JP2007068821A - Reinforcing material for dental bridge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reinforcing material for dental bridge which is used to fix a dental prosthesis for the area of missing tooth by using the adjacent teeth locating both sides of the missing tooth having high operability, allowing the dental bridge to be made easily, and can fix the bridge in the smaller hollow, reducing the cutting of the adjacent teeth. <P>SOLUTION: The reinforcing material for dental bridge provides a female member 1 comprised of a flat and hollow sliding receiver 1a of forming an insertion opening at one end and a closed part 1ab at the other end and having a width of 2 to 6 mm and a locking part 1b which protrudes from the closed part 1ab of the sliding receiver 1a and has a width of 1 to 5 mm, smaller than that of the sliding receiver 1a, and the male member 2 comprised of a flat sliding part 2a formed like an external shape by which one end can slide from the insertion opening 1aa of the female member 1 into the sliding receiver, and a locking part 2b which is mounted projecting from the other end of the sliding part 2a and has a width smaller than that of the sliding part 2a and a length of 1 to 5 m. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a dental bridge reinforcing material used when fixing a dental bridge as a dental prosthesis using adjacent teeth located on both sides of a treatment site where a tooth has been lost.

  In general, in cases where teeth are lost in the absence of roots, if there are healthy adjacent teeth on both sides of the treatment site where the teeth have been lost, a dental prosthesis that mimics the shape of the tooth called a bridge is used. There is a treatment method in which the bridge is prepared outside the oral cavity, and the bridge is fixed to a treatment site using a patient's adjacent teeth. As a method of fixing the bridge, a treatment method is usually widely used in which the bridge is bonded and fixed to an abutment tooth formed by cutting healthy adjacent teeth. In the case of required cases, bridges such as resin front bridge, porcelain baked bridge and all ceramic bridge are used.

  And in the method of adhering and fixing a bridge to this abutment tooth, before manufacturing a dental prosthesis called these bridges, first, to make healthy adjacent teeth located on both sides of the treatment site into an abutment tooth Normally, it is necessary for the surgeon to dare to carve out adjacent teeth that form the natural shape of the tooth by a turbine or the like into a shape that approximates a truncated cone shape.

  After the preparation of the abutment tooth in this way, an impression (negative type) of the treatment site containing this abutment tooth is taken from within the patient's oral cavity, and a plaster model (work replica) is produced from this impression. However, a bridge is made on the basis of this plaster model. Specifically, in the case of, for example, a resin front bridge and a porcelain baked bridge, a core portion is first formed by using wax on the plaster model by a lost wax casting method. The wax mold is buried in a refractory investment material, and after the refractory investment material is cured, it is placed in an electric furnace and heated to incinerate the wax mold, and a metal is cast into the obtained mold. After excavating this casting from the refractory investment material, cutting and polishing to produce a metal core part, and building and polymerizing a hard resin for the crown on the outer surface of this metal core part, or building and firing ceramics It is made by. In the case of an all-ceramic bridge, a double model is made using a refractory model material. After the ceramic material is built and fired on the double model, the double refractory model is removed, and the shape is corrected and polished. Have been made.

  However, in the above-described method of adhering and fixing the bridge to the abutment tooth, it is necessary to largely cut the healthy adjacent tooth in order to form the abutment tooth having a substantially truncated cone shape. Not only is there a problem that the burden on the patient is heavy because it must be sacrificed, but the operation of forming the abutment itself is also careful with consideration of the shape and structure of the dental prosthesis that the surgeon will make later. Since it is performed by manipulating a turbine or the like in a very narrow oral cavity and cutting a healthy adjacent tooth into a substantially truncated cone shape, there is a problem that it is a very difficult work and requires considerable skill. There is also a problem that the surgeon is extremely burdensome because the risk of sharply cutting a healthy adjacent tooth into a substantially truncated cone shape is large and the operation cannot be allowed to fail.

