JP2001137262A - Vertically joined artificial teeth - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide joined artificial teeth with the joint between upper and lower jaws necessary for achieving alignment of the artificial teeth and sampling of occlusion as easily and quickly as possible, relating to joined artificial teeth that can be easily aligned on both the upper and lower jaws while allowing for an anatomical relation in dental field, and to provide a manufacturing method of a denture. SOLUTION: The vertically joined artificial teeth have a joint where the upper and lower teeth can be freely removably joined together, and the teeth are arranged in a dental prosthetic positional relationship when joined together.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD OF THE INVENTION

[0001] The present invention relates to an artificial tooth in which the anatomical relationship in the dental field is taken into consideration, and the maxillary and mandibular can be easily arranged. The present invention relates to a joint artificial tooth having a required upper and lower jaw joint and a method for manufacturing a denture.

[Prior art]

Conventionally, denture preparation is performed by examining and diagnosing a patient, preparing a model for an impression taking operation, preparing a base floor and an occlusal floor, obtaining a bite, selecting an artificial tooth, installing an articulator, designing, and designing an artificial tooth. Temporary arrangement of teeth, gingival formation, trial application of wax dentures to patients,
Readjustment, wax denture burial, resin polymerization, denture digging,
The articulator re-attachment, occlusion adjustment, finish polishing, trial application to the patient and the process are many complicated and require skill, so it takes a lot of time and effort, and it works aesthetically with time constraints It was difficult to prepare and provide excellent dentures to patients.

[0003] Among them, regarding the occlusal acquisition, a block-shaped wax embankment made of a conventional wax is inserted into the oral cavity to soften the wax and determine and fix it at an appropriate position both horizontally and vertically. . However, the wax embankment is very different from the actual denture, and requires a great deal of skill to soften uniformly.

[0004] Furthermore, the arrangement position of the anterior artificial teeth (the degree of protrusion and the degree of facial recovery) is recorded in the wax ridge and is an important information source when arranging the artificial teeth. In addition to the inter-distance relationship and the horizontal positional relationship, it was very skillful to determine and acquire these at once. It is a very important factor how to use the narrow space in the oral cavity effectively and efficiently to obtain the optimal anatomical index of the patient.

[0005] In the production of dentures by the conventional method, the artificial tooth arrangement performed after obtaining the occlusion is performed with reference to the above anatomical index.
The operation time was enormous because the experience of the surgeon had a great influence on the performance of the completed denture, that is, whether or not the denture could be completed.

[0006] There is no significant difference between the working process and the working time itself required for the present denture, the temporary denture, and the treatment denture, and it is necessary to spend a great deal of time when preparing several kinds of temporary dentures. there were.

[0007] In such a complicated denture manufacturing process,
In order to increase the production time, there is also a conventional artificial tooth connected with an artificial tooth.However, there is no consideration of the mating contact relationship between the upper and lower jaws, so a decisive reduction in operation time can be expected. However, there is a problem that the superiority of the connecting teeth is low.

According to the actual opening H4-25713, the first premolars, the second premolars, the first molars, and the second molars are connected by a rod-shaped object, so that the optimal occlusal relationship between the upper and lower jaws can be easily achieved. There is temporary fixed connection artificial molar.

[0009] However, it is difficult to properly position the temporary fixed artificial teeth with respect to the upper and lower occlusions.
It was difficult to quickly reproduce occlusal styles such as full-balanced occlusion and group function performed in clinical practice. Especially Ringer Rised Occlusion could not be reproduced. Further, as described in the text, the temporary fixed artificial tooth has a first premolar, a second premolar, a first molar, and a second molar connected by a rod-shaped object. After removing the bar, a great deal of adjustment had to be made.

[0010] According to Japanese Patent Application Laid-Open No. S61-272046, all artificial teeth are connected by a connecting material. By connecting all artificial teeth, an optimal occlusal relationship between the upper and lower jaws can be easily achieved. There is an artificial tooth. According to the specification, the artificial tooth for all floors has a midline support portion and a nose and hearing line support portion.

However, this artificial tooth for all floors is connected to the upper and lower anterior molars and is not suitable for use on a partial floor. Further, since the upper and lower occlusal surfaces are fixed, the occlusal surfaces cannot be observed at the time of alignment. In addition, the path of the retreat path, the front running surface and the side running surface with respect to the arrangement position can be confirmed only when the production of the denture comes to the final stage. If a problem occurs in the path of these secluded roads, the front running surface, or the side running surface, there is a complicated problem that it is necessary to restart the arrangement of the artificial teeth from the beginning.

