JP2001333917A - Dental impression tray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dental impression tray which is capable of accurately obtaining a vertical dimension of occlusion, especially concurrent taking of upper and lower gingival impressions through applying pressure, without causing any burden on patients at induation when orally pressing the impression material filled in an insertion tray onto the gingiva. SOLUTION: Maxillary tray 1 and mandibular tray 2 for taking dental impressions being composed of a maxillary tray body 3 that holds the impression material to be pressed onto the maxilla and mandible for orally duplicating their dies and gingivae, a mandibular tray body 4 and belt-shaped holders 11 extending backward from the bottom 5 of the posterior part of the tray body are forming the right and left sides 6, 6 in the bottom 5 of the maxillary tray body 3 and a downward convex base 8 in the posterior part 7, in addition to the right and left sides 6, 6 in the bottom 5 of the mandibular tray body 4 and an upward convex base 8 in the posterior part 7, whereas the upward and downward convex bases 8 and 8 of the maxillary and mandibular tray bodies being adjacent to the base surfaces 9 and 9 can be integrated for oral application.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dental impression tray for holding an impression material for taking the shape of teeth and gums in the oral cavity.
In particular, the present invention relates to a dental impression tray for dentures for simultaneously collecting upper and lower molds.

[0002]

2. Description of the Related Art In dental treatment, in order to manufacture dentures, especially upper and lower dentures, teeth and gums in the oral cavity (hereinafter, referred to as "gum").
It is called "Gum". ) Type impression must be taken,
In particular, in order to improve the engagement between the prepared upper and lower dentures, it is necessary to simultaneously obtain upper and lower impressions in the oral cavity. In order to collect the impression of the gum in this manner, generally, an impression material having viscosity and fluidity and setting in a short time is placed on a dental impression tray, and the dental impression tray is inserted into the oral cavity. This is performed by pressing the impression material on the dental impression tray against the gums of the upper or lower jaw and copying the impression of the gums. As the impression material, a material obtained by kneading a powder of alginate (alginate) mixed with water at a predetermined ratio to form a rice cake, or silicone rubber or agar is used.

As shown in the figure, a conventional general dental impression tray comprises a tray body for holding an impression material and a gripping portion. The tray body is made of a semi-elliptical plate, and the outer periphery of the semi-ellipse is curved upward, and in the case of a tray for the upper jaw, the central portion of the half ellipse is convexly curved upward, and the lower jaw is used. In the case of the tray, the central part of the half-ellipse is cut out to provide a relief portion of the tongue, and the tray is formed from a tray that generally corresponds to the shape of the gums and dentition and can hold an impression material.

A large number of small through-holes are usually formed in the tray body, and when the impression material after curing is removed from the gum by the inflow and hardening of the impression material into the locking holes.
The tray body and the impression material are not separated. On the other hand, the grip portion is a strip-shaped body, and is protruded rearward and horizontally from the bottom of the tray main body. The dental impression tray shown in the figure is for the full jaw and for the upper jaw described above.

Conventionally, when a dental impression is collected using such a dental impression tray, an impression material is packed in a dental impression tray and placed on the dental impression tray, and the dental impression tray is inserted into the oral cavity, and the dental impression tray is inserted. It is necessary to press the impression material on the tray against the gums and hold the dental impression tray immobile for a predetermined period of time until the impression material hardens, usually 4-5 minutes.
However, in this case, the patient is unable to close the mouth with the mouth open, and suffers from drooling and drooping. Drooling is embarrassing and psychologically painful for female patients.

[0006] In the case of producing upper and lower dentures, conventionally, an upper tray or a lower jaw tray is separately inserted into the oral cavity to take an impression. On the other hand, the occlusal height of the upper and lower jaws is measured from outside of the face with a vernier caliper, etc.
The height of the upper and lower impressions taken with the obtained data is adjusted. This is troublesome and inefficient. Further, when the patient is strained at the time of impression collection or measurement of the occlusal height, the masseter muscle of the patient's jaw contracts and the shape of the jaw muscle changes due to distraction. Therefore, it was difficult to obtain an accurate impression of the gums, and considerable skill was required.

