JP3147261B2 - Occlusal force diagnostic sheet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an occlusal force diagnostic sheet used for diagnosing the occlusion of teeth using a pressure-sensitive sheet.

[0002]

2. Description of the Related Art In the field of dental care, carbon paper has been widely used for diagnosing the state of bite of a tooth. The carbon paper is inserted between the upper and lower teeth of the patient, and in this state, the patient strongly bites, thereby adhering carbon only to the portion where the upper and lower teeth contact. The dentist diagnoses the bite state of the patient from the position and area where the carbon adheres.

[0003]

However, the method using the carbon paper only detects that the upper and lower teeth are in contact with each other, and cannot detect the pressure of the teeth, that is, the occlusal force. For this reason, the occlusal force must be predicted from the state of carbon adhesion, and the diagnosis of the occlusal state is likely to be inaccurate, and it is difficult to determine a treatment policy correctly.

Further, in order to attach carbon clearly to a portion where a tooth has touched, it is necessary to apply upper and lower teeth ticking a plurality of times, or rub the jaw to the left and right to rub the carbon paper contact portion of the tooth with the tip of the tooth. Was necessary.

[0005] In addition, since the position where the tooth is in contact with the entire dental arch is unclear, the dentist must look into the oral cavity of the patient and work while checking the position of the carbon paper. For this reason, there was a problem that workability was poor.

Therefore, the applicant has proposed to detect the occlusal force using a sheet in which a wax layer is laminated on a pressure-sensitive sheet, and to detect the alignment of the teeth of the dental arch from the tooth pattern formed on the wax layer ( See Japanese Patent Application No. 4-302976).
However, in this sheet, the wax layer on the surface has viscosity, and especially when the temperature of the wax layer rises, the sheet becomes soft and sticky. For this reason, wax easily adheres to teeth,
There was a problem that handling was troublesome.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and it is possible to easily and accurately detect the condition of the alignment of the dental arch and the distribution of the occlusal force, and to accurately detect the occlusal condition. Provides an occlusal force diagnostic sheet that can obtain extremely effective data for accurate diagnosis and treatment policy determination, can be easily diagnosed for patients, and is easy for dentists to work and easy to handle The purpose is to do.

[0008]

According to the present invention, it is an object of the present invention to provide a color-developing agent in which a color developing agent is coated on one surface of a sheet-shaped synthetic resin support, and the micro-encapsulated color forming agent is further coated on the color developing agent coating layer A diagnosing sheet formed substantially in a horseshoe shape substantially along the shape of the dental arch, wherein the pressure-sensitive sheet coated with is coated with a synthetic resin back waterproof bonded to the other surface of the support with an adhesive. Layer, a transparent synthetic resin front waterproof layer directly covering the color forming agent coating layer, and laminated on at least one of the two waterproof layers.
The outer peripheral edge protrudes outside the pressure-sensitive sheet with a substantially constant width
The wax layer, a transparent synthetic resin film that is affixed to the surface of the wax layer, the outer peripheral edge of the pressure-sensitive sheet
Glued to the periphery of the wax layer protruding outward
That is achieved by the biting force diagnostic sheet; and a holder.

[0009]

DETAILED DESCRIPTION FIG. 1 is occlusal force diagnostic sheet ho for use in the present invention
Plan view showing a state in which remove the Ruda, FIG. 2 is a sectional view for showing the structure, FIG. 3 is a developed view of the holder to be attached to this sheet, FIG. 4 is an explanatory view of the assembly procedure, 5 of the holder FIG. 6 is a sectional view taken along line VI-VI in FIG.

In FIG. 2, reference numeral 10 denotes a sheet-shaped support made of synthetic resin, for example, a PET (polyethylene terephthalate) film having a thickness of 25 μm is used.
The support 10 is preferably a milky white opaque film. Reference numeral 12 denotes a developer coating layer, which is formed by applying a solution obtained by dispersing an acid clay (montmorillonite) sulfuric acid-treated product in water containing caustic soda to one surface (surface) of the support 10 and drying the solution. is there.

Reference numeral 14 denotes a color-developing agent coating layer formed on the color-developing agent coating layer 12, which is formed by dissolving a color developing agent such as 1-phenyl-1-xylylethane in oil and microencapsulating it. is there. Here, the microcapsules are adjusted to various strengths, and the microcapsules to be destroyed change according to the pressure. When the microcapsules are destroyed by the pressure, the color developing agent therein is absorbed by the color developing agent together with the oil to form a color. In this embodiment, the color is red. The color density increases almost linearly with increasing pressure.