  In addition, the bridge itself is not only different in shape and part of the oral cavity depending on each patient, but is also a complicated work requiring extremely high dimensional accuracy in the order of several μm. Was necessary. In other words, the treatment period until the bridge is finally fixed in the oral cavity of the patient is long, so that the patient is forced to pay a lot of money and labor. Furthermore, since the bridge is an indirect method in which the work for creating the bridge is performed at a dental laboratory or the like that is different from a treatment center that performs treatment at a dental clinic or the like, a bridge with perfect accuracy can be obtained even with a bridge created by an expert. The current situation is that it is rarely done. Moreover, since it is an indirect method, there also existed problems, such as the color tone of the produced bridge not matching with an adjacent tooth | gear completely.

  Therefore, it is possible to perform the bridge preparation work at a treatment place such as a dental clinic without sharply cutting a healthy adjacent tooth or indirectly making a bridge by a dental laboratory, for example, by using a resin material An artificial tooth-like prosthesis for a bridge (see, for example, Patent Document 1), which is configured and has a shape that approximates a tooth inside the oral cavity from the cervical mucosa, and has concave portions formed on adjacent surfaces on both sides. A dental fiber reinforced composite material made of rod-like glass fibers forming a support structure for a bridge between adjacent teeth (for example, see Patent Document 2) has been developed.

  However, in the former artificial tooth-like prosthesis for bridges, it is absolutely necessary to carefully form the abutment tooth while taking into account the shape and structure of the dental prosthesis to be produced after cutting a healthy adjacent tooth greatly. In addition, there is no need to make a plaster model by taking an impression or to make an indirect dental prosthesis outside the oral cavity, and it is possible to make a bridge in a short time directly only in a treatment place that performs treatment such as a dental clinic. However, since this bridge is bonded only by the resin material when it is fixed between adjacent teeth, there is a drawback that the bonding strength is insufficient.

  On the other hand, the latter dental fiber reinforced composite material specifically has, for example, a cavity that faces the treatment site side (site side where the tooth is lost) on both adjacent teeth located on both sides of the treatment site where the tooth has been lost. After the glass reinforced composite material was cut longer than the distance between the cavity of both adjacent teeth and dipped in resin, etc., both ends of the glass reinforced composite material were bent in the gingival direction. Is placed between the cavities of both adjacent teeth, the resin material is poured into the cavities, and the resin material is polymerized and cured together with the dental fiber reinforced composite, and then the resin material is placed on the fixed glass reinforced composite. The bridge is produced by building and curing in the shape of.

  However, this dental fiber reinforced composite material cuts some healthy adjacent teeth somewhat, but does not cut much compared to forming an abutment tooth having a substantially truncated cone shape. Although the shape can be freely changed until the built-up resin material is cured, it can be applied to many cases, but it can be cut longer than the distance between the cavities of both adjacent teeth, or it can be immersed in the resin and coated with resin. Since it must be installed in the gingival direction between the cavities of both adjacent teeth, it not only has the disadvantages of being troublesome and poor in operability, but also has a certain degree of strength. In order to obtain this, a bundle of more glass fibers must be used, and in order to fix the dental fiber reinforced composite, the dental fiber reinforced composite is flattened at each end. Must be installed in both cavities, so it takes a lot of space to install the dental fiber reinforced composite material so thick in the cavities. In addition, there was a disadvantage that a healthy adjacent tooth had to be cut more than necessary.

JP 2004-329656 A Japanese Patent Laid-Open No. 11-116422 (paragraph number 0018, FIG. 1)

  The present invention is a dental bridge reinforcing material which is used when a dental prosthesis is fixed to a treatment site where a tooth has been lost by using adjacent teeth located on both sides of the site in order to eliminate the disadvantages of the prior art. It is another object of the present invention to provide a dental bridge reinforcing material that has high operability and can be easily produced as a bridge and can be fixed to a small cavity with a small amount of cutting of adjacent teeth.