On the other hand, in the case of arranging the teeth using a single artificial tooth, it is necessary to adjust the position and the angle of the artificial tooth with respect to the anatomical index unique to the patient, which requires skill. In addition, although a curved plate with a standard anatomical curve of the tooth is prepared as an aid when arranging artificial teeth, it is necessary to adjust again by the operator himself because the contact relationship with the artificial tooth used is not consistent Become.

[0013] One of the problems frequently encountered in the preparation of dentures in the past is that it is often pointed out that the premolars are too much on the lingual side when arranging the artificial teeth in the posterior region. In clinical cases of the edentulous jaw etc., the difficulty in arranging due to the difference in the size of the upper and lower jaws and the size of the oral cavity with individual differences have become problems. In the case of full balanced occlusion, ringerized occlusion, etc., the adjustment of the occlusal relationship is delicate, and the arrangement of the upper and lower jaws, the first premolar, the second premolar, the first molar, the second
Difficulty was required because it was greatly affected by the arrangement of molars.

Further, the types and characteristics of the artificial teeth are further limited, and the treatment is time-limited, such as in an emergency disaster, or when it is required that the patient be provided with a denture in a short time. As described above, the complicated steps and the production of the required denture as described above are difficult at present, and there has been a high demand for a denture that can be easily prepared in a very short time.

[0015]

SUMMARY OF THE INVENTION The present invention facilitates the arrangement of artificial teeth, ie, the mating contact relationship between upper and lower jaws and positional elements, which have conventionally required skill, and further reduces the time required for producing a denture. The present invention has been made for the purpose of greatly reducing the length of the artificial tooth, and an object of the present invention is to provide a joint artificial tooth that can easily and quickly supply a denture to a patient.

[0016]

SUMMARY OF THE INVENTION An upper and lower artificial tooth is provided which has a joint portion where the upper and lower artificial teeth are detachable. While the four types of upper and lower molar artificial teeth maintain the anatomical positional relationship, they have protrusions from the four types of upper molar artificial teeth and the lower molar artificial teeth, and have a support part at the protrusions. The present invention is characterized in that it has a joint portion capable of maintaining a dental prosthetic positional relationship with a lower molar artificial tooth.

As a result, the arrangement of the four types of upper molar artificial teeth and the four types of lower molar artificial teeth are joined while maintaining the dental prosthetic positional relationship, and the occlusal relationship can be maintained. It is preferable that each molar artificial tooth is articulated and articulated, and it is preferable that the artificial tooth is articulated and articulated.

The upper and lower joint artificial teeth include anterior tooth artificial teeth and molar artificial teeth. Particularly preferable are molar artificial teeth, and it is particularly preferable to use four types of molar artificial teeth. However, the number of artificial molar teeth is not limited to four, and may be connected artificial teeth, and is preferably divided into a first molar, a second molar, a first molar, and a second molar. Is better.

The support portion may be simply a connection of the protruding portions, but may be plate-shaped so as to have the same surface as the occlusal curve so as to serve as an alignment guide, and furthermore, has the same surface as the occlusal plane. Thus, it can be formed into a rod shape or a plate shape. Furthermore, the artificial teeth of the present invention can be easily arranged by attaching the support portion so as to indicate the direction of the forward and backward gliding motion on the temporal surface. The joint of the upper and lower jaw artificial teeth may be installed at any position, but is preferably provided on the protruding part or the support part.

The joint for making the upper and lower jaws detachable is as follows:
Any method can be used as long as it is a detachable joining method, but specifically, a washer fastening, a screw fastening, a pin fastening, a clip fastening, a snap fastening, or the like can be considered. Preferably, one side is provided with a through-hole and the other side is provided with a stake, and the stake is fitted by fitting the stake into the through-hole. In the stake,
It is preferable to have a mechanism that can be stopped in an anatomical positional relationship. Specifically, it is preferable to provide a locking portion. More preferably, it is desirable to have a clip-shaped mechanism that allows the upper and lower joint artificial teeth connected in an anatomical positional relationship to move in a hinged state between a fitted state and a disengaged state. In order to further firmly join, the support portion and the handle can be locked by a holder or the like. However, the upper and lower jaws
Detachable joints allow for detachable installation
If the method is sufficient.

In the joint portion of the artificial tooth in the present invention, the joint between the upper and lower jaws and the fitting sheath provided for fitting the upper and lower jaws in an optimal positional relationship can have a sufficient upper and lower jaw engagement relationship. Although it can be obtained, it is possible to use the holding holder of FIG. 7 as a joint, which is effective for use in the direct method. A lattice mark was provided on the handle of the mandibular artificial tooth to distinguish between the upper and lower jaws. This grid-like mark contributes to assuring when joining with the holder.