As described above, the support 10 and the developer coating layer 1
2 and the colorant coating layer 14, and then the laminate 1
5 is cut out in a substantially horseshoe shape as shown by a broken line in FIG.
This shape is determined to substantially follow the shape of the human dental arch.

In FIG. 2, reference numeral 16 denotes a back waterproof layer,
It is formed of the same PET film as, for example, a 16 μm transparent film. An adhesive type paste is applied to one surface of the back waterproof layer 16 to form an adhesive layer 18. The back waterproof layer 16 is adhered to the back surface of the support 10 (the surface opposite to the developer application layer 12) by the adhesive layer 18.

Reference numeral 20 denotes a front waterproof layer, which is formed of a transparent PET film of 16 μm in the same manner as the back waterproof layer 16. The front waterproof layer 20 is overlaid on the color forming agent coating layer 14, and is adhered to the adhesive layer 18 of the back waterproof layer 16 along the outer periphery of the support 10. In this case, it is desirable that the pressure between the waterproof layers 16 and 20 be sufficiently reduced and evacuated.

Thus, the support 10, the developer coating layer 1
2. The laminated body 15 of the coloring agent coating layer 14 is
And glue the periphery along the outside of the horseshoe-shaped laminate 15. Then, the outer shape is cut out on the outer periphery of the laminated body 15 leaving a space where the waterproof layers 16 and 20 adhere to each other. As a result, a substantially horseshoe-shaped pressure-sensitive sheet 22 is formed. The pressure-sensitive sheet 22 is sealed by the back waterproof layer 16 and the front waterproof layer 20. For this reason, the water resistance is improved, and even if the saliva adheres in the oral cavity, there is no influence on the coloring property, and the reliability is increased.

Since one waterproof layer 16 is adhered to the back surface of the support 10, the back waterproof layer 16 does not peel off or move with respect to the support 10. Therefore, the front waterproof layer 20 whose periphery is fixed to the back waterproof layer 16 is
Will not move.

The horseshoe-shaped pressure-sensitive sheet 22 waterproofed by the waterproof layers 16 and 20 has a wax layer 24 on one side thereof.
Is formed. This wax layer 24 is made of, for example, 0.35 ± dental paraffin wax (JIS-T-6502).
It was uniformly applied to a thickness of 0.03 mm. The wax layer 24 is desirably colored in a color that is close to the color complementary to the color of the pressure-sensitive sheet 22. In this embodiment, a blue-green color is used.

A transparent synthetic resin film 25 is further adhered to the surface of the wax layer 24. As the film 25, for example, a thin flexible film having a thickness of several μm, which is commercially available as a food packaging wrap film, can be used. The film 25 is usually obtained by adding a softener such as a fatty acid derivative, a stabilizer such as an epoxidized vegetable oil, or the like to a base material such as polyvinylidene chloride.

The film 25 is directly adhered to the surface of the wax layer 24 and can be fixed by the adhesive force of the wax layer 24 itself. Note that the film 25 is formed so that its outer periphery is slightly inside the outer peripheral edge of the wax layer 24, and is desirably formed to have substantially the same outer shape as the pressure-sensitive sheet 22. In other words, the outer peripheral edge of the wax layer 24 projects slightly outward from the outer peripheral edges of the pressure-sensitive sheet 22 and the film 25. The occlusal force diagnostic sheet 26 is completed by attaching the film 25 to the wax layer 24 as described above.

The occlusal force diagnostic sheet 26 is fixed to a cardboard holder 28 as shown in FIG. As shown in FIG. 3, the holder 28 is formed by integrally forming an upper plate portion 30 and a lower plate portion 32 formed in a substantially Y-shape, and fold lines 34 provided on their base portions 30a and 32a. The upper plate portion 30 can be overlapped with the lower plate portion 32 by bending at.

The base 30 of the upper plate 30 and the lower plate 32
arm portions 30b, 32 branching bifurcated from a, 32a
“b” is curved substantially along the outer periphery of the occlusal force diagnostic sheet 26 in a substantially semicircular arc shape.

The holder 28 is fixed to the occlusal force diagnostic sheet 26 as shown in FIG. That is, the lower plate portion 32
The outer peripheral edge of the occlusal force diagnostic sheet 26 is positioned and placed on the arm 32b of the upper plate 30 and the upper plate 30 is
Wrap over. Then, the arm portion 30b of the upper plate portion 30 may be overlapped with the arm portion 32b of the lower plate portion 32 and pressed.

