JPS60198150A - Fittness control sheet of dental embedding material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dental implant fitting adjustment sheet used for selecting a dental implant and forming a buried portion of the dental implant.

In dental treatment, teeth that have deteriorated due to #1 erosion etc. are extracted, and after the tooth extraction, 9 artificial teeth are usually fitted. In this case, to attach the first artificial tooth, a method was adopted in which the carpenter tooth was supported by the teeth on both sides or one side of the tooth after the tooth was extracted. However, with this method, one artificial tooth is simply supported by leaning against other teeth, and its support is extremely unstable when chewing food or the like.

However, in recent years, methods completely different from the conventional methods described above have been researched and developed for attaching artificial teeth.

The trap was designed to provide reliable support and normal occlusal sensation.

A means for attaching such an artificial tooth will be explained with reference to the drawings.

FIGS. 1(a) to 1(c) are cross-sectional views of the vicinity of the mandibular molars. In the figure, 1 is the mandible that forms the lower jaw.

It has an alveolar bone 1a that supports the teeth and an upper edge of the alveolar bone 1b that forms the top of the alveolar bone. 2a to 2e are teeth of the lower molar region (2a to 2c of the molar region are referred to as molars, and 2d to 2e are referred to as premolars).The roots of these teeth 2a to 2e are embedded in the alveolar bone la.

This is firmly supported. 3 is each tooth 2a to 2e
This is the gingiva that covers the neck of the tooth and the upper edge of the alveolar bone 1b. 4 is the mandibular canal passing through the mandible 1.

Inside it, the dental nerves from each tooth collectively pass.

The dental nerve has the function of transmitting the pressure applied to each tooth to the brain. The mandibular canal 4 is located at a lower position quite a distance away from the tooth root in areas other than the large mouth area, but near the large mouth area, the mandibular canal 4 ascends to the brain, so it is located extremely close to the molars 2a to 2c as shown in the figure. is passing through.

By the way, if M2b, shown by the two-dot line, has deteriorated due to m-erosion or the like and is extracted, an extraction socket 5 will remain after the tooth is extracted. However, this tooth extraction socket 5 is filled within several months due to the formation of new alveolar bone 1a. By conventional means.

An artificial tooth was fitted into a replacement for the extracted tooth 2b, and the artificial tooth was supported by the teeth 2a+2c on both sides or one of them. However, the newly researched and developed methods are completely different. This method is the first
Figures (b) and (e) will be explained.

In the new method, first, an artificial hole 6 is formed in the alveolar bone 1a formed in the tooth extraction socket 5 after tooth extraction, as shown in FIG.
form. Then, an implant material 7 is inserted into this artificial hole 6.
erected. Implant N-7 is made of various materials that are compatible with living organisms and is available in various shapes and two dimensions. The illustrated implant material is made of artificial sapphire, and is formed into an inverted T-shape by a rod-shaped portion 7a and an overhanging portion 7b below the rod-shaped portion 7a. When the implant material 7 is placed upright in the artificial hole 6, the rod-shaped part 7
A considerable portion of the tip of a protrudes above the upper edge of the alveolar bone 1b. Around the implant material 7 erected in this manner.

The alveolar bone 1a is newly formed and the artificial hole 6 is filled over a period of several months, and the implant material 7 is buried in the alveolar bone la and is supported by the L-shape therein. In this state, the artificial tooth 8 is attached to the tip of the rod-shaped portion 7a of the implant material 7 protruding from the upper edge lb of the alveolar bone, as shown in FIG. 1(c). The artificial tooth 8 is attached by an appropriate method such as adhesive. Gingiva 3 is formed in the lower part of the attached artificial tooth 8 in the same way as the neck of other teeth.

Now, the artificial tooth 8 attached by such means is as follows.
It is firmly and independently supported by the implant material 7 embedded in the alveolar bone la without depending on the teeth 2a+2c on both sides thereof. or.

When you chew food, the pressure is applied to the artificial teeth 8. Implant material7. Since the sensation is transmitted to the dental nerve via the alveolar bone 1a, the sensation is exactly the same as when chewing normal food. Thus, it can be seen that the new means described above is far superior to the conventional means.

By the way, in the case of embedding the implant material 7 using the new method described above, two difficult problems are faced. 1st
The second problem is how to select an appropriate implant material 7.

The problem is how to form the artificial hole 6 without any problems. First, the first problem will be explained.

As shown in Figure 1(a), the state of the tooth after it has been extracted is as follows.