[0007]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and inserts the impression material on the dental impression tray into the oral cavity of a patient and presses the impression material on the gums until it is hardened until it hardens. Dental impression trays that can stand still, apply appropriate pressure without burdening the patient, and obtain an accurate occlusal height, especially dental impression trays that can simultaneously take impressions of the upper and lower gums. To provide.

[0008]

According to the first aspect of the present invention, there is provided an impression material for pressing the upper and lower teeth and gums in the oral cavity to copy the mold. An upper jaw tray and a lower jaw tray for dental impression comprising a tray body for upper jaw, a tray main body for lower jaw, and a band-shaped gripper extending rearward from the bottom side of the rear of the tray main body. A downwardly convex base is formed on the left side, right side, and rear of the bottom of the tray body, and an upwardly convex base is formed on the left side, right side, and rear of the bottom of the lower jaw tray body. The downwardly protruding table and the upwardly protruding table of the lower jaw tray main body can be disposed integrally in the oral cavity by abutting their respective table surfaces.

According to a second aspect of the present invention, in the dental impression tray according to the first aspect, the downward convex base at the bottom of the upper jaw tray main body is formed on the left side, right side, and rear of the bottom of the upper jaw tray main body. It is provided divided into three places, and the upward convex base at the bottom of the lower jaw tray main body is provided separately at three places of the left side, the right side and the rear of the bottom of the lower jaw tray main body. It is a tray for dental impression.

According to a third aspect of the present invention, in the dental impression tray according to the first aspect, the downwardly protruding base at the bottom of the upper jaw tray main body is a U-shaped convex at the left and right sides and at the rear of the upper jaw tray main body. The dental impression tray is provided on the base, and the upward convex base at the bottom of the lower jaw tray main body is provided on the U-shaped convex base at the left, right side, and rear of the lower jaw tray main body. .

According to a fourth aspect of the present invention, in the dental impression tray according to any one of the first to third aspects, the downwardly protruding base at the bottom of the upper jaw tray main body is the right and left sides and the rear portion of the upper jaw tray main body bottom. The fitting protrusion formed on the upper surface of the downwardly attaching / detaching convex base is detachably fitted into the fitting hole formed in the lower jaw tray main body bottom, and the upward convex base is located on the left and right sides of the lower jaw tray main body bottom and A dental impression tray characterized in that a fitting projection formed on a lower surface of an upwardly detachable convex base is detachably fitted into a fitting hole formed in a rear portion.

According to a fifth aspect of the present invention, in the dental impression tray according to any one of the first to fourth aspects, the grip extending rearward is detachably attached to a mounting hole formed in a rear portion of the convex base. It is a tray for dental impression characterized by being formed.

The operation of the above means will be described below. In the dental impression tray according to claim 1, a downwardly convex base is formed on the left side and the right side of the bottom of the upper jaw tray main body and the rear, and the left side and the right side of the bottom of the lower jaw tray main body and An upwardly convex base formed on the rear part, and the downwardly convex base for the upper jaw tray body and the upwardly convex base for the lower jaw tray body can be integrally disposed in the oral cavity by abutting their respective base surfaces. Therefore, when inserting the tray body for upper and lower jaws into the oral cavity at the same time for full dentures, the appropriate height is obtained by the contact of the upper and lower convex bases to obtain an accurate occlusal height in the oral cavity Can be. In particular, when the height is insufficient, the height can be easily adjusted by inserting a paraffin wax plate between the upper and lower convex bases abutting against each other. Adjusting the height can make the patient's chin easier. Furthermore, since the upper and lower jaw trays can be simultaneously put into the oral cavity to take an impression, the upper and lower impressions can be collected in a short time, which is efficient.

[0014] In the tray for dental impression according to the second aspect,
The downward convex table at the bottom of the upper jaw tray body is divided into three parts: the left side, the right side, and the rear part of the bottom of the upper jaw tray body. The upward convex table at the bottom of the lower jaw tray body is for the lower jaw. Since the tray is divided into three parts: the left side, the right side, and the rear part of the bottom of the tray body, a space is formed between the upper and lower convex bases, and there is room for moving the tongue during the impression acquisition. Yes, it is easier to breathe through the mouth and helps to breathe in the nose.

