JP2020081655A - Impression tray, base tray of impression tray, and alveolar ridge height adjustment piece - Google Patents

Abstract

To provide an impression tray according to a height of an alveolar ridge of a patient with low costs.SOLUTION: An impression tray 10 includes: a base tray 10A having a bottom part 14 of which side facing a top surface of an alveolar ridge is curved in a concave shape, an alveolar ridge wall part 12 provided along an outer edge of the bottom part 14 and covering a side surface of the alveolar ridge, a low alveolar ridge wall part 12X obtained by lowering a height of a part of the alveolar ridge wall part 12, and a fitting part 40 formed in the low alveolar ridge wall part 12X; and an alveolar ridge height adjustment piece 12A having a fitted part 50 that fits to the fitting part 40 of the low alveolar ridge wall part 12X and forming the alveolar ridge wall part 12.SELECTED DRAWING: Figure 5

Description

The present invention relates to an impression tray, a base tray used for the impression tray, and a ridge height adjusting piece.

BACKGROUND ART Conventionally, in dental treatment, an impression tray is used to obtain an impression (type) of an oral mucosa when producing a denture (denture) of a patient in which all upper or lower jaw teeth are lost in the oral cavity. Usually, the impression tray has a concave portion, and an impression material such as alginate for taking an impression is piled up and held inside the concave portion. The impression tray is inserted into the oral cavity while holding the impression material, and is pushed toward the ridge of the jaw to be fitted. After a certain time has elapsed and the impression material has solidified to some extent, the impression tray is taken out of the oral cavity. In addition, the occlusal height of the patient may be obtained after taking the impression using the impression tray.

As such an impression tray, for example, Patent Document 1 discloses an impression tray used for both impression taking and occlusal height taking. In the case of Patent Document 1, when the occlusal height is obtained, only the rear end of the impression tray on the throat side is partially removed so as not to disturb the work.

Patent No. 5639159

By the way, when the impression tray is fitted for taking an impression, there is little contact of the impression tray with the tissues around the alveolar ridge such as gums, tongue, buccal mucosa, etc. Is important. This is because if the impression tray comes into strong contact with the gums, the patient feels uncomfortable and the tissue around the alveolar ridge is overly tense, making it difficult to obtain an accurate impression. In this respect, the height of the ridge varies from patient to patient.

In the case of Patent Document 1, it is possible to partially remove only the rear end of the impression tray at the time of obtaining the occlusal height, but since it is necessary to attach it at the time of obtaining the impression, There is concern that the impression tray may come into contact with the organization. In this way, conventional impression trays are not designed to correspond to the height of the ridge for each patient, so when trying to accommodate the difference in height of the ridge, the impression tray for each patient Therefore, the impression tray has a problem of high cost.

In view of the above problems, it is an object of the present invention to provide an impression tray according to the height of the ridge of the patient at low cost.

Means for solving the above problems include the following aspects.
<1> A bottom that is concavely curved on the side facing the top surface of the alveolar ridge, a curved alveolar ridge wall that is provided along the outer edge of the bottom and covers the side surface of the alveolar ridge, and one of the alveolar ridge walls Base tray having a lower jaw ridge wall portion having a lower portion, and a fitting portion formed on the lower jaw ridge wall portion, and a fitting target fitted to the fitting portion of the lower jaw ridge wall portion And a ridge height adjusting piece that forms the ridge wall portion.

According to the configuration of <1> above, an appropriate ridge height adjusting piece is selected from a plurality of ridge height adjusting pieces according to the height of the patient's ridge height, and the fitted portion is fitted to the base tray. Fit the joint. The base tray and the alveolar ridge height adjusting piece, which are fitted and integrated, can form an impression tray that fits the ridge height of a patient. That is, by preparing a plurality of ridge height adjusting pieces having different heights, an impression tray corresponding to the height of the ridge of a patient can be constructed at a low cost with one base tray.

<2> The impression tray according to <1>, wherein the lower ridge wall portion is formed in a region corresponding to a molar.

The region of the ridge corresponding to the posterior tooth is the region where the individual ridge height of the patient has the greatest individual difference. According to the configuration of <2> above, a low ridge wall part is formed in the region where the individual difference is the largest, and the ridge height adjusting piece is fitted thereto, so that a user-friendly impression tray can be formed. it can.