Every tooth that has been extracted is in a different state. That is.

The shape of the willow is completely different depending on the width of the gap between the teeth on both sides of the extracted tooth, the shape of the area below the neck of the teeth on both sides, whether or not there is an inclination, etc. Therefore, it is not always possible to use the illustrated inverted T-shaped implant material 7, and there are cases where such a shape cannot be used at all. Therefore, a variety of implant materials with different shapes and dimensions are prepared, and from among these implant materials.

It is necessary to select and use the most suitable one for the condition after tooth extraction. For example, if the gap on both sides after tooth extraction is narrow, a simple rod-shaped implant material should be selected.
In addition, if the interval is extremely wide, two
It is better to select an implant material that has a stepped, long overhang to ensure solid support by the alveolar bone. However, when selecting an implant material,
It is not possible to see from the outside what the condition will be after the tooth is extracted, so we have no choice but to select the approximate shape and two dimensions using X-ray photographs as clues! Most suitable shape 1
It was extremely difficult to select the dimensions of the implant material.

Next, the second problem will be explained. When forming the artificial hole 6 shown in FIG. 1(b), the most important consideration is damage to the mandibular canal 4. If this mandibular canal 4 is damaged, the sensation of chewing food etc. cannot be restored, and the patient is not only physically injured, but also suffers immeasurable pain spiritually. Therefore, when forming 9 artificial holes 6, the mandibular canal 4
Accidents that cause damage to the equipment must be strictly avoided. By the way, the position of the mandibular canal 4 is naturally not visible from the outside, so great care must be taken to form the artificial hole 6 without damaging the mandibular canal 4.

The operator had to dig the hole little by little while searching for it, and the formation of the artificial hole 6 was a difficult task for the practitioner, who was always at risk of damaging the mandibular canal 4.

The present invention has been made in view of the above circumstances, and its purpose is to solve the above-mentioned conventional problems, to enable easy selection of an appropriate implant material, and to provide a suitable implant material. To provide a fitting adjustment sheet for a dental embedding member, which can easily form an artificial hole for embedding a dental embedding member without any trouble.

In order to achieve this object, the present invention provides a scale made of an X-ray opaque material and a compatible specimen made of an X-ray opaque material having a cross-sectional shape and dimensions substantially the same as the cross-sectional shape and dimensions of the dental implant. , is characterized in that it is attached to a sheet made of X-ray transparent material υ by appropriate means.

Hereinafter, two embodiments of the present invention will be explained based on illustrated embodiments.

FIG. 2 is a plan view of a compatibility adjustment sheet for an implant material according to an embodiment of the present invention. In the figure, 10 indicates a conformity adjustment sheet. Reference numeral 11 is a transparent synthetic resin sheet that transmits X-rays, and is thinly formed. Reference numeral 12 denotes a scale made of an X-ray opaque material such as lead embedded in the sheet 11, and is configured in a grid shape with reeds, a plurality of equally spaced parallel lines, and a plurality of equally spaced parallel lines perpendicular to these parallel lines. has been done.

13 is a compatible test piece buried in the appropriate position of the sheet 11;
It is made of a shroud of radiopaque material such as lead. The conforming specimen 13 is formed to have substantially the same cross-sectional shape and dimensions as the above-mentioned implant material. Because implant materials are prepared in many different shapes and sizes for the reasons mentioned above, the matching specimens 13 are also prepared in the same number of types corresponding to these shapes and sizes.
The number of conformity adjustment sheets 10 corresponding to the number of types are also created.

The compatible specimen 13 shown in FIG. 2 is a compatible specimen corresponding to the implant material 7 shown in FIGS. 1(b) and (e).

How to use this compatibility adjustment sheet is shown in Figures 3 and 4.
This will be explained with reference to the figures.

FIG. 3 is a plan view of the X-ray film package, and FIG. 4 is a sectional view of a portion of the lower jaw. In FIG. 3, 15 indicates an X-ray film package. Reference numeral 16 indicates a package made of an opaque material that transmits X-rays, and 17 indicates a Xi-in-ilm (indicated by a broken line) housed in the package 16. The package 16 is
It is made of a synthetic resin sheet that transmits X-rays but blocks visible light, and seals the X-ray film 17 to prevent exposure of the X-ray film 17 to visible light.

Only exposure with X-rays can be carried out. Since such an X-ray film package is well known, a detailed description thereof will be omitted.