[0015] In the dental impression tray according to the third aspect,
Since the convex base is provided in a U-shape on the left and right sides and the rear of the tray body bottom, the upper and lower convex bases can be stably abutted, and an accurate bite height can be obtained in the oral cavity. Can be. In this case, in order to facilitate breathing, it is preferable to provide a breathing through hole in the U-shaped convex portion to facilitate breathing.

[0016] In the tray for dental impression according to claim 4,
The upper and lower convex bases can be detachably fitted with fitting projections provided on the upper surface of the detachable convex base in fitting holes formed on the left and right sides and the rear part of the tray body bottom, and have different heights. By preparing this, it can be replaced according to the occlusal height in the oral cavity of the patient, and the versatility is enhanced.

[0017] In the tray for dental impression according to claim 5,
The grip portion extending to the rear of the tray body is detachably formed so that it can be fitted by inserting and pushing the tip of the grip portion into a mounting hole formed in the rear portion of the convex base, and can be pulled out and pulled out. Therefore, the doctor can remove the grip and support it with his / her hand, and when the patient removes the grip and inserts it into the oral cavity, there is no obstruction when the patient tries to close the mouth. It is easy to close, thus reducing the strain on the patient's chin and consequently obtaining an accurate impression.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a combination of an upper jaw tray and a lower jaw tray of the dental impression tray of the present invention. FIG. 2 is a plan view of the dental impression tray of FIG. 1 as viewed from the side of the convex table, where (a) is a lower jaw tray and (b) is an upper jaw tray. FIG. 3 is a view of the dental impression tray of FIG. 1 as viewed from the front, in which the gripping portions are removed, (a) is the upper jaw tray main body, and (b) is the lower jaw tray main body. FIG.
FIG. 7 is a perspective view showing a combination of an upper jaw tray and a lower jaw tray of a dental impression tray according to another embodiment of the present invention. FIG. 5 is a plan view of a dental impression tray according to another embodiment viewed from the side of a convex base, wherein (a) shows a lower jaw tray and (b)
Indicates a tray for an upper jaw, and (c) indicates a detachable convex base.
FIG. 6A is a perspective view showing a state before the detachable convex table is attached to the dental impression tray, and FIG. 6B is a state after the convex table is attached. .

The dental impression tray according to the first embodiment of the present invention is used for pressing the upper and lower teeth and gums in the oral cavity to copy the mold. An upper jaw tray 1 and a lower jaw tray 2 for a dental impression tray are an upper jaw tray main body 3 and a lower jaw tray main body 4 which are dishes for holding an impression material for obtaining a mold,
These upper jaw tray body 3 or lower jaw tray body 4
And a strip-shaped grip 11 extending rearward from the bottom 5 side of each of the rear portions 7. Unlike the upper jaw tray body 3, the lower jaw tray body 4 has a tongue cavity 13 so that the tongue is located in the center so as not to be in the way. In the upper jaw tray 1, a downward convex base 8 is formed on the left side 6, the right side 6, and the rear 7 of the bottom 5 of the upper jaw tray body 3. On the other hand, in the lower jaw tray 2, an upward convex base 8 is formed on the left side 6, the right side 6, and the rear 7 of the bottom 5 of the lower jaw tray body 3. The downwardly protruding table 8 of the upper jaw tray body 3 and the upwardly protruding table 8 of the lower jaw tray body 4 can be disposed integrally in the oral cavity by abutting the respective table surfaces 9, 9 respectively. I have.

The dental impression tray according to the second embodiment of the present invention will be described. In this dental impression tray, in the dental impression tray according to the first aspect, a downward convex table 8 formed on the bottom 5 of the upper jaw tray body 3 is further provided on the left side of the bottom 5 of the upper jaw tray body 3. It is divided and provided at three places of the side part 6, the right side part 6, and the rear part 7. Furthermore, the bottom 5 of the lower jaw tray body 4
The upwardly convex base 8 is formed on the bottom part 5 of the lower jaw tray body 4 and divided into three parts: a left side part 6, a right side part 6, and a rear part 7. In this case, the space between the convex base 8 of the side part 6 and the convex base 8 of the rear part 7 is a notch 10 and is a space. Therefore, during treatment, the patient will
Since breathing can be freely performed at 0, it is not painful to use the dental impression tray for a long period of time.