Since the wax layer 24 has appropriate flexibility and adhesiveness, when the peripheral edge of the occlusal force diagnostic sheet 26 is pressed between the arms 30b and 32b, the wax layer 24 flows. As shown in FIG. 6, both arms 30b, 32
b. As a result, the arms 30b and 32b are bonded to each other by the wax layer 24, and the holder 28 and the occlusal force diagnostic sheet 26 are integrated.

The occlusal force diagnostic sheet 26 is
8 is placed in the patient's open mouth by grasping the bases 30a and 32a, and is mounted so as to evenly hit the upper part of the maxillary dentition. When the patient gently bites, the pressure applied between the upper and lower teeth is applied to the wax layer 24 via the film 25, and the entire tooth profile of the dental arch is recorded as irregularities on the wax layer 24.

At this time, since the film 25 is thin and soft,
It is easily deformed following the tooth profile and does not affect the tooth profile formed on the wax layer 24. At the same time, the pressure applied between the upper and lower teeth is applied to the pressure-sensitive sheet 22, and only the portion where the pressure is applied develops a color according to the magnitude of the pressure. In this embodiment, the color is red.

The dentist can know the condition of the teeth arrangement while looking at the dental arch recorded on the wax layer 24 of the occlusal force diagnostic sheet 26. Further, the magnitude of the occlusal force can be known from the color density by using a density / pressure characteristic diagram predetermined for the pressure-sensitive sheet 22. In this way, an accurate diagnosis of the occlusion situation can be made, and a treatment policy can be correctly determined.

The arms 30b and 32 of the holder 28
The length b is desirably set short so that the occlusal force diagnostic sheet 26 does not protrude from the outer peripheral edge when the occlusal force diagnostic sheet 26 is fixed. That is, as shown in FIG. 5, the distal ends of the arm portions 30b and 32b are retracted from the distal edge 26A of the occlusal force diagnostic sheet 26.

It is desirable that the amount of retreat a be approximately 13 mm. By providing such a retreat amount a, the occlusal force diagnostic sheet 26 can be easily and reliably inserted between the back teeth of the patient.

It is desirable that the holder 28 be provided with various marks 36 and 38 as shown in FIG. For example, if a cross-shaped mark 36 is provided near the gathering portion of the arm portion 30b and the base portion 30a of the upper plate portion 30, by positioning the mark 36 near the center of the patient's front teeth, occlusal force diagnosis can be performed. It is possible to easily confirm the insertion position of the sheet 26 correctly. If a mark 38 for patient identification is attached, it is convenient for organizing and managing the occlusal force diagnostic sheet 26 after the examination.

On the other hand, it is conceivable that the bite force diagnosis sheet 26 is electrically read by a scanner, and is electrically processed to prepare diagnosis data. In this case, it is also possible to attach a mark for facilitating the correct setting of the holder 28 on the scanner. For example, a barcode 39 may be attached as shown in FIG. 3 so that the size and type of the sheet 24, the front and back, left and right, and the like can be automatically determined by a scanner. A density reference may be added based on the reading characteristics of the scanner.

If the wax layer 24 is provided on the side of the colorant coating layer 14, the uneven tooth shape of the wax layer 24 and the color image of the pressure-sensitive sheet 22 appearing in the wax removed by the tooth shape are provided. Can be overlapped, and the relative positions of the two can be easily checked.

When a wax layer is provided on the side of the support 10, the wax layer does not become a hindrance when confirming the color image of the pressure-sensitive sheet 22. This is convenient when reading the color image separately.

FIG. 7 is a sectional view of another occlusal force diagnostic sheet 26A, and FIG.
FIG. 6 is a cross-sectional view taken along a line corresponding to line VI-VI.

In this embodiment, the wax layers 24 and 24A are laminated on both surfaces of the pressure-sensitive sheet 22, and the films 25 and 25A are adhered to the surfaces thereof. According to this embodiment, the meshing of the upper and lower dentitions can be separately recorded in the wax layers 24, 24A.

In each of the above embodiments, the films 25, 25A are attached to the inside of the outer peripheral edge of the wax layers 24, 24A provided on one or both surfaces of the pressure-sensitive sheet 22, and the wax layers 24, 24A protrude from the peripheral edge. I did it. For this reason, the holder 28 can be adhesively fixed by the viscosity of the wax layers 24 and 24A.