<3> A bottom that is concavely curved on the side facing the top surface of the alveolar ridge, a curved alveolar ridge wall that is provided along the outer edge of the bottom and covers the side surface of the alveolar ridge, and one of the alveolar ridge walls A lower jaw ridge wall portion having a lower portion, and a fitting portion formed on the lower jaw ridge wall portion, and a fitted portion that fits into the fitting portion of the lower jaw ridge wall portion. A base tray of an impression tray that forms the alveolar ridge wall portion together with the alveolar ridge height adjusting piece.

According to the configuration of <3> above, by preparing a plurality of ridge height adjusting pieces having different heights, a base tray that can configure an impression tray according to the height of the ridge of a patient at low cost is realized. it can.

<4> A bottom that is concavely curved on the side facing the top surface of the ridge, a curved ridge wall that is provided along the outer edge of the bottom and covers the side surface of the ridge, and one of the walls of the ridge Part to be fitted to the fitting part of the lower jaw ridge wall portion of the base tray, the lower jaw ridge wall portion having a lower portion, and a fitting portion formed on the lower jaw ridge wall portion And a ridge height adjusting piece of an impression tray, which forms the ridge wall portion together with the low ridge wall portion.

According to the configuration of <4> above, by preparing a plurality of ridge height adjusting pieces having different heights, it is possible to configure an impression tray according to the height of the ridge of a patient at low cost.

According to the impression tray, the base tray of the impression tray, and the ridge height adjusting piece of the impression tray according to the present invention, an impression tray corresponding to the height of the ridge of the patient can be realized at low cost.

It is a perspective view explaining the outline of composition of an impression tray (upper jaw impression tray) concerning a 1st embodiment of the present invention. It is a forehead sectional view explaining the outline of a structure in an oral cavity. It is the top view which looked at the tray for upper jaw impressions from the upper part. FIG. 4 is a sectional view taken along line 4-4 in FIG. 3. It is a top view explaining the tray for upper jaw impressions in the state where the ridge height adjustment piece was removed. (A) is a side view of the tray for maxillary impression concerning 1st Embodiment, (B) is a side view of the tray for maxillary impressions provided with the ridge height adjustment piece different from the ridge height adjustment piece of (A). It is a figure and (C) is a side view of the tray for upper jaw impressions provided with the ridge height adjusting piece further different from the ridge height adjusting piece of (A). It is a perspective view explaining the outline of the composition of the tray for impressions (tray for lower jaw impressions) concerning a 2nd embodiment of the present invention. It is the top view (bottom view) which looked at the tray for lower jaw impressions from below. FIG. 9 is a sectional view taken along line 9-9 of FIG. 8. It is a top view explaining the tray for lower jaw impressions in the state where the ridge height adjustment piece was removed. (A) is a side view of the lower jaw impression tray according to the second embodiment, and (B) is a lower jaw impression tray provided with a higher ridge height adjusting piece different from the ridge height adjusting piece of (A). It is a side view, and (C) is a side view of the tray for lower jaw impressions provided with the ridge height adjustment piece further different from the ridge height adjustment piece of (A). It is sectional drawing of the tray for lower jaw impressions which concerns on the modification of 2nd Embodiment. (A) is a side view of a lower jaw impression tray according to a modified example, and (B) is a side view of a lower jaw impression tray provided with a different ridge height adjusting piece different from the ridge height adjusting piece of (A). Yes, (C) is a side view of a lower jaw impression tray provided with a ridge height adjusting piece that is different from the ridge height adjusting piece in (A). (A) is a perspective view of a tray for an upper jaw impression according to another embodiment, and (B) is a sectional view of the tray for an upper jaw impression shown in (A) taken along the line 4-4 in FIG. 3. is there. (A) is a perspective view of a lower jaw impression tray according to another embodiment, and (B) is a sectional view of the lower jaw impression tray shown in (A) at the same position as the line 9-9 in FIG. 8. is there.

Embodiments of the present invention will be described below. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, the relationship between the thickness and the plane size in the drawings, the ratio of the thickness of each device and each member, and the like are different from the actual ones. Therefore, specific thicknesses and dimensions should be determined in consideration of the following description. Further, there are included portions in which dimensional relationships and ratios are different between the drawings.

