JPH0591623U - Device for separating teeth and application set using the same - Google Patents

Abstract

(57) [Summary] [Structure] Functional section 2 with a triangular cross section whose cross-sectional area gradually increases.
A wedge body 1 including a grip portion 3 that is continuously provided at a rear end portion of the functional portion 2, and a ridge 4 on a ridge 4 of the wedge body 1.
And a recess or small hole for accommodating a dental material such as a dental polymerizable composition or the like, and a rod-shaped body. Dental application set consisting of an application tool provided at the tip of. [Effect] When applying a dental chemical or a dental polymerizable composition to the adjacent part of the crown, it is not necessary to fix the matrix in advance, and a space is ensured so that the adjacent tooth surfaces of the twin teeth can be sufficiently covered with the dental material. Provided is an interdental spacing device that functions so that the dental material applied to the tooth surface does not harden while in contact, and an application tool that can apply an appropriate amount of the dental material.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device used for applying a dental polymerizable composition containing a dental drug, a polymerizable (meth) acrylate or the like as a constituent component to a portion adjacent to a crown.

[0002]

[Prior Art]

 In the field of dentistry, when applying or filling a dental medicine or a polymerizable composition for dentistry (hereinafter referred to as dental materials) to the adjacent part of the crown, as a pretreatment, generally, an interdental separation method and A procedure called the septum method is performed. Various methods are used in both of these procedures, but in the case of applying dental material to the adjacent part of the crown, a wedge made of wood or plastic called a wedge and metal or plastic are used. Often used is a thin plate called a matrix. In use, the matrix is pressed against the side surface (mesial surface or distal surface) of the crown by hand, and the matrix is fixed so that it does not shift, while the space between the crown and the crown (the space between adjacent teeth) is fixed. ) To insert a wedge. The inserted wedge separates the teeth and the intimate contact between the crown and the wedge fixes the intervening matrix to the crown. Also, the fixed matrix can function as a septum because it properly retains and holds the dental material in the crown. After performing the inter-tooth separation method and the septum method, a dental material is placed on an instrument or a brush having a flat plate or a curved plate-like object called a filling device, and applied or filled in the adjacent part of the crown.

[0003]

[Problems to be solved by the device]

 When performing the interdental separation method and the septum method using a wedge and a matrix, it is necessary to insert the wedge while fixing the matrix by hand so that the matrix does not shift, and the work must be done very carefully. I won't. Particularly when it is necessary to fix the partition walls to both adjacent teeth, it is extremely difficult to fix the two matrices at the same time by hand, and a complicated operation is required. In addition, there may not be enough space to apply dental material to the tooth surface. For these reasons, sufficient dental material cannot be applied just below the most important contact point between adjacent teeth, and excess dental material often adheres to unnecessary peripheral areas.

Therefore, an object of the present invention is to apply a dental material to the apical part of the crown without requiring prior fixation of the matrix by hand, and to apply the dental material to the apical part of the crown. To provide a space between the adjacent tooth surfaces for applying the dental material, and to provide an interdental separating device that functions as a space between the teeth and as a septum so that the dental material applied to both sides does not harden while contacting. . Another object of the present invention is to provide a dental application set comprising an interdental separation tool and an applicator for dental materials suitable for use with the same.

[0005]

[Means for Solving the Problems]

 That is, according to the present invention, a triangular body having a cross section having a sequentially larger cross-sectional area is used as a functional portion, a wedge body including a grip portion continuously provided at a rear end portion of the functional portion, and one edge of the wedge body with the ridge. It is an interdental device that is composed of a thin plate-shaped matrix body that is erected substantially perpendicular to the opposing bottom surfaces. Further, according to the present invention, an applicator which is a rod-shaped body or a rod-shaped body having a flat cross section provided with a concave portion or a small hole for retaining a dental material at the tip portion is used together with the above-described interproximal appliance, and a tooth-adjacent part is provided. It is possible to provide an application set for applying dental material to the.