In FIG. 4, the same parts as those shown in FIGS. 1, 2, and 3 are given the same reference numerals. 19 indicates the cheek.

In preparation for embedding the implant material, X-ray photography is first performed. In this case, first, the conformity adjustment sheet 10 shown in FIG. 2 and the X-ray film package 15 shown in FIG. As shown in FIG. 4, these are placed in contact with the tooth extraction site in the oral cavity.

In this case, the conformity adjustment sheet 10 is placed on the tooth extraction site side.

The X-ray film package 15 is placed so as to be pushed toward the side.

Next, when X-rays are irradiated from the side of the cheek 19 as shown by the arrow X, an U1 image is formed on the X-ray film 17.

FIG. 5 is a plan view of the X-ray image. The X-ray image taken by the above method is as shown in FIG. For example, if this radiography is performed on the part shown in FIG. 1, the X-ray image of teeth 2a+ 2c+ 2d+
In addition to e+alveolar bone 1a+alveolar bone upper edge 1b and mandibular canal 4, scale 12 and matching specimen 13 also appear as an X-ray image at the same time.

By the way, each of these teeth, alveolar bone 1a + alveolar bone upper edge 1b,
Mandibular canal4. Scale 12. The positional relationship of the compatible specimen 13 is the same as the actual positional relationship, and.

These dimensions are proportional to actual dimensions.

Therefore, first of all, when selecting an implant material,
Considering the size of the extracted tooth and the condition of the teeth adjacent to the extracted tooth, we select several types or one type of implant material with nine dimensions that are considered appropriate.

If the above-mentioned X-ray imaging is carried out using a corresponding adjustment sheet, then based on the taken X-ray image.

It is possible to immediately judge which of the several selected types of implant materials is the optimal implant material, or whether one of the two selected types of implant materials is appropriate. Next, when forming the first artificial hole 6, since the scale 12 and the compatible specimen are shown in the X-ray image, what diameter and diameter should be used to fill the implant material corresponding to the compatible specimen. Should I form the artificial hole 6 with a certain depth?
or.

The actual length from the upper edge of the alveolar bone 1b to the mandibular canal 4 is determined by the scale 12, and the depth of the hole 6 must be such that it approaches the mandibular canal 4. Formation of the artificial hole 6 in which it is clear what will happen can be done extremely easily and quickly without paying close attention.

Incidentally, in the above embodiment, an example was shown in which a suitable adjustment sheet is constructed by embedding a scale and a compatible test piece in a transparent synthetic resin sheet.

The present invention is not limited to this, and the scale and compatible specimen may be attached or printed on a transparent synthetic resin sheet. Also, for scales and compatible specimens.

In addition to lead, thin pieces of copper, iron, etc. can also be used.

Furthermore, instead of the transparent synthetic resin sheet, sheets made of other suitable materials may be used.

Furthermore, the scale is not limited to a grid-like one,
It is possible to use only parallel lines in one direction, and various other forms, and the intervals between the lines can be set to an appropriate interval.

As described above, in the present invention, since the scale and the compatible specimen made of an X-ray opaque material are attached to the sheet made of an X-ray transparent material, it is possible to easily select an appropriate implant material. , and two artificial holes can be formed easily and quickly without damaging the mandibular canal.

[Brief explanation of the drawing]

&# 4 field / - Top view of the body, 4th
The figure is a cross-sectional view of a part of the lower jaw, and FIG. 5 is a plan view of an X-ray image. 1a... Alveolar bone + 2a to 2e... Teeth,
4... Mandibular canal, 6... Artificial hole, 7...
... Implant material, 8 ... Artificial tooth, 10
...Compatibility adjustment sheet, 11...Sheet + 12...Scale, 13...Compatible specimen 15...X-ray film packaging Body, 16...
...Packaging body. 17...XI Film Paralysis 1 time 41st

Claims (1)

[Claims] 1. A sheet made of an X-ray transparent material, a scale made of an X-ray opaque material provided on this sheet, and a cross-sectional shape and dimensions of a dental implant provided on the sheet. A compatibility adjustment sheet 2 for a dental buried component, characterized in that it is composed of a compatibility test piece made of an X-ray opaque material formed to have almost the same shape and dimensions as , the scale and the compatible test piece are embedded in the sheet, compatibility adjustment sheet 3 for a dental buried component; , a compatibility adjustment sheet 4 for a dental buried component, which is printed on the sheet. In claim 1, the scale and the compatibility test piece are affixed to the sheet. Compatibility adjustment sheet for dental implant components featuring