The joint provided on the artificial tooth according to the present invention can be constituted by a pile and a through hole. The projecting direction of the rod-shaped connecting pile is an arbitrary length and direction in which work can be easily performed. There is no particular limitation. When using the direct method, a position that does not inhibit the movement of movable tissues such as the buccal mucosa and the tongue is desirable. Furthermore, the number of joints that can be easily attached and detached may be one, but preferably two or more. This protruding portion is provided on the buccal surface or the lingual surface of the artificial tooth according to the purpose of use, and either may be used. The handle may be provided on the support portion, and its direction may be provided in either the mesial direction or the distal direction in consideration of the direct or indirect method. In order to distinguish the upper and lower jaws, a protruding part, a support part, and a handle can be named or marked so that they can be distinguished.

[0023] The contact relationship between the upper and lower jaw molar artificial teeth in a state in which the upper and lower joint artificial teeth according to the present invention are joined is preferably at least one contact point,
In addition, the standard covering relation in normal occlusion of human being is 1m.
It is also possible to set so as to obtain a cover amount of m to 2 mm. Further, the cusp inclination from the first premolar artificial tooth to the second molar artificial tooth may be set in the range of 0 ° to 35 ° and connected to a pair of upper and lower jaws on one side.

When setting a cusp inclination angle other than 0 ° molar, the radius of curvature of the curve connecting the four cusps is preferably set to 3 inches to 5 inches. More preferably, this radius of curvature is more preferably set to a radius of 4 inches, which is considered to be easily adaptable to a living body according to Monson's theory of sphere.

In some cases, the upper and lower joint artificial teeth of the present invention
It is also possible to deform at the support part of each artificial tooth, and by performing the deformation, it is possible to obtain the necessary longitudinal adjustment curvature.

The covering relation of the artificial tooth according to the present invention is not limited to the normal occlusion described above, and the upper and lower jaw positional relations and the covering amount that can form the cross-occlusion or the over-occlusion are set.

Examples of the static dental prosthetic positional relationship of the artificial tooth according to the present invention include full balanced occlusion, group function, ringerized occlusion, and baccarized occlusion. It is desirable to prepare the settings individually. Preferably, it is ringerized occlusion. The static dental prosthetic positional relationship of the upper and lower artificial teeth according to the present invention can be made so that various kinds of occlusal relations can be reproduced by replacing either the upper artificial teeth or the lower artificial teeth.

Although there are cases in which all four types of posterior teeth are not necessary depending on the size of the ridge of the patient, the artificial teeth according to the present invention may not be timely used when the indirect method or the direct method is used. It is possible to cut and use the artificial tooth at the required site. 8 and 9 show a state where the lower second artificial tooth and the upper second artificial tooth are cut.

The cases which can be used in both the direct method and the indirect method are not limited to the denture prosthesis, and only the necessary parts are necessary for the local denture such as bilateral free ends and intermediate defects as described above. It can be used.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

(Artificial Teeth Arrangement 1 in the Complete Denture Indirect Method) On the articulator, the lower joint artificial tooth of FIG. 2 is opposed to the anatomical index recorded on the lower jaw working model, and is fixed with wax. Thereafter, the upper arch of the articulator is closed, and in this state, the upper joint artificial tooth of FIG. 1 is temporarily attached. By fitting the pile portion of FIG. 6 of the upper joint artificial tooth of FIG. 1 into the through-hole of FIG. 6 of the lower joint artificial tooth, the optimal upper and lower jaw fitting contact relationship shown in FIG. 5 can be obtained. After temporary attachment with wax, the protruding part of each of the upper and lower joint artificial teeth is cut, the articulator is opened, the positional relationship of the artificial teeth with respect to the anatomical index is confirmed, and the artificial teeth are fixed. (Artificial Teeth Arrangement 2 in the Complete Denture Indirect Method) The lower joint artificial tooth of FIG. 10-h is opposed to the anatomical index recorded on the mandibular working model on the articulator and fixed with wax. At the time of fixing, it may be joined with the upper joint artificial tooth. Thereafter, the upper arch of the articulator is closed, and in this state, the upper joint artificial tooth of FIG. 10G is temporarily attached. FIG. 12 shows the optimal joint shown in FIG.
The upper and lower fitting contact relationship shown in FIG. After temporary attachment with wax, the protruding part of each of the upper and lower joint artificial teeth is cut, the articulator is opened, the positional relationship of the artificial teeth with respect to the anatomical index is confirmed, and the artificial teeth are fixed.

