]

112‧‧‧ hollow body

[0065]

113‧‧‧Opening

[0066]

114‧‧‧ outer surface

[0067]

115‧‧‧Support wall

[0068]

120‧‧‧Upper structure

[0069]

121‧‧‧Receiving area

[0070]

122‧‧‧ inside side

[0071]

130‧‧‧ screws

[0072]

132‧‧‧ screw head

[0073]

134‧‧‧ screw

[0074]

140‧‧‧Support screws

[0075]

222‧‧‧Contacts

[0076]

224‧‧‧Guidance

[0077]

226‧‧‧ top surface

[0078]

228‧‧‧Tool slot

[0079]

230‧‧‧ thread

[0080]

416‧‧‧Support screw holes

[0081]

517‧‧‧ screw holes

[0082]

618‧‧‧ Guide area

[0010]

1 is a simplified cross-sectional view of a detachable denture device in accordance with an embodiment of the present invention.

[0011]

FIG. 2 is a simplified schematic view of an embodiment of the screw of FIG. 1. FIG.

[0012]

Figure 3 is a simplified side elevational view of an embodiment of the screw of Figure 1.

[0013]

4 to 7 are simplified schematic views of an embodiment of a method of attaching the screw of Fig. 1 to the wall of the support.

[0014]

Figure 8 is a simplified schematic view of an embodiment of a method of securing the removable denture device of Figure 1 to a dental implant.

[0015]

Embodiments of the present invention will be described below in conjunction with the associated drawings. In the drawings, the same reference numerals indicate the same or similar elements or methods.

[0016]

1 is a simplified cross-sectional view of a detachable denture device 100 in accordance with an embodiment of the present invention. As shown in FIG. 1, the detachable denture device 100 includes an abutment 110, an upper structure 120, and a screw 130. The support 110 is for attaching a dental implant 104 embedded in the bone 102 and includes an abutment collar 111 and a hollow chamber 112. The upper structure 120 is provided with a receiving region 121 and an inner surface 122 surrounding the receiving portion 121. The screw 130 includes a screw head 132 and a screw rod 134. In this embodiment, the hollow cavity 112 of the support 110 has an opening 113 and an outer surface 114, and a screw hole is formed on the abutment wall 115 of the hollow cavity 112.

[0017]

As shown in FIG. 1, an abutment screw 140 can be inserted into the hollow cavity 112 through the opening 113 in the hollow cavity 112, and the abutment screw 140 can be inserted through the abutment joint 111 to lock in. In the dental implant 104, the support 110 is thereby secured to the dental implant 104.

[0018]

Embodiments of the screw 130 will be further described below in conjunction with FIGS. 2 through 3. 2 is a simplified schematic view of an embodiment of a screw 130 of the present invention. 3 is a simplified side elevational view of an embodiment of a screw 130 of the present invention.

[0019]

As shown in FIGS. 2 and 3, the screw head 132 includes a contact member 222 and a guiding member 224. The contact portion 222 has a top surface 226, and the guiding portion 224 is located between the contact portion 222 and the screw 134, and the guiding portion 224 has a chamfer structure. A screw thread 230 is disposed on the screw 134.

[0020]

In the embodiment of Fig. 2, the side surface of the contact portion 222 of the screw head 132 is rectangular in shape. As shown in FIG. 2, a screw slot 228 is further disposed on the screw head 132. In practice, the shape of the tool slot 228 can be, but is not limited to, a shape of a letter, a cross, a triangle, a hexagon, or a star, so that the operator can insert the tool into the tool slot 228 by using a corresponding screwdriver or the like to screw the screw. 130 is screwed into a screw hole in the seat wall 115 of the aforementioned hollow body 112. Additionally, the tool slot 228 can also be designed to extend throughout the screw 130 to save the amount of material needed to make the screw 130.

[0021]

Please refer to FIG. 4 to FIG. 7 , which are simplified schematic views of an embodiment of a method for mounting the screw 130 to the support wall 115 of the support 110 .

[0022]

4 is a simplified cross-sectional view of an embodiment of a support 110 of the present invention. In the present embodiment, the abutment screw hole 416 penetrating the abutment joint portion 111 is provided on the abutment joint portion 111 of the abutment 110.