  As a result of diligent research to solve the above-mentioned problems, the present inventors have configured the dental bridge reinforcement so that the length in the longitudinal direction can be freely and easily changed and the width of both ends thereof. Investigating that it is possible to obtain a dental bridge reinforcing material that is easy to manufacture and can be easily manufactured by forming it so that it can be fixed to a small cavity of an adjacent tooth that is narrow and requires a small amount of cutting. The present invention has been completed.

  That is, the present invention has a flat shape in which an insertion port is formed at one end and a closed portion is formed at the other end, and the width is 2 to 6 mm, and the protruding portion protrudes from the closed portion of the slide receiving portion. A female member comprising a locking portion, the width of which is narrower than the width of the sliding receiving portion, and a length of 1 to 5 mm, and one end of the female receiving member in the sliding receiving portion through the insertion opening of the female member A sliding part having a flat shape formed in a slidable outer shape and a projecting from the other end of the sliding part, the width of which is narrower than the width of the sliding part and the length of 1 to 5 mm It is a dental bridge reinforcing material characterized in that it is composed of a male member comprising a locking portion.

  And the sliding part of the male member is solid, or the convex ribs that engage with the sliding receiving part of the female member and the sliding part of the male member are formed in the length direction. It was also found that the bending rigidity can be improved.

  Further, if a hole is formed through the female member slide receiving portion, the male member sliding portion is inserted into the slide receiving portion of the female member when the male member sliding portion is inserted. Since air is released, not only the sliding portion can be easily inserted into the sliding receiving portion, but also the resin material built up when building the dental material by building up the resin material is slid from the hole into the female member. It is preferable that the dental bridge reinforcement can enter the moving part and increase the stability and strength of the dental bridge reinforcement, and if the dental bridge reinforcement according to the present invention is made of metal or hard plastic, the overall strength It has also been found that it is preferable because it increases.

  The dental bridge reinforcing material according to the present invention is a female member having a flat sliding receiving portion having an insertion opening at one end and a closing portion at the other end and having a width of 2 to 6 mm. And a male member having a flat sliding portion formed in an outer shape in which one end is slidable from the insertion opening of the female member into the sliding receiving portion. The dental bridge reinforcing material according to the present invention is provided between the respective cavities formed on both adjacent teeth located on both sides of the treatment site where the tooth has been lost. When the male member is slid in a state in which one end of the sliding portion of the male member is inserted into the insertion port of the sliding receiving portion of the female member. The length of the dental bridge reinforcement in the longitudinal direction matches the distance between the cavities of both adjacent teeth The dental bridge reinforcing material according to the present invention can be installed between the cavity of both adjacent teeth simply by adjusting so that the male member is inserted into the insertion opening of the sliding receiving portion of the female member. Since it is used with one end of the sliding part inserted, its rigidity is higher than that of the conventional dental fiber reinforced composite, so that the cavity of both adjacent teeth like the conventional dental fiber reinforced composite There is no need for troublesome operations such as cutting longer than the distance between them, immersing them in a resin, coating them with resin, or installing them in the gingival direction between the cavities of both adjacent teeth. Therefore, not only can the operability and convenience be remarkably improved, but the dental bridge reinforcing material according to the present invention is fixed to the dental bridge reinforcing material after fixing between the cavity of both adjacent teeth. Build up tooth shape with resin materials When making a bridge by Rukoto, it is possible to remarkably improve the rigidity and durability than conventional bridges.