-First embodiment-
<Upper jaw impression tray>
As shown in FIG. 1, an impression tray (upper jaw impression tray) 10 according to the first embodiment includes a base tray 10A and a ridge height adjusting piece 12A. The base tray 10A is composed of a bottom portion 14, an alveolar ridge wall portion 12 and a low ridge wall portion 12X, and is integrally formed of resin such as thermoplastic resin. As shown in FIG. 2, the maxillary impression tray 10 is fitted to the maxillary ridge 111 of the maxilla 110 and used to obtain an impression of the maxillary mucosa. The maxillary mucosa includes the mucous membrane of the maxillary ridge 111 and the mucous membrane of the palate 102.

As shown in FIG. 3, the upper impression tray 10 is bilaterally symmetrical with respect to the central axis C1. The central axis C1 is an axis parallel to the median plane of the human body, and is set so as to extend along the longitudinal direction of the bottom portion 14 (vertical direction in FIG. 3).

As shown in FIG. 1, the bottom portion 14 is curved in a convex shape on the side facing the palate because the center is raised upward. Further, the side facing the top surface of the maxillary ridge 111 around the center of the bottom portion 14 is curved in a concave shape. In addition, in the present invention, the center of the bottom portion 14 may be flat without being raised.

The ridge wall portion 12 is provided so as to stand up along the outer edge of the bottom portion 14, and is curved so as to cover the side surface of the upper ridge 111. As shown in FIG. 3, the thickness of the ridge wall part 12 is almost constant. Due to the concavely curved inner wall surface of the bottom portion 14 and the curved inner wall surface of the maxillary ridge wall portion 12, the concave portion 16 that covers the maxillary ridge 111 is configured in a U shape in a plan view.

In the first embodiment, the lower ridge wall portion 12X is provided in the region of the upper ridge wall portion 22 on the rear side, which is the side on which the posterior teeth are located, of the upper ridge 111, and the lower ridge wall portion 12X. The ridge height adjusting piece 12A is arranged on the upper part. When the upper impression tray 10 is fitted to the upper ridge 111, the ridge height adjusting piece 12A comes close to the oral mucosa on the cheek 106 side (see FIG. 2 ).

As shown in FIG. 1, in the state in which the upper jaw impression tray 10 is arranged so that the concave portion 16 of the upper jaw impression tray 10 is opened to the upper side, the upper end of the lower jaw ridge wall portion 12X is the upper ridge wall portion 12 Lower than the top of the front area. As described above, the low ridge wall part 12X in the first embodiment is set as a region in which a part of the ridge wall part 12 is lowered.

Inside the concave portion 16 in FIG. 3, regions corresponding to the respective seven teeth on the left and right of the maxillary ridge 111 are illustrated by dotted lines. Of these 7 pairs of teeth, the upper 3 front pairs in FIG. 3 are front teeth, and the lower 4 rear rear pairs in FIG. 3 are back teeth. The four pairs of back teeth are the first premolar 114, the second premolar 115, the first molar 116, and the second molar 117.

FIG. 4 is a sectional view taken along a plane orthogonal to the central axis C1. As shown in FIG. 4, the alveolar ridge height adjusting pieces 12A are symmetrically paired on the left and right, and the structures of the alveolar ridge height adjusting pieces 12A are equivalent. The ridge height adjusting piece 12A forms a part of the left and right ridge wall portions 12, and the inner wall surface of the ridge height adjusting piece 12A and the inner wall surface of the base tray 10A are smoothly continuous.

As shown in FIG. 3, the left and right alveolar ridge height adjusting pieces 12A have four back teeth including a first premolar 114, a second premolar 115, a first molar 116, and a second molar 117 in a plan view. Of the respective positions are extended laterally. That is, the maxillary ridge height adjusting piece 12A is formed in a region corresponding to all molars in the maxillary ridge 111, and is arranged so as to cover this region. Although not shown in the first embodiment, the alveolar ridge height adjusting piece 12A may be extended so as to be located in a region corresponding to the rear third molar (parent unknown) of the second molar 117. Good.

As shown in FIG. 5, a fitting part 40 is provided in the low ridge wall part 12X, and a fitted part 50 is provided in the chin height adjusting piece 12A, so that the fitting part 40 and the fitting part 40 are fitted together. The part 50 is fitted. The jaw ridge height adjusting piece 12A has a substantially rectangular shape, and is formed of a resin such as thermoplastic resin, similar to the base tray 10A.