[0023]

As shown in FIG. 5, before the screw 130 is mounted on the support wall 115 of the support 110, a screw hole 517 can be formed in the support wall 115 of the hollow body 112. In practice, the depth of the screw hole 517 can be determined by the length of the screw 134 of the screw 130. For example, in some embodiments, the screw holes 517 can be implemented with blind holes that do not extend through the seat wall 115. In other embodiments, the screw holes 517 can be implemented with perforations that extend through the seat wall 115.

[0024]

Next, as shown in FIG. 6, a guiding region 618 having a size and shape matching the guiding portion 224 of the screw 130 can be formed in the screw hole 517 by a suitable tool. For example, the guiding area 618 in this embodiment is circular, and the diameter of the guiding area 618 is the same as or slightly larger than the diameter of the guiding portion 224 of the screw 130, and the guiding area 618 and the guiding Both the diameters of the lead portions 224 are larger than the diameter of the screw 134.

[0025]

When the screw 130 is mounted to the screw hole 517 on the support wall 115, the alignment between the guide structure of the guiding portion 224 and the guiding portion 618 can assist the operator to make the screw 130 easier and more accurate. Lock into the screw hole 517 to reduce the problem of the screw 130 being offset.

[0026]

When the screw 130 is disposed in the screw hole 517, a portion of the screw head 132 may protrude outward from the outer surface 114 of the hollow cavity 112. For example, as shown in FIG. 7, when the screw 130 is disposed in the screw hole 517, the guiding portion 224 may be located in the guiding portion 618, and the contact portion 222 may protrude outward from the outer surface 114 of the hollow cavity 112.

[0027]

When the upper structure 120 is seated on the support 110, a partial area of the outer surface 114 of the hollow body 112 will contact a partial area of the inner side 122 of the upper structure 120, and the screw head 132 will abut the opposite side of the inner side 122. To apply a positive force to the inner side surface 122, whereby the upper structure 120 is removably snapped onto the support 110.

[0028]

For example, FIG. 8 illustrates a simplified schematic diagram of one embodiment of a method of securing a removable denture device 100 to a dental implant 104. As previously mentioned, the operator can extend the abutment screw 140 into the hollow cavity 112 of the abutment 110 via the opening 113, and then pass the abutment screw 140 through the abutment screw hole 416 of the abutment engagement portion 111 and lock The dental implant 104 is inserted into the dental implant 104 thereby securing the support 110 to the dental implant 104.

[0029]

Next, the operator only needs to align the accommodating area 121 of the upper structure 120 with the pedestal 110 and press the upper structure 120 downwardly to the pedestal 110 to cover the pedestal 110, the outer surface 114 of the hollow body 112. The partial area will be in contact with a partial area of the inner side 122 of the upper structure 120. At this time, the contact portion 222 of the screw head 132 will abut against the opposite side of the inner side surface 122 of the accommodating portion 121 to apply a positive force to the inner side surface 122. In this way, the friction between the outer surface 114 of the hollow body 112 and the inner side surface 122 of the upper structure 120, and the stress between the contact portion 222 of the screw head 132 and the inner side surface 122 of the accommodating portion 121 can be achieved. The upper structure 120 is easily removably snapped onto the support 110.

[0030]

If the upper structure 120 needs to be separated from the support 110 in the future, the operator only needs to apply appropriate force to the upper structure 120 to push away from the support 110, thereby overcoming the upper structure 120 and the support 110 and the screw 130. The friction between the upper structure 120 and the support 110 is separated without damaging the structure or appearance of the upper structure 120 and the support 110.

[0031]

Therefore, the manner in which the upper structure 120 and the support 110 are engaged by the screw 130 facilitates cleaning, disinfection, or treatment of the tissue surrounding the detachable denture device 100, and facilitates the detachable denture device 100 and adjacent teeth. Cleaning or treatment of the gap between 106s also facilitates repair or replacement of the superstructure 120.