  Further, the dental bridge reinforcing material according to the present invention is provided so that the female member having the above-described configuration protrudes from the closed portion of the slide receiving portion, and the width thereof is narrower than the width of the slide receiving portion. A locking portion having a length of 1 to 5 mm is projected from the other end of the sliding portion of the male member having the above-described configuration, and the width thereof is narrower than the width of the sliding portion, and the length thereof is Each of the locking portions is 1 to 5 mm, and both end portions thereof are narrow and formed so as to be fixed to a small cavity of an adjacent tooth formed with a small amount of cutting. In order to obtain a certain degree of strength, a large number of glass fibers are bundled so that the glass fibers are formed in a flat shape, and the respective ends are left as they are in the cavity of both adjacent teeth. Compared to conventional dental fiber reinforced composites that have to form large cavities In addition, since it can be installed in a remarkably small cavity, not only can the amount of cutting of the adjacent teeth be greatly reduced, but also the patient and the operator by forming a large cavity in the healthy adjacent teeth. The load can be reduced, and the slide receiving portion of the female member has a flat shape and is formed in a hollow shape having a width of 2 to 6 mm. According to the present invention, the sliding part of the male member inserted into the insertion port has a flat shape formed in an outer shape slidable on the sliding receiving part, and is installed and fixed between the cavity of both adjacent teeth. When building a resin material such as a hard resin or a photopolymerization resin into a dental bridge reinforcement in the shape of a tooth, it has a suitable size that can be applied to the building of teeth of various sizes and shapes such as the front teeth and molars. .

  The sliding portion of the male member is solid, or a convex rib that engages with the sliding receiving portion of the female member and the sliding portion of the male member is formed in the length direction. If it is, it is not only preferable because the bending rigidity can be improved, but in the aspect in which convex ribs are formed, the surface area can be increased, so that the shape of the tooth is built up. In doing so, it is possible to improve the bonding force between a material such as a resin material and the dental bridge reinforcing material according to the present invention, which is preferable.

  Further, if a hole is formed through the female member slide receiving portion, the male member sliding portion is inserted into the slide receiving portion of the female member when the male member sliding portion is inserted. Since air is released, it is easy to insert the sliding portion into the sliding receiving portion, which is not only preferable, but the resin material flows into the sliding receiving portion from this hole when building up the tooth shape. It is preferable that the bonding force between the material and the dental bridge reinforcing material according to the present invention can be further improved, and if the dental bridge reinforcing material according to the present invention is made of metal or hard plastic, the overall strength is improved. Is preferable.

Hereinafter, a dental bridge reinforcing material according to the present invention will be described in detail with reference to the drawings.
1 is a perspective explanatory view showing an embodiment of a dental bridge reinforcing material according to the present invention, FIG. 2 is a cross-sectional explanatory view taken along line AA of FIG. 1, and FIG. FIG. 4 is a sectional view taken along the line BB of FIG. 3, FIG. 5 is a sectional view taken along the line CC of FIG. 3, and FIG. 6 is a sectional view of the dental bridge reinforcing material according to the present invention. FIG. 7 is a front explanatory view of FIG. 6.

  In the drawings, reference numeral 1 denotes a hollow slide receiving portion 1a having an insertion opening 1aa at one end and a closed portion 1ab formed at the other end and having a width of 2 to 6 mm, and the sliding receiving portion 1a. A female member comprising a locking portion 1b protruding from the closing portion 1ab and having a width narrower than that of the sliding receiving portion 1a and a length of 1 to 5 mm, as shown in FIGS. As described above, the sliding portion 2a of the male member 2 described later is slidably inserted into the sliding receiving portion 1a from the insertion port 1aa.

  As the sliding receiving portion 1a of the female member 1, an insertion port 1aa is formed at one end and a closing portion 1ab is formed at the other end, and the sliding of a male member 2 to be described later is inserted into the sliding receiving portion 1a from the insertion port 1aa. Any section may be used as long as it has a hollow flat shape so that the moving part 2a can be slidably inserted and has a width of 2 to 6 mm. For example, as shown in FIGS. The cross section may be substantially elliptical as shown in FIGS. 3 to 5 but formed on both adjacent teeth located on both sides of the treatment site where the tooth has been lost. The dental bridge reinforcing material according to the present invention, which is installed and fixed between the respective cavities, must be at least flat so that the shape of the resin material can be easily built on the teeth, and the cavities of both adjacent teeth A rigid resin or a photopolymerization resin is attached to the dental bridge reinforcing material according to the present invention installed and fixed in between. When building up the shape of a tooth with a resin material such as, the width needs to be 2 to 6 mm so as to be suitable for building up teeth of various sizes and shapes such as anterior teeth and molars. . That is, when the width of the sliding receiving portion 1a of the female member 1 is less than 2 mm, the width is too narrow to be built in the shape of a tooth, and the bending rigidity is also reduced. On the other hand, if the width of the sliding receiving portion 1a of the female member 1 exceeds 6 mm, it is not preferable because the width is too wide and it is difficult to build up a tooth shape.