However, in the present invention, the wax layers 24 and 24A
Using the viscosity and the adhesive together, the holder 28
It may be fixed . In this case holder 2
8 is coated with an adhesive, and the adhesive is applied to the holder 2.
8 may be assisted .

The holder 28 can be made of cardboard, but it is also possible to use a resin plate having appropriate hardness instead of cardboard. Further, the holder 28 overlaps the upper plate portion and the lower plate portions 30 , 32 as in the embodiment, and the sheet 26,
It is desirable to sandwich 26A, since both are securely fixed.

The holder separates the upper plate and the lower plate from each other.
Both may be fixed with a stapler, an adhesive, or the like, with the occlusal force diagnostic sheet interposed therebetween. Alternatively, one of the upper plate portion and the lower plate portion may be omitted, and the occlusal force diagnostic sheet may be placed and fixed by an appropriate means such as an adhesive or a stapler.

[0039]

According to the first aspect of the present invention, as described above, a wax layer is formed on at least one surface of a substantially horseshoe-shaped pressure-sensitive sheet wrapped with a waterproof layer, and the surface of the wax layer is made of a transparent synthetic material. Because it is covered with a resin film, the shape of the dental arch can be recorded as an uneven image on the wax through the film,
In addition, the position of the occlusal portion and the magnitude of the occlusal force can be known from the coloring position and the density of the pressure-sensitive sheet, respectively, and effective data for accurate diagnosis of the occlusal condition and determination of a treatment policy can be obtained.

Further, the patient can easily receive a diagnosis only by biting the occlusal pressure diagnostic sheet once, and the dentist can easily diagnose the patient by looking only at the occlusal force diagnostic sheet without continuously monitoring the patient's mouth. Work is easy.

Further, since the wax layer is covered with the film, the surface is not sticky due to the viscosity of the wax, the wax does not adhere to the teeth of the patient, and the wax is easy to handle. Again
The outer edge of the box layer is almost constant outside the pressure-sensitive sheet
The holder on the periphery of the wax layer.
Can be glued. For this reason, hold the holder
Cutting work can be performed, and workability is improved. Here is the film
A food packaging wrap film can be used (claim 2).

[Brief description of the drawings]

FIG. 1 shows a holder for an occlusal force diagnostic sheet used in the present invention.
Diagram showing the removed state

FIG. 2 is a cross-sectional view showing the structure.

FIG. 3 is an expanded view of a holder.

FIG. 4 is an explanatory view of the assembling procedure.

FIG. 5 is a diagram showing a state of a holder device.

6 is a sectional view taken along line VI-VI in FIG.

FIG. 7 is a sectional view showing another embodiment of the occlusal force diagnostic sheet.

8 is a cross-sectional view taken along the line VI-VI in FIG.

[Explanation of symbols]

22 Pressure-sensitive sheet 24, 24A Wax layer 25, 25A Film 26, 26A Occlusal force diagnostic sheet 28 Holder 30b, 32b Arm

Continuation of the front page (56) References JP-A-1-107754 (JP, A) JP-A-2-291854 (JP, A) JP-A-4-99569 (JP, A) JP-A-5-192359 (JP) JP-A-54-62692 (JP, A) JP-A-4-32710 (JP, U) JP-A-4-120714 (JP, U) JP-A-37-13098 (JP, Y1) (58) Field surveyed (Int. Cl. ⁷ , DB name) G01L 5/00 A61C 19/05

Claims (2)

(57) [Claims] 1. A pressure-sensitive sheet obtained by applying a color developing agent to one surface of a sheet-shaped synthetic resin support, and further applying a microencapsulated color forming agent on the color developing agent coating layer. An occlusal force diagnostic sheet formed substantially in the shape of a horseshoe substantially along the shape of a row bow, comprising a synthetic resin back waterproof layer adhered to the other surface of the support by an adhesive, and the coloring agent application layer. A transparent synthetic resin front waterproof layer that directly covers, and an outer peripheral edge that is laminated on at least one of the two waterproof layers and has an outer peripheral edge from the pressure-sensitive sheet
A wax layer protruding outward at a substantially constant width, a transparent synthetic resin film adhered to the surface of the wax layer, and the wax protruding outward from an outer peripheral edge of the pressure-sensitive sheet.
An occlusal force diagnostic sheet, comprising: a holder adhered to a peripheral portion of the shell layer . 2. The occlusal force diagnostic sheet according to claim 1, wherein the synthetic resin film is a food packaging wrap film.