[0032]

Please note that when the upper structure 120 is engaged on the support 110, the screw head 132 of the screw 130 only abuts against the inner side of the accommodating area 121 of the upper structure 120, but the screw 130 does not penetrate the upper structure 120, so the screw 130 will not be exposed to the superstructure 120 and will not damage the structure and integrity of the superstructure 120.

[0033]

In addition, the screw of any shape and size can realize the function of the aforementioned screw 130. In fact, the shape and size of the screw 130 is specifically designed to be more widely used between different supports and upper configurations. The embodiment of the screw 130 will be further described below.

[0034]

In practice, proper design of the length of the screw 134 of the screw 130 is to avoid obstructing the installation or removal of the aforementioned seat screw 140.

[0035]

For example, in certain embodiments, the length of the screw 134 can be designed to be less than half the inner diameter of the hollow cavity 112.

[0036]

In other embodiments, the length of the screw 134 can be designed to be slightly less than the thickness of the abutment wall 115 of the hollow body 112.

[0037]

In some embodiments, the length of the screw 134 can be designed to be less than 150% of the thickness of the abutment wall 115 of the hollow cavity 112.

[0038]

After many trials, it has been found that the length of the screw 134 is designed to be between 0.5 millimeters and 3.5 millimeters, supporting the widest variety of existing support structures and the widest range of applications.

[0039]

Alternatively, the thread turns or pitches on the screw 134 may be appropriately designed to improve the stability of the screw 130 when the screw holes 517 on the seat wall 115 are locked.

[0040]

For example, after testing, it was found that the number of threads on the screw 134 is designed to be between 1.5 and 6, which can effectively improve the tightness between the screw 130 and the screw hole 517 while avoiding damage to the internal thread of the screw hole 517. This can extend the life of the screw 130.

[0041]

Further, by designing the pitch of the screw 134 to be between 0.1 mm and 1.0 mm, the tightness between the screw 130 and the screw hole 517 can be effectively improved while the internal thread of the screw hole 517 is prevented from being damaged.

[0042]

In practice, the diameter of the screw head 132 is preferably designed to be between 0.5 and 3.0 mm to provide a better snap fit.

[0043]

It should be noted that the shape of the support 110 in the foregoing embodiment is merely an exemplary embodiment and is not intended to limit the actual implementation of the present invention. For example, the shape of the support 110 or the shape and size of the hollow body 112 can be adjusted according to actual needs.

[0044]

It can be seen from the foregoing description that the operator only needs to align the accommodating area 121 of the upper structure 120 with the pedestal 110 and press the upper structure 120 downward in the direction of the pedestal 110 to cover the pedestal 110, thereby obtaining a hollow cavity. The friction between the outer surface 114 of the body 112 and the inner side surface 122 of the upper structure 120, and the stress between the contact portion 222 of the screw head 132 and the inner side surface 122 of the receiving portion 121, facilitates detachability of the upper structure 120. The split mode is engaged on the support 110.

[0045]

If the upper structure 120 needs to be separated from the support 110 in the future, the operator only needs to apply appropriate force to the upper structure 120 to push away from the support 110, so that the upper structure 120 can be separated from the support 110, and The structure or appearance of the superstructure 120 and the support 110 may be damaged.

[0046]

Therefore, the manner in which the upper structure 120 and the support 110 are engaged by the screw 130 facilitates cleaning, disinfection, or treatment of the tissue surrounding the detachable denture device 100, and facilitates the detachable denture device 100 and adjacent teeth. Cleaning or treatment of the gap between 106s also facilitates repair or replacement of the superstructure 120.

[0047]

In some of the foregoing embodiments, the side shape of the contact portion 222 of the screw head 132 is designed to be rectangular. Such a design method is not a simple design choice, but it has been found that such a screw head design method can provide more application flexibility to the operator, so that the operator can appropriately trim the shape of the contact portion 222 according to actual needs, thereby being more suitable. The shape of the accommodating area 121 of the upper structure 120 or the size of the gap between the upper structure 120 and the support 110 is used to enhance the engaging effect between the upper structure 120 and the support 110.

[0048]

The aforementioned structure of the screw 130 is suitable for a plurality of supports of different structures and has a wide range of application flexibility.