  In addition, convex ribs 3 that are engaged with each other are formed in the length direction on the sliding receiving portion 1a of the female member 1 and the sliding portion 2a of the male member 2 as shown in FIGS. Therefore, not only is it preferable to improve the bending rigidity, but also the surface area can be increased. Therefore, when building the shape of the tooth, the resin material and the dental bridge reinforcing material according to the present invention This is preferable because it can improve the bonding force.

  Further, if a hole 4 is formed in the sliding receiving portion 1a of the female member 1 as shown in FIGS. 3 and 4, for example, a male member described later on the sliding receiving portion 1a of the female member 1 is provided. Since the air in the slide receiving portion 1a is released from the hole 4 when the second sliding portion 2a is inserted, it is not only preferable because the sliding portion 2a can be easily inserted into the sliding receiving portion 1a. Since the resin material flows into the sliding receiving portion 1a from the hole 4 when it is built up in the shape of a tooth, the bonding force between the resin material and the dental bridge reinforcing material according to the present invention can be further improved. preferable.

  The hole 4 penetrating through the sliding receiving portion 1a of the female member 1 may be located at any position as long as it penetrates the inside and outside of the sliding receiving portion 1a. However, as shown in FIG. 3 and FIG. 4, if it is located in the vicinity of the closing part 1ab of the sliding receiving part 1a, the sliding part 2a of the male member 2 to be described later is provided in the sliding receiving part 1a of the female member 1. Even if it is inserted and slid to the vicinity of the closing portion 1ab, it is preferable because the air in the sliding receiving portion 1a can be smoothly discharged, and the hole 4 is shown in FIGS. Even if there is one, there may be a plurality, although not shown, it is desirable that the strength of the sliding receiving portion 1a itself of the female member 1 is maintained.

  The sliding receiving portion 1a of the female member 1 has a locking portion 1b whose width is narrower than that of the sliding receiving portion 1a and whose length is 1 to 5 mm, and is a closed portion of the sliding receiving portion 1a. A locking portion 2b that protrudes from 1ab and slides on the sliding portion 2a of the male member 2 described later is narrower than the sliding portion 2a and has a length of 1 to 5 mm. 6 and 7, these locking portions 1b and 2b are respectively formed on both adjacent teeth located on both sides of the treatment site where the tooth has been lost. It plays the role of being fixed in the cavity.

  Thus, the locking portion 1b of the female member 1 has a width narrower than that of the sliding receiving portion 1a and a length of 1 to 5 mm, and the locking portion of the male member 2 described later. Since 2b is narrower than the width of the sliding part 2a and its length is 1 to 5 mm, it can be installed in a cavity that is much smaller than conventional dental fiber reinforced composites. In addition, the amount of cutting for forming a cavity in the adjacent tooth can be greatly reduced, and the burden on the patient and the operator due to the formation of a large cavity in the healthy adjacent tooth can be reduced.

  That is, the widths of the locking portions 1b and 2b are formed so as to be narrower than the width of the sliding receiving portion 1a of the female member 1 and the sliding portion 2a of the male member 2 described later. In addition, it is easy to build up the resin material in a tooth shape by securing a certain width of the sliding receiving portion 1a and the sliding portion 2a each having a flat shape, and the locking portions 1b and 2b are This is to reduce the amount of cutting for forming a cavity in the adjacent tooth by reducing the space for installation and fixing as much as possible, and the length of these locking portions 1b and 2b is 1 to 5 mm. If the length is less than 1 mm, the dental bridge reinforcing material according to the present invention cannot be stably installed and fixed between the cavity of both adjacent teeth. This is because when the length exceeds 5 mm, the cutting amount of adjacent teeth increases.