The fitting portion 40 has a front convex portion 42, a central concave portion 44, and a rear convex portion 46. The front side convex portion 42 is a rectangular plate-like shape, and protrudes upward from the upper end of the lower jaw ridge wall portion 12X with a thickness thinner than that of the lower jaw ridge wall portion 12X at the front end of the upper portion of the lower jaw ridge wall portion 12X. It is provided.

The central recess 44 is provided at the center of the upper portion of the lower jaw ridge wall portion 12X with a depth of about half the thickness of the lower jaw ridge wall portion 12X. The shape of the space inside the central recess 44 is a rectangular plate shape. The rear convex portion 46 has a rectangular plate shape, and protrudes upward from the upper end of the low jaw ridge wall portion 12X with a thickness smaller than that of the low jaw ridge wall portion 12X at the rear end of the upper portion of the low jaw ridge wall portion 12X. Is provided.

The fitted portion 50 has a front concave portion 52, a central convex portion 54, and a rear concave portion 56. The front recess 52 is provided at the front end of the lower part of the ridge height adjusting piece 12A (a region near the low ridge wall 12X) with a depth substantially equal to the thickness of the front protrusion 42 on the base tray 10A side. The shape of the space inside the front concave portion 52 is a rectangular plate shape corresponding to the front convex portion 42.

The central convex portion 54 has a rectangular plate shape, and is provided at the center of the lower portion of the ridge height adjusting piece 12A with a thickness substantially equal to the depth of the central concave portion 44 on the base tray 10A side. The rear concave portion 56 is provided at the lower front end of the ridge height adjusting piece 12A with a depth substantially equal to the thickness of the rear convex portion 46 on the base tray 10A side. The shape of the space inside the rear concave portion 56 is a rectangular plate shape corresponding to the rear convex portion 46.

The front convex portion 42 of the base tray 10A is fitted to the front concave portion 52 of the ridge height adjusting piece 12A. Further, the central convex portion 54 of the ridge height adjusting piece 12A is fitted into the central concave portion 44 of the base tray 10A. Further, the rear convex portion 46 of the base tray 10A is fitted into the rear concave portion 56 of the ridge height adjusting piece 12A. In this way, by fitting the protrusions and the recesses that correspond to each other, the ridge height adjusting piece 12A and the base tray 10A are integrated, and the upper jaw impression tray 10 is formed. The ridge height adjusting piece 12A is detachable from the base tray 10A.

FIG. 6(A) illustrates an upper jaw impression tray 10 to which the ridge height adjusting piece 12A described in FIGS. 1 and 3 to 5 is attached. On the other hand, FIG. 6(B) illustrates an upper jaw impression tray 10 to which an alveolar ridge height adjusting piece 12B having a longer vertical length than the ridge height adjusting piece 12A in FIG. 6(A) is attached. ing. The ridge height adjusting piece 12B is provided with a fitted portion 50 equivalent to the fitted portion 50 of the ridge height adjusting piece 12A. The ridge height adjusting piece 12B is a ridge height adjusting piece 12A. Similarly to the above, the base tray 10A is detachably fitted. The height H2 of the alveolar ridge wall portion 12 of the upper jaw impression tray 10 in FIG. 6(B) is higher than the height H1 of the alveolar ridge wall portion 12 in FIG. 6(A).

Further, FIG. 6(C) illustrates an upper jaw impression tray 10 to which an alveolar ridge height adjusting piece 12C having a shorter vertical length than the alveolar ridge height adjusting piece 12A in FIG. 6(A) is attached. ing. This ridge height adjusting piece 12C is also provided with a fitted portion 50 equivalent to the fitted portion 50 of the ridge height adjusting piece 12A. The ridge height adjusting piece 12C is the ridge height adjusting piece 12A. Similarly to the above, the base tray 10A is detachably fitted. The height H3 of the alveolar ridge wall portion 12 of the upper jaw impression tray 10 in FIG. 6(C) is lower than the height H1 of the alveolar ridge wall portion 12 in FIG. 6(A).