[0049]

Moreover, since the aforementioned screw 130 is hidden in the accommodating area 121 of the upper structure 120 and is not exposed to the upper structure 120, the solid energy is protected by the upper structure 120, and is not easily damaged or rusted. Effectively extending the life of the detachable denture device 100.

[0050]

In addition, since the screw 130 is not exposed to the outer structure 120, it does not affect the appearance, and does not cause a foreign body sensation in the patient's mouth, and can improve the comfort of use of the denture.

[0051]

Certain terms are used throughout the description and claims to refer to particular elements. However, those of ordinary skill in the art should understand that the same elements may be referred to by different nouns. The specification and the scope of patent application do not use the difference in name as the way to distinguish the components, but the difference in function of the components as the basis for differentiation. The term "including" as used in the specification and the scope of the patent application is an open term and should be interpreted as "including but not limited to". In addition, "coupled" includes any direct and indirect means of attachment herein. Therefore, if the first element is described as being coupled to the second element, the first element can be directly connected to the second element by electrical connection or wireless transmission, optical transmission or the like, or by other elements or connections. The means is indirectly electrically or signally connected to the second component.

[0052]

The description of "and/or" as used herein includes any combination of one or more of the listed items. In addition, the terms of any singular are intended to include the meaning of the plural, unless otherwise specified in the specification.

[0053]

The term "element" as used in the specification and claims includes the concept of a component, a layer, or a region.

[0054]

The size and relative sizes of some of the elements of the drawings may be exaggerated, or the shapes of some of the elements may be simplified so that the contents of the embodiments can be more clearly expressed. Accordingly, the shapes, dimensions, relative sizes and relative positions of the various elements in the drawings are merely illustrative and are not intended to limit the scope of the invention. In addition, the present invention may be embodied in many different forms, and the present invention should not be limited to the embodiment of the present invention.

[0055]

For convenience of description, some descriptions relating to the relative position in space may be used in the specification to describe the function of an element in the drawing or the relative spatial relationship between the element and other elements. For example, "on", "above", "under", "below", "above", "below", "up", "down", etc. It should be understood by those of ordinary skill in the art that these descriptions relating to relative positions in space include not only the orientation of the described elements in the drawings, but also the use and operation of the described elements. Or various different pointing relationships when assembling. For example, if the pattern is turned upside down, the component that was originally described by "on" will become "under". Therefore, the description of "on" in the specification includes two different pointing relationships of "under" and "on". Similarly, the term "upward" as used herein includes two different pointing directions, "upward" and "downward".

[0056]

In the specification and claims, if the first element is described on the second element, above the second element, connected, coupled, coupled to or coupled to the second element, the first element is directly Positioning on the second component, directly connecting, directly bonding, or directly coupling to the second component may also indicate that other components exist between the first component and the second component. In contrast, if the first element is described as being directly on the second element, directly connected, directly bonded, directly coupled, or directly connected to the second element, there is no other element between the first element and the second element. .

[0057]

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the claims of the present invention are intended to be within the scope of the present invention.

100‧‧‧Removable denture device

102‧‧‧ alveolar bone

104‧‧‧ Dental implants

106‧‧‧ teeth

110‧‧‧Support

111‧‧‧Support joint

112‧‧‧ hollow body

113‧‧‧Opening

114‧‧‧ outer surface

115‧‧‧Support wall

120‧‧‧Upper structure

121‧‧‧Receiving area

122‧‧‧ inside side

130‧‧‧ screws

132‧‧‧ screw head

134‧‧‧ screw

140‧‧‧Support screws

Claims (20)