The dental impression tray according to the third embodiment of the present invention will be described. In this dental impression tray, in the dental impression tray according to the first aspect, the downward convex table 8 formed on the bottom 5 of the upper jaw tray body 3 is further provided on the left and right sides of the upper jaw tray body 3 bottom 5. The U-shaped convex base 14 is formed on the parts 6, 6 and the rear part 7. Further, the upward convex table 8 of the bottom 5 of the lower jaw tray body 4 is formed as a U-shaped convex table on the left and right sides 6, 6 and the rear section 7 of the lower section 5 of the lower jaw tray body 4. In this case, if a through hole 18 for breathing is provided on the side of the U-shaped convex base 14 as shown in FIG. 4, breathing becomes easy when the dental impression tray is inserted into the oral cavity.

A dental impression tray according to a fourth embodiment of the present invention will be described. In this dental impression tray, in the dental impression tray according to any one of claims 1 to 3, the downward convex table 8 of the bottom 5 of the upper jaw tray main body 3 is provided on the bottom 5 of the upper jaw tray main body 3. A plurality of fitting holes 17 formed in the left and right side portions 6 and 6 and the rear portion 7
, 17 are removably fitted with fitting projections 16..., 16 provided on the upper surface of a downwardly attaching and detaching convex base 15, and the upwardly projecting base 8 of the lower jaw tray body bottom 4 is connected to the lower jaw tray body 4. A plurality of fitting projections 16..., 16 provided on the lower surface of an upwardly detachable convex base 15 in a plurality of fitting holes 17 formed in the left and right side portions 6, 6 and the rear portion 7 of the bottom portion 5. Are detachably fitted. Therefore, if the detachable convex bases having different heights are prepared, they can be replaced according to the occlusal height in the oral cavity of the patient, and the versatility of the dental impression tray is improved. In the case of the invention according to claim 1, such a detachable convex table is not used between the upper and lower convex tables 8, 8, but in this case, a paraffin wax plate is attached to the upper and lower convex tables 8, 8. Some height adjustment is possible by inserting in between. However, as shown in FIG. 2, even in the convex base 8 divided into three parts of the left and right side parts 6, 6 and the rear part 7, the fitting hole 1 is formed on the lower surface thereof.
7, the fitting holes 17 are provided on the upper surfaces of several sets having different sizes and sizes corresponding to the respective convex bases 8.
15 which has a fitting projection which is a dowel which engages with
Is prepared, it can be adapted to the patient at that time. As shown in FIGS. 5 and 6,
If the U-shaped detachable convex base 15 shown in (c) is prepared,
(A) and (b) the lower jaw tray 2 and the upper jaw tray 1
The occlusal height can be variously changed by preparing several types of detachable convex bases 15 having different thicknesses. FIG. 6A is a view in which a U-shaped detachable convex table 15 is to be fitted to the upper jaw tray 1 having a U-shaped convex table 14 by a fitting projection 16 in the direction of the arrow in the figure. (B) is the upper jaw tray 1 after fitting.

The dental impression tray according to the fifth embodiment of the present invention will be described. In this dental impression tray, in the dental impression tray according to any one of claims 1 to 4, the rearwardly extending gripper 11 has a distal end formed at the rear of the convex base 8. It can be inserted and fitted into a mounting hole 12 of the same size as the tip, and is detachable so that it can be removed. In this way, in the dental impression tray, when the gripper 11 is removed, the upper jaw tray main body 3 or the lower jaw tray main body 4 is used by directly grasping it with a finger. In addition, the patient can close the mouth by removing the grip portion 11 from the tray body after being attached to the oral cavity, and can lightly close the mouth until the impression material hardens, so that the masseter muscle is not strained. You can get a stable and accurate impression without pain.

The above dental impression tray is, for example, shown in FIGS.
No. 3 has a large number of locking holes 19 at appropriate positions on the tray to prevent the impression material from digging into the tray when the impression material is put on the tray.
For example, when a silicone rubber impression material is used, FIG.
No locking holes 19 are provided in the wall of the tray as shown in FIGS.