  These locking portions 1b and 2b are at least as narrow as the width of the sliding receiving portion 1a of the female member 1 and the sliding portion 2a of the male member 2 to be described later, and have a length of 1 to 5 mm. 1, for example, as shown in FIGS. 1 and 2, from the other end of the closing portion 1 ab of the sliding receiving portion 1 a of the female member 1 and the sliding portion 2 a of the male member 2 described later. Even if each of them has a prismatic shape with a protruding end and a rounded end, for example, as shown in FIG. 3 and FIG. 4, from the closed portion 1ab of the sliding receiving portion 1a and the other end of the sliding portion 2a. The cross section formed continuously may be an ellipse and a tapered shape.

  2 has a flat sliding portion 2a formed in an outer shape slidable in the sliding receiving portion 1a from the insertion port 1aa of the female member 1 and the other end of the sliding portion 2a. And a locking member 2b whose width is narrower than that of the sliding portion 2a and whose length is 1 to 5 mm, and the sliding of the female member 1 as shown in FIGS. It is slidably inserted into the insertion port 1aa of the receiving part 1a.

  As the sliding portion 2a of the male member 2, for example, as shown in FIGS. 1 and 2, when the sliding receiving portion 1a of the female member 1 has a rectangular cross section, such a sliding receiving portion is used. It is only necessary that the slidable cross section in the portion 1a is formed in a rectangular shape, and the slide receiving portion 1a of the female member 1 has a substantially elliptical cross section as shown in FIGS. In the case where the convex rib 3 is formed in the length direction, the slidable cross section in the slide receiving portion 1a is substantially elliptical and the convex rib 3 is in the length direction. It only has to be formed.

  The sliding portion 2a of the male member 2 may be hollow, although not shown, but the sliding portion 2a of the male member 2 is solid as shown in FIGS. If so, the bending rigidity can be improved, and it is preferable that the protrusions engage with the sliding receiving portion 1a of the female member 1 and the sliding portion 2a of the male member 2 as shown in FIGS. If the ribs of the shape 3 are formed in the length direction, the bending rigidity can be further improved, which is not only preferable, but also the surface area can be increased. It is preferable because the bonding force between the resin material and the dental bridge reinforcing material according to the present invention can be improved.

  At the other end of the sliding portion 2a of the male member 2, a locking portion 2b that is narrower than the width of the sliding portion 2a and has a length of 1 to 5 mm protrudes as shown in FIGS. The locking portion 2b is formed on both sides of the treatment site where the tooth is lost in cooperation with the locking portion 1b protruding from the closing portion 1ab of the sliding receiving portion 1a of the female member 1 described above. It serves to be installed and fixed in the respective cavities formed in both adjacent teeth located in the center.

  And as said female member 1 and male member 2 which comprise the dental bridge reinforcing material which concerns on this invention, if it is comprised from the material which can maintain those shapes at least, it will be especially limited. However, it is preferable that these are made of metal or hard plastic because the overall strength of the dental bridge reinforcing material according to the present invention is increased.

Next, a method of using the dental bridge reinforcing material according to the present invention having such a configuration will be described.
First, as a preparation, a dental bridge reinforcing material according to the present invention having a shape suitable for a treatment site where a tooth has been lost is prepared. For example, when the treatment site where the tooth is lost is a molar, a comparatively wide dental bridge reinforcing material according to the present invention is selected, and when the treatment site where the tooth is lost is an anterior tooth The dental bridge reinforcing material according to the present invention having a narrow target width is selected.