[Item 1] A detachable denture device comprising:
a seat for attaching a dental implant, and comprising a seat joint and a hollow body, wherein the hollow body has an opening and an outer surface, and the hollow body is supported on the wall Have a screw hole;
An upper structure, an accommodating area and an inner side surface surrounding the accommodating area; and a screw including a screw head and a screw, the screw head includes a contact portion and a guiding portion, the screw is provided with a thread The contact portion has a top surface, the guiding portion is located between the contact portion and the screw, and when the screw is disposed in the screw hole, a part of the screw head is from the outer surface of the hollow cavity Outwardly protruding, but the screw does not penetrate the upper structure;
Wherein, when the upper structure covers the support, a partial area of the outer surface of the hollow body is in contact with a partial area of the inner side of the upper structure, and the screw head will abut the inner side On the opposite side, a positive force is applied to the inner side surface, whereby the upper structure is removably snapped onto the seat. [Item 2] The detachable denture device of claim 1, wherein the screw hole is provided with a guiding area shaped to cooperate with the guiding portion, and when the screw is disposed in the screw hole, the guiding portion is located In the guiding zone, the contact portion protrudes outward from the outer surface of the hollow cavity, and when a partial area of the outer surface of the hollow cavity is in contact with a partial area of the inner side of the upper structure The contact portion will abut the opposite side of the inner side to apply the positive force to the inner side. [Item 3] The detachable denture device of claim 2, wherein the side surface of the contact portion has a rectangular shape. [Item 4] The detachable denture device of claim 1, wherein the length of the screw is less than half the inner diameter of the hollow body. [Item 5] The detachable denture device of claim 1, wherein the length of the screw is less than the thickness of the seat wall of the hollow cavity. [Item 6] The detachable denture device of claim 1, wherein the length of the screw is less than 150% of the thickness of the seat wall of the hollow cavity. [Item 7] The detachable denture device of claim 1, wherein the length of the screw is between 0.5 mm and 3.5 mm. [Item 8] The detachable denture device of claim 1, wherein the number of threads on the screw is between 1.5 and 6. [Item 9] The detachable denture device of claim 1, wherein the screw has a pitch of between 0.1 mm and 1.0 mm. [Item 10] The detachable denture device of claim 1, wherein the screw head has a diameter of between 0.5 mm and 3.0 mm. [Item 11] A screw for use in a detachable denture device, wherein the detachable denture device includes a seat and an upper structure for attaching a dental implant, and includes a seat joint and a hollow cavity The hollow body has an opening and an outer surface, and the wall of the hollow body has a screw hole, and the upper structure is provided with an accommodating area and an inner side surrounding the accommodating area, the screw comprises :
a screw head comprising a contact portion and a guiding portion; and a screw provided with a thread thereon;
Wherein the contact portion has a top surface, the guiding portion is located between the contact portion and the screw, and when the screw is disposed in the screw hole, a part of the screw head may be from the outer surface of the hollow cavity Outwardly protruding, but the screw does not penetrate the upper structure;
Wherein, when the upper structure covers the support, a partial area of the outer surface of the hollow body is in contact with a partial area of the inner side of the upper structure, and the screw head will abut the inner side On the opposite side, a positive force is applied to the inner side surface, whereby the upper structure is removably snapped onto the seat. [Item 12] The screw of claim 11, wherein the screw hole is provided with a guiding area shaped to cooperate with the guiding portion, and when the screw is disposed in the screw hole, the guiding portion is located at the guiding And contacting the contact portion outwardly from the outer surface of the hollow cavity, and when the partial area of the outer surface of the hollow cavity is in contact with a partial area of the inner side of the upper structure, the contact The portion will abut the opposite side of the inner side to apply the positive force to the inner side. [Item 13] The screw of claim 12, wherein the side surface of the contact portion has a rectangular shape. [Item 14] The screw of claim 11, wherein the length of the screw is less than half of the inner diameter of the hollow body. [Item 15] The screw of claim 11, wherein the length of the screw is less than the thickness of the seat wall of the hollow cavity. [Item 16] The screw of claim 11, wherein the length of the screw is less than 150% of the thickness of the seat wall of the hollow cavity. [Item 17] The screw of claim 11, wherein the length of the screw is between 0.5 mm and 3.5 mm. [Item 18] The screw of claim 11, wherein the number of threads on the screw is between 1.5 and 6. [Item 19] The screw of claim 11, wherein the screw has a pitch of between 0.1 mm and 1.0 mm. [Item 20] The screw of claim 11, wherein the diameter of the screw head is between 0.5 mm and 3.0 mm.