JPH0489047A - Dental articulation testing sheet - Google Patents

Abstract

PURPOSE:To surely adjust articulation by using pressure-sensitive paper or a pressure-sensitive film. CONSTITUTION:Pressure-sensitive paper or a pressure-sensitive film is used for an articulation testing sheet 1 to know the portion where excessive articulation pressure is applied by dentures 2a, 2b and its size, i.e., articulation correction portion and its quantity, by color development or coloring. When the articulation testing sheet 1 is bitten by the dentures 2a, 2b, the color development portion of the articulation testing sheet 1 is limited to the portion with large articulation pressure, i.e., the portion where the dentures 2a, 2b are most protruded. The contrast is clear. The portion where the dentures 2a, 2b are most protruded can be specified easily and correctly. The cutting work of an early contact section can correctly be performed, and articulation can surely be adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a dental occlusion test sheet for examining the occlusal state of dentures and the like.

(Prior Art) Conventionally, occlusal inspection wax has been used as a means of examining the occlusal state of teeth. This occlusal examination wax is formed into a thin plate, has plasticity, and is colored anti-transparent.

The occlusal state of the teeth can be measured by biting the occlusal test wax between the upper and lower teeth to plastically deform it, and directly observing the unevenness of the resulting deformed area, or by observing the difference in wall thickness of the deformed area. Since the light transmittance varies depending on the color, this difference is transferred using a translucent device and displayed on a screen as a difference in brightness, and this is done by observing the difference in brightness.

(Problems to be Solved by the Invention) In occlusal adjustment, adjustments must be made so that equal or nearly equal occlusal pressure is generated on each of the upper and lower teeth.During occlusal adjustment, it is difficult to identify the most prominent part of the tooth. If the adjustment is not accurate, sufficient adjustment will not be possible, and the occlusal force will be concentrated on the most protruding part of the tooth, that is, the early contact area, which will overload the tooth root and not only will the occlusal purpose not be achieved. It becomes inflamed and painful and requires treatment. Therefore, accurately identifying the early contact area is very important in occlusal adjustment.

However, when wax for occlusal inspection is used, as shown by the shaded area in Fig. 3, for example, the entire area where the wax for occlusal inspection and the teeth come into contact with each other is deformed and becomes uneven, in addition to the area where the teeth directly contact each other. occurs. In addition, wax for occlusal inspection is plastically deformed and the deformed area tends to expand due to occlusal movements. Furthermore, it is difficult to accurately grasp subtle differences in wall thickness by visually observing the unevenness of wax for occlusal inspection or by visually observing differences in brightness in transparent images.

In addition, care must be taken when handling wax for occlusal testing to avoid creating irregularities other than occlusion.

Furthermore, if a transmissive device or a display device is provided, the equipment becomes expensive, and the occlusal state can only be grasped at the location where these devices are installed.

(Means for Solving the Problems) Therefore, in the invention C, pressure-sensitive paper or pressure-sensitive film is used as a dental occlusal inspection sheet.

Pressure-sensitive paper here refers to pressure-sensitive paper in a broad sense, and includes not only carbonless paper, which is pressure-sensitive paper in a narrow sense, but also paper with carbon paper sandwiched between thin sheets of paper, or a combination of back carbon paper and bottom paper, etc. 6 included.

(Function) When the occlusion test sheet is bitten, the occlusal pressure at the early contact area between the upper and lower teeth is large, and the occlusal pressure at other areas is close to zero. The occlusal test sheet only develops color in areas where occlusal pressure is high.

(Example) Example 1 FIG. 1 shows a state in which an occlusal inspection sheet according to an example of the present invention is bitten. FIG. 2 shows the test results, in which the same test object as the test object for which the test results shown in FIG. 3 were obtained using conventional wax was tested. The occlusion test sheet used for this test has a base paper basis weight of 40g/
m2, consisting of commercially available carbonless paper, which is a combination of white paper and colored blue top paper and bottom paper.

As shown in Fig. 1, the occlusal inspection sheet 1 is placed between
2b, the early contact portion 10 comes into contact and a large occlusal pressure is generated in that portion.

Then, due to the occlusal pressure, the microcapsules 5 of the color former 4 applied to the base paper 3 are broken, and the colorless dye 6 causes a chemical reaction with the color developer 8 applied to the other base paper 7.
Color development 9 can be obtained instantly. In addition, areas where the occlusal pressure was low and did not destroy the microcapsules 5 do not develop color.
In FIG. 2, the colored portion is shown by filling in black within the dotted line indicating the tooth arrangement. After the inspection, the base paper 3 and the base paper 7 are separated in order to avoid color development that may cause errors.