[0025]

As described above, in the dental impression tray of the present invention, the convex base is provided at the bottom of the tray body, and the height of the convex base is made variable by the detachable convex base. When dental impression trays are simultaneously attached to the oral cavity, the upper and lower impression types can be simultaneously taken accurately, and the occlusal height different for each patient can be easily adjusted. Can easily breathe, and because the holding part is detachable from the tray body, the mouth can be closed when the dental impression tray is attached to the oral cavity, so that there is no burden on the patient It has excellent effects that have never been seen before, such as obtaining an accurate impression type.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a dental impression tray of the present invention in combination with an upper jaw tray and a lower jaw tray.

FIGS. 2A and 2B are plan views of the dental impression tray of FIG. 1 as viewed from the side of a convex base, wherein FIG. 2A shows a lower jaw tray and FIG. 2B shows an upper jaw tray.

FIG. 3 is a view of the dental impression tray of FIG. 1 viewed from the front, in which a gripping portion is removed, (a) is an upper jaw tray main body, and (b) is a lower jaw tray main body.

FIG. 4 is a perspective view showing a dental impression tray according to another embodiment in combination with an upper jaw tray and a lower jaw tray.

FIG. 5 is a plan view of a dental impression tray according to another embodiment as viewed from the side of a convex base, where (a) is a lower jaw tray, (b) is an upper jaw tray, and (c) is a detachable tray. 2 shows a convex base.

6A is a perspective view showing a state before a detachable convex base is attached to a dental impression tray, and FIG. 6B is a perspective view showing a state after the convex base is mounted. .

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper jaw tray 2 Lower jaw tray 3 Upper jaw tray main body 4 Lower jaw tray main body 5 Bottom part 6 Side part 7 Rear part 8 Convex base 9 Base surface part 10 Notch part 11 Gripping part 12 Mounting hole 13 Tongue position part 14 U-shaped Convex table 15 Detachable convex table 16 Fitting protrusion 17 Fitting hole 18 Breathing through hole 19 Locking hole

Claims (5)

[Claims] 1. An upper jaw tray body and a lower jaw tray main body which hold an impression material for pressing the upper and lower jaw teeth and gums in the oral cavity and copying the mold, and a rear side of the tray main body from a bottom side to a rear side. An upper jaw tray and a lower jaw tray for dental impression comprising an elongated band-plate-like gripper, wherein a lower convex base is formed on the left side, the right side, and the rear of the bottom of the upper jaw tray body, and the lower jaw. The upper and lower portions of the upper jaw tray body and the upper and lower jaw tray body abut against each other, respectively. A dental impression tray characterized in that it can be disposed integrally in the mouth. 2. The dental impression tray according to claim 1, wherein the downwardly protruding base at the bottom of the upper jaw tray body has a left side portion, a right side portion and a rear portion of the bottom portion of the upper jaw tray body.
The upper convex base at the bottom of the lower jaw tray main body is divided into three parts: a left side part, a right side part, and a rear part of the bottom part of the lower jaw tray body. Dental impression tray. 3. The dental impression tray according to claim 1, wherein the downwardly protruding base at the bottom of the upper jaw tray main body is provided on a U-shaped convex base at the left, right, left and rear of the bottom of the upper jaw tray main body. A dental impression tray, wherein the upwardly protruding table at the bottom of the lower jaw tray body is provided on a U-shaped convex table at the left and right sides and rear of the lower jaw tray body. 4. The dental impression tray according to any one of claims 1 to 3, wherein the downwardly convex base at the bottom of the upper jaw tray body is formed on the left, right, left and rear portions of the bottom of the upper jaw tray body. The fitting projection provided on the upper surface of the downwardly attaching / detaching convex base is detachably fitted into the fitting hole of the lower jaw tray body, and the upward convex base at the bottom of the lower jaw tray main body is at the left and right sides of the bottom of the lower jaw tray main body and A dental impression tray characterized in that a fitting projection provided on the lower surface of an upwardly detachable convex base is detachably fitted into a fitting hole formed in a rear part. 5. The dental impression tray according to claim 1, wherein the grip extending rearward is detachably formed in a mounting hole formed in a rear portion of the convex base. Dental impression tray characterized by the following.