When the lower artificial tooth is fixed by the indirect method of the complete denture, an alignment aid having a radius of 4 inches is attached to the upper arch of the articulator. By closing the upper arch slowly so that the cusps come into contact, it is possible to determine the position of the lower joint artificial tooth more accurately and simply.

The upper and lower jaw fitting contact relation in FIG. 5 is a sectional view of the artificial tooth at the first molar part. An optimal and stable contact relationship is similarly obtained on other occlusal surfaces of artificial teeth,
The joint shown in FIG. 6 provided on the upper and lower jaw connecting teeth maintains the contact firmly and is easy to attach and detach.

The positions of the protruding portions and the supporting portions in the artificial tooth of the present invention used in the indirect method are preferably provided on the buccal side in consideration of workability. Furthermore, by providing the handle in the distal direction, the position of the front tooth artificial tooth is not hindered.

(Artificial Dental Arrangement in the Complete Denture Direct Method) In the direct method according to the embodiment of the present invention, an immediate temporary denture is mainly used. In the oral cavity, the patient-specific artificial tooth arrangement position is first recorded from the anatomical indentation on the resin plate serving as a temporary bed, and the lower joint artificial tooth is vertically illuminated while determining the occlusal plane with reference to the index. Fix with polymer resin paste. Thereafter, a photopolymerization resin paste is laid on the base surface of the upper joint artificial tooth, and is mounted in the oral cavity together with a plate serving as a temporary bed of the upper jaw.

After confirming that the provisional bed of each of the upper and lower ridges conforms to the upper and lower jaw ridges in the oral cavity, the jaw is closed while the patient's jaw distance is slowly determined, and the photopolymerizable resin paste is temporarily applied at an arbitrary position. Polymerize. After that, it was taken out of the oral cavity with the upper and lower jaw mass, the protruding part was cut, and the front artificial tooth part was arranged,
Gingival part is formed and completed.

[0036]

In the process of manufacturing a denture, the artificial tooth arrangement can be simplified, the working time can be greatly shortened, and the denture can be easily manufactured by adjusting and determining the occlusal height, that is, the intermaxillary distance directly in the oral cavity. . Further, provision of a temporary immediate emergency denture in the event of a disaster or during a normal course of treatment is possible.

[Brief description of the drawings]

FIG. 1 is an occlusal view of an upper joint molar artificial tooth of the present invention.

FIG. 2 is an occlusal view of a lower joint artificial tooth of the present invention.

FIG. 3 is a side view of the tongue of the upper joint artificial tooth of the present invention.

FIG. 4 is a side view of the tongue of the lower joint artificial tooth of the present invention.

FIG. 5 is a cross-sectional view of an upper and lower joint artificial tooth fitting according to the present invention.

FIG. 6 is an upper and lower joint artificial tooth joint of the present invention.

FIG. 7 is a holder for maintaining an artificial tooth according to the present invention.

FIG. 8 is an occlusal view of the upper joint artificial tooth obtained by cutting the second molar of the present invention.

FIG. 9 is an occlusal view of a lower joint artificial tooth obtained by cutting the second molar of the present invention.

FIG. 10 is a perspective view of an upper joint molar (g) and a lower joint artificial tooth (h) of the present invention.

FIG. 11 is a perspective view of the artificial molar artificial tooth of the present invention in an occluded state.

FIG. 12 is a sectional view of a joint molar artificial tooth of the present invention.

FIG. 13 is an occlusal surface view of the connected molar artificial tooth of the present invention.

[Explanation of symbols]

 a: Pile of joint b: Through hole of joint c: Handle with lower jaw grid-like mark d: Upper handle e: Upper jaw support f: Lower jaw support g: Upper jaw joint artificial tooth h …… Artificial teeth for lower jaw

Claims (3)

[Claims] An upper and lower joint artificial tooth having upper and lower artificial teeth having a detachable joint portion and being arranged in a dental prosthetic positional relationship at the time of joining. 2. The upper and lower joint artificial teeth according to claim 1, wherein the artificial teeth in which four kinds of upper molar artificial teeth are connected and the four kinds of lower molar artificial teeth are connected. Upper and lower joint artificial teeth. 3. A denture comprising a step of temporarily attaching the upper and lower joint artificial teeth according to claim 1 and 2 on a base floor while determining an occlusal height with a resin paste, and a step of arranging the front tooth artificial teeth. Production method.