  Next, when the selected dental bridge reinforcing material according to the present invention is in a state where the female member 1 and the male member 2 are separated, the sliding receiving portion of the female member 1 By performing an operation of inserting one end of the sliding portion 2a of the male member 2 into the insertion port 1aa of 1a, the dental bridge reinforcing material according to the present invention is attached to the female member 1 as shown in FIGS. Preparation is made so that the male member 2 is inserted.

  After such preparation is completed, first, the respective locking portions 1b and 2b of the prepared dental bridge reinforcing material according to the present invention are attached to both adjacent teeth located on both sides of the treatment site where the patient's teeth have been lost. A treatment for forming a pair of cavities for installation and fixation is performed.

  Specifically, as shown in FIG. 6 and FIG. 7, this treatment is provided on both adjacent teeth of the treatment site where the patient's teeth have been lost by a turbine or the like, facing the treatment site (the site where the teeth have been lost) and prepared. In addition, the dental bridge reinforcing material according to the present invention is formed by forming cavities that are large enough to install the respective locking portions 1b and 2b.

  At this time, the locking portion 1b of the female member 1 of the dental bridge reinforcing material according to the present invention protrudes from the closing portion 1ab of the sliding receiving portion 1a and its width is narrower than the width of the sliding receiving portion 1a. Further, the length is 1 to 5 mm, and the locking portion 2b of the male member 2 protrudes from the other end of the sliding portion 2a and the width thereof is narrower than the width of the sliding portion 2a. Is 1 to 5 mm, so that it can be installed in a cavity that is much smaller than when using a conventional dental fiber reinforced composite material. Therefore, the cutting amount for forming a cavity in the adjacent tooth is reduced. Not only can it be very small, but the burden on the patient and operator due to the formation of a large cavity in a healthy adjacent tooth can be reduced.

Next, an operation of adjusting the length of the prepared dental bridge reinforcing material according to the present invention in the longitudinal direction so as to coincide with the distance between the cavity of both adjacent teeth formed by the above operation is performed.
Specifically, as shown in FIGS. 1 to 5, the dental bridge reinforcing material according to the present invention slides the male member 2 into the insertion port 1 aa of the sliding receiving portion 1 a of the female member 1 in advance. In a state where one end of the portion 2a is inserted, the other end of the sliding portion 2a of the male member 2 is pushed in the direction of the insertion port 1aa of the sliding receiving portion 1a of the female member 1 or is slid. By pulling and sliding the other end of the sliding portion 2a of the mold member 2 in a direction away from the insertion port 1aa of the sliding receiving portion 1a of the female mold member 1, the present invention as shown in FIGS. The length of the dental bridge reinforcing material according to the present invention in the longitudinal direction so that the respective locking portions 1b, 2b of the dental bridge reinforcing material according to the present invention can be placed in the cavity of each adjacent tooth. Is done by adjusting.

  At this time, if the dental bridge reinforcing material according to the present invention has a hole 4 penetrating through the sliding receiving portion 1a of the female member 1 as shown in FIGS. When inserting the sliding portion 2a of the male member 2 into the receiving portion 1a, or when sliding the sliding portion 2a of the male member 2 within the sliding receiving portion 1a of the female member 1, the hole 4 Since air in the slide receiving portion 1a is more released, it is preferable because the slide portion 2a can be easily inserted into the slide receiving portion 1a or the sliding portion 2a can be easily slid in the slide receiving portion 1a. .

Next, an operation of installing and fixing the dental bridge reinforcing material according to the present invention, the length of which is adjusted in the longitudinal direction by the above operation, between the cavities of both adjacent teeth of the treatment site where the tooth has been lost is performed.
This operation is performed by first filling the bottom of each cavity with a small amount of a resin material such as a hard resin or a photopolymerization hard resin, and then adjusting the longitudinal length of the dental bridge reinforcing material according to the present invention. The dental bridge reinforcing material according to the present invention is installed so that the respective locking portions 1b and 2b are embedded in the resin material filled in the bottom of each cavity, and then the resin material is irradiated with light. The dental bridge reinforcing material according to the present invention is fixed between the cavities of both adjacent teeth of the treatment site where the tooth has been lost by allowing the resin material to harden by being left standing for a while.