[0006] It is preferable that there are several types of interproximal instruments having different sizes and shapes so that the size can be appropriately selected according to the applied interproximal portion, but the functional part in the wedge body The size of the triangular cross section is 1 to 5 mm on one side, and the length of the triangular cross section is about 3 to 20 mm. Further, the triangle is basically a triangular cross-section whose cross-sectional area gradually increases so that it can be inserted into the interdental space, but it has an arcuate shape or a stepwise inclination in the length direction. The functional part makes insertion into the interdental space easier. Therefore, the ridgeline of the wedge body may be either linear or curved. Further, the wedge body needs not only a functional portion but also a grip portion for holding the device, and is connected to the rear end portion of the functional portion so that it can be easily gripped by pliers or the like. The shape may be a triangular cross-section similar to that of the functional portion, and there is no particular limitation on the shape such as a polygonal cross-section, a circular cross-section, or a plate-like body.

As the material, commonly used wood such as orange and hickory, plastic, or ceramics can be used. Especially when a polymerizable dental material is applied to the adjacent part of the crown, When the dental composition has good releasability and is hardened by visible light, it is preferably one having appropriate transparency. Representative materials include PET, PBT, nylon, polycarbonate, polystyrene, 1,2-polybutadiene, polypropylene, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetal, polyvinyl alcohol, cellulose acetate, celluloid, ABS and other plastics. Be done.

The matrix body is a thin plate vertically erected on the entire surface of one edge of the wedge body or at least a part of the functional portion. In particular, when the dental material is applied to the adjacent part of the crown, it is preferable to set the thickness of the matrix body to about 50 micron or less in order to secure the thickness of the dental material on the tooth surface. Alternatively, if the thickness of the central part of the matrix in the length direction of the wedge body is 50 μm or less and the shape becomes along the crown shape so that it becomes thicker toward the front end and the rear end of the wedge body, application This dental material is more preferable because it flows along the shape of the matrix body and hardens to form a uniform coating of the dental material on the tooth surface. Further, the height of the matrix body is about 5 mm or less, and depending on the site to which it is applied, one of the instruments having several heights is selected, or the instrument having an excessive height is selected, and the scissors are used. The user adjusts the height by appropriately cutting with a tape.

Metals, plastics, etc. are used for the matrix body, but when a dental material is applied to the part adjacent to the crown, it has good releasability from the dental material, and the dental material is visible When it is hardened by, it is preferable to use a plastic material having appropriate transparency, and a typical material is the same as the plastic material listed for the material of the wedge body.

When removing the interdental separation device inserted in the interproximal part from the oral cavity, depending on the case, the wedge body and the matrix body may be removed together or separately. In the former case, the structure in which the wedge body and the matrix body are integrated is preferable, and in the latter case, the structure in which the wedge body and the matrix body are detachable by fitting in a groove or a hole is preferable. Furthermore, it is desirable that the boundary where the wedge body and the matrix body are joined is joined in an arc shape or a smooth curve because it fits well in the gap at the tooth root.

Next, an applicator suitable for use together with the above-described interdental separation tool will be described. The applicator is a rod-shaped body having a thickness such that it can be passed between one crown adjacent part and the matrix body by the interdental separation of the interproximal device, that is, a thickness of about 50 to 1000 microns. The tip of the rod-shaped body is provided with a recess or small hole having a depth of about 10 to 990 micron for retaining the dental material. The shape of the recess or small hole is not specified. The rod-like body has a needle-like or thin plate-like shape. It is preferable that the thin plate has a flat plate shape or a curved plate shape conforming to the shape of a crown, and a grip portion is connected to the thin plate so as to be easily inserted into the oral cavity.

The material of the applicator can be any material as long as it does not react with the dental material, and typical materials include plastics, metals, ceramics, wood chips, etc. listed in the material of the wedge body. it can.

[0013]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. 1, 2 and 3 are perspective views showing an example of an interdental separating device according to the present invention. In these drawings, a wedge body 1 is composed of a functional portion 2 and a grip portion 3, and a matrix body 6 which is erected on one edge 4 of a triangular cross-section and which is substantially perpendicular to a bottom surface 5 facing the edge 4. Have. The grip portion 3 may be a structure which is completely continuous with the functional portion 2 as shown in FIG. 1, or the grip portion 3 may be considerably larger than the functional portion 2 as shown in FIG. 2 or 3. FIG. 3 shows a structure in which the thickness of the matrix body 6 in the length direction is thin at the central portion and becomes thicker toward both end portions.