According to this embodiment, there is no fear that chemicals such as a color developer will adhere directly to the teeth and cause discomfort, and it is also hygienic.

Example 2 FIG. 4 is a perspective view of a dental occlusal inspection sheet according to Example 2. According to this embodiment, the occlusal inspection sheet is made by sandwiching the base paper 103 and the base paper 07 between a carbon paper 111 coated with carbon ink on both sides and a similar carbon paper 112. The edges of the sides are fastened so that they do not fall apart and can be read.

At the time of inspection, when the base paper 103 and the base paper 107 are bitten from above the carbon paper 111 and the carbon paper 1]2 with the upper and lower teeth, the carbon ink on the carbon paper 111 and the carbon paper 112 is transferred to the base paper 103 and the base paper 107 and the upper and lower teeth. , transfers to areas where the occlusal pressure is large, and the base paper 103 and the base paper 10
In No. 7, the portion corresponding to the early contact portion is colored, and the early contact portion of the upper and lower teeth is directly colored. In the case of this occlusal inspection sheet, it can also be applied to lateral alignment work such as dentures in the oral cavity. Naori-Bon Color developer and microencapsulated color former for carbonless paper may be used instead of ink.The color former is coated on the surface of the base paper, and the color former is applied to the teeth in advance. You may leave it as is.

Example 3 FIG. 5 is a perspective view of a dental occlusal inspection sheet according to Example 3. According to this embodiment, the base paper 203 and the base paper 207
A carbon paper 211 coated with carbon ink on both sides is sandwiched between the base paper 203 and base paper 207, and carbon ink 212 is coated (printed) on the surfaces of the base paper 203 and base paper 207, respectively. Embodiment 2 has the same structure as reversed carbon paper, and when this is bitten with a denture for occlusal adjustment, the carbon ink 112 is directly attached to the occlusal surface. different from. Two single-sided sheets of Naori-bon paper may be used.

Example 4 A commercially available pressure-sensitive film, such as "Prescale" manufactured by Fuji Photo Film Co., Ltd., was used as an occlusal inspection sheet.

In this case, the occlusal pressure can be easily determined by comparing the color density with a color sample or by using a densitometer.

Although a small number of embodiments have been described above, the embodiments can be varied in various ways using known techniques.

For example, for carbonless paper, not only a chemical type but also a physical type may be used. In addition, the carbonless paper or pressure-sensitive film may be self-contained paper or mono-sheet type6 in terms of structure, and the thickness, shape, size, material of the base paper, etc. Naturally, the color density and the like are changed depending on the type of colorant such as a color forming agent and a color developer, and the strength of pressure. Note that the use of carbonless paper capsule oil, etc. that contains PCBs must be avoided.

(Effects of the Invention) According to the present invention, attention is paid to the fact that the occlusal force during occlusion of the teeth is concentrated in a small part of the protrusion where the upper and lower teeth first come into contact, and the occlusal pressure in that part becomes excessive. Pressure-sensitive paper or pressure-sensitive film is used as an occlusal inspection sheet in order to determine the location and size of excessive occlusal pressure, that is, the location and amount of occlusal correction by coloring or coloring. When this occlusion test sheet is bitten with a denture or the like, the colored portion of the occlusion test sheet is limited to the part where the occlusal pressure is high, that is, the most protruding part of the denture or the like. Also, the contrast is clear. Therefore, the most protruding portion tζ of the denture or the like can be easily and accurately identified.

Therefore, by using the occlusal inspection sheet of the present invention, the lateral alignment work of the early contact area can be performed accurately, and occlusal adjustment can be performed reliably.

In addition, test results are available immediately, and the test itself is inexpensive.
There is no need for conventional expensive projection devices or display devices.

In addition, the occlusal test sheet is easy to handle because it does not easily deform and spoil test results unlike conventional wax.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the state of inspection using the occlusal inspection sheet of the present invention, and Fig. 2 is a reproduction of the test results obtained by inspecting the same test subject as that of Fig. 3 using the occlusal inspection sheet of the present invention. , FIG. 3 is a reproduction of the test results of the occlusal state using a conventional occlusal test wax, FIG. 4 is a perspective view of the second embodiment, and FIG. 5 is a perspective view of the third embodiment. 1... Occlusal inspection sheet, 2a-tooth, 2b... tooth, 3
・・Base paper, 4・-coloring agent, 5・microcapsule, 6・
- Colorless dye, 7 - Base paper, 8 - Coloring agent, 9 Coloring, carbon paper 111, carbon paper 112, carbon ink - 212゜Figure 2 Patent applicant Kataoka Shoji Co., Ltd.

Claims (1)

[Claims] A dental occlusal inspection sheet made of pressure-sensitive paper or film.