  At this time, the dental bridge reinforcing material according to the present invention is configured such that the sliding portion 2a of the male member 2 is slidably inserted into the sliding receiving portion 1a of the female member 1. The length in the longitudinal direction can be freely and easily changed, and one end of the sliding portion 2a of the male member 2 is inserted into the insertion port 1aa of the sliding receiving portion 1a of the female member 1 Because it is installed and fixed between the cavities of both adjacent teeth of the treatment site where the tooth has been lost in, it is cut longer than the distance between the cavities of both adjacent teeth like conventional dental fiber reinforced composites, There is no need for troublesome operations such as resin coating by immersing in resin, etc., or placing it in the gingival direction between the cavities of both adjacent teeth. Not only can it be improved, but it can also dramatically improve its rigidity and durability. That.

  Thus, after the dental bridge reinforcing material according to the present invention is installed and fixed between the cavities of both adjacent teeth of the treatment site where the tooth has been lost, the resin material such as a hard resin or a photopolymerizable hard resin is finally attached to the dental bridge reinforcing material. In the case of a hard resin, the resin material is cured automatically, and in the case of a photopolymerization hard resin, the active material is irradiated to cure the resin material. In addition, the dental bridge reinforcing material according to the present invention can be installed in a cavity that is much smaller than the conventional dental fiber reinforced composite material as described above. In addition to being able to greatly reduce the amount of cutting to form a large cavity, it is possible to reduce the burden on patients and surgeons by forming a large cavity in a healthy adjacent tooth. The dental bridge reinforcing material according to the present invention can also be used when a bridge is formed by building up a tooth shape with a resin material between the abutment teeth having a truncated cone shape.

It is an isometric view explanatory drawing which shows one Example of the dental bridge reinforcing material which concerns on this invention. It is AA sectional view explanatory drawing of FIG. It is a plane explanatory view showing other examples of a dental bridge reinforcing material concerning the present invention. FIG. 4 is a cross-sectional explanatory view taken along line BB in FIG. 3. It is CC sectional view explanatory drawing of FIG. It is a plane explanatory view showing the installation state of the dental bridge reinforcing material according to the present invention. It is front explanatory drawing of FIG.

Explanation of symbols

1 Female member
1a Sliding receiving part
1aa insertion slot
1ab obstruction
1b Locking part 2 Male member
2a Sliding part
2b Locking part 3 Convex rib 4 Hole

Claims (5)

  A hollow slide receiving portion (1a) having a flat shape in which an insertion port (1aa) is formed at one end and a closed portion (1ab) is formed at the other end, and the width is 2 to 6 mm, and the slide receiving portion ( A female member comprising a locking part (1b) projecting from the closing part (1ab) of 1a) and having a width narrower than that of the sliding receiving part (1a) and a length of 1-5 mm (1) and a sliding part (2a) having a flat shape in which one end is formed in an outer shape slidable in the sliding receiving part (1a) from the insertion port (1aa) of the female member (1) And a locking portion (2b) projecting from the other end of the sliding portion (2a) and having a width narrower than that of the sliding portion (2a) and a length of 1 to 5 mm. A dental bridge reinforcing material comprising a mold member (2).   The dental bridge reinforcing material according to claim 1, wherein the sliding part (2a) of the male member (2) is solid.   Convex ribs (3) that engage with each other are formed in the length direction on the sliding receiving portion (1a) of the female member (1) and the sliding portion (2a) of the male member (2). The dental bridge reinforcing material according to claim 1 or 2.   The dental bridge reinforcing material according to any one of claims 1 to 3, wherein a hole (4) is formed through the sliding receiving portion (1a) of the female member (1). The dental bridge reinforcing material according to any one of claims 1 to 4, which is made of metal or hard plastic.

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