FIG. 4 and FIG. 5 are views showing a use mode of the interdental separation device of the present invention. FIG. 4 is a side sectional view showing a state in which the interdental separating device (2, 6) is inserted into the gap 9 between the two teeth 7 and 8, and FIG. 5 is a plan view thereof. As is clear from these figures, the use of the device for separating teeth according to the present invention makes it possible to secure a space for applying the dental material to the adjacent tooth surface, and to apply the fluid dental material along the matrix body there. By doing so, it is possible to fix the dental material only to the crown portion and prevent unnecessary clogging of the gap.

FIG. 6 and FIG. 7 are a plan view and a side view of an example of an applicator having a thin plate-like rod-shaped body. Inserted between the teeth is a rod-shaped body 10 having a flat cross section, and a tip 11 thereof is provided with a small hole 12 for retaining dental material. The rear end of the insertion rod is connected to an appropriate grip 13.

[0016]

[Effect of the device]

 When the device for separating teeth according to the present invention is inserted into the space between adjacent teeth, the gap between the teeth is separated by the thickness of the wedge body, and at the same time, the gingival papilla is excluded. At the same time, the matrix body is inserted into the space between adjacent teeth, the matrix body is positioned in parallel with the center of the adjacent teeth, and a space is secured for both teeth. In this state, the dental material is applied to both adjacent portions of the crown using an application tool. When applying, the dental material should be retained in the recess or small hole of the applicator so that the part is parallel to the adjacent part of the crown, but in the case of the recess, the open surface should be in the adjacent part of the crown. The appliance is inserted between the proximate part of the crown and the matrix body. After the insertion, the dental material in the recess or the small hole is brought into contact with the adjacent portion of the crown, and the dental material is applied to a necessary portion of the adjacent portion of the crown. After the dental material has been applied and the composition has hardened, the interproximal dissector is removed from the oral cavity. By inserting the interproximal separation device into the adjacent interproximal region, the crown separation method and the septum method are achieved, and by applying the dental material with the application tool, the dental material can be surely applied to the necessary portions of the adjacent tooth surfaces without excess or deficiency. The treatment can be completed without hardening while both teeth are in contact with each other due to the function of the interdental separation tool.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a device for crown dissection according to the present invention.

FIG. 2 is a perspective view showing another example of a device for crown dissection according to the present invention.

FIG. 3 is a perspective view showing another example of the dental instrument for crown dissection according to the present invention.

FIG. 4 is a side cross-sectional view illustrating a usage mode of the dental crown separating device according to the present invention.

FIG. 5 is a plan view of FIG.

FIG. 6 is a plan view showing an example of an applicator used in the present invention.

FIG. 7 is a side view of FIG.

[Explanation of symbols]

 1 wedge body 2 functional part 3 gripping part 4 one edge of triangular section 5 bottom face 6 matrix body 7, 8 tooth 9 tooth gap 10 rod-shaped body 11 rod-shaped tip 12 small hole 13 gripping portion

Claims (3)

[Scope of utility model registration request] 1. A wedge-shaped body having a functional portion having a triangular cross-section having a sequentially increasing cross-sectional area, a grip portion continuously provided at a rear end portion of the functional portion, and one ridge of the wedge-shaped body. An interproximal separation device composed of a thin plate-shaped matrix body which is erected substantially perpendicular to the opposing bottom surfaces. 2. A device for separating teeth between teeth, wherein the functional portion of the wedge body according to claim 1 has an arc shape or a stepwise inclination with respect to the length direction. 3. A set for applying a flowable dental material to an adjacent part of a crown, and the interdental separation device according to claim 1 or 2, and a recess or a small hole for retaining the dental material at the tip. A dental application set comprising an application device having a rod-shaped body or a rod-shaped body having a flat cross section.