As shown in FIGS. 6(A) to 6(C), the ridge height adjusting pieces 12A to 12C are fitted to the base tray 10A to form the ridge wall portions 12 having different heights. The heights H1 to H3 of the alveolar ridge wall portion 12 in FIG. 6 are obtained by measuring in the vertical direction with the upper jaw impression tray 10 placed on a horizontal plane.

(Effect)
According to the maxillary impression tray 10 according to the first embodiment, an appropriate alveolar ridge height adjusting piece 12A is selected from the plurality of alveolar ridge height adjusting pieces 12A to 12C in accordance with the alveolar ridge height of the patient's upper ridge 111. 12C is selected, and the fitted portion 50 is fitted to the fitting portion 40 of the base tray 10A. The base tray 10A and the ridge height adjusting pieces 12A to 12C that are fitted and integrated together can configure the upper impression tray 10 that fits the ridge height of the patient.

That is, by preparing a plurality of ridge height adjusting pieces 12A to 12C having different heights, the base tray 10A itself, which is the main body, does not need to be replaced, and only one is required, and only the ridge height adjusting pieces 12A to 12C are partially formed. The height of the impression tray 10 can be adjusted simply by exchanging it. Therefore, the upper jaw impression tray 10 according to the height of the ridge of the patient can be realized at low cost.

Further, in the first embodiment, only a partial region of the alveolar ridge wall portion 12 is replaced by the alveolar ridge height adjusting pieces 12A to 12C. In other words, of the regions of the upper impression tray 10 that cover the top surface, the inner surface, and the outer surface of the upper ridge 111, the portions that cover the top surface and the outer surface are not replaced. In this way, since the part to be replaced is limited to a partial region of the ridge wall part 12, the material of the ridge height adjusting pieces 12A to 12C prepared as parts can be reduced, and the cost and handling can be reduced. In terms of, it is more advantageous.

-Second Embodiment-
<Lower jaw impression tray>
As shown in FIG. 7, an impression tray (lower jaw impression tray) 20 according to the second embodiment includes a base tray 20A and a ridge height adjusting piece 22A. The base tray 20A is composed of a bottom portion 24, an alveolar ridge wall portion 22 and a lower ridge wall portion 22X, and is integrally formed of resin such as thermoplastic resin. The lower jaw impression tray 20 is fitted to the lower jaw ridge 121 of the lower jaw 120 (see FIG. 2) and is used to obtain an impression of the lower jaw mucosa of the lower jaw ridge 121.

As shown in FIG. 8, the lower jaw impression tray 20 is bilaterally symmetrical with respect to the central axis C2. The central axis C2 is an axis parallel to the median plane of the human body, and is set so as to extend along the longitudinal direction of the bottom portion 24 (vertical direction in FIG. 8).

The bottom 24 is V-shaped in a plan view, and the side facing the top surface of the mandibular ridge 121 is concavely curved. The ridge wall part 22 is provided so as to hang down along the V-shaped outer edge of the bottom part 24, and is curved so as to cover the side surface of the lower ridge 121. Due to the concavely curved inner wall surface of the bottom portion 24 and the curved inner wall surface of the maxillary ridge wall portion 22, the concave portion 26 covering the lower ridge 121 is configured in a V shape in a plan view.

In the second embodiment, the lower jaw ridge wall portion 22X is provided in a region of the lower jaw ridge wall portion 22 on the rear side and the inner side of the lower jaw ridge 121 where the back teeth are located. The ridge height adjusting piece 22A is arranged on the above. When the lower jaw impression tray 20 is fitted to the lower jaw ridge 121, the ridge height adjusting piece 22A comes close to the tongue 104 (see FIG. 2 ).

In the state in which the lower jaw impression tray 20 is turned upside down in the state shown in FIG. 7 and the lower jaw impression tray 20 is arranged so that the recess 26 of the lower jaw impression tray 20 opens upward, the low jaw wall 22X Is lower than the upper end of the region on the front side of the ridge wall part 22. As described above, the low ridge wall portion 22X in the second embodiment is set as a region in which a part of the ridge wall portion 22 is lowered.

Inside the recess 26 in FIG. 8, regions corresponding to the left and right teeth of the lower ridge 121 are illustrated by dotted lines. Of these 8 pairs of teeth, the upper 4 front pairs in FIG. 8 are front teeth, and the lower 4 rear pairs in FIG. 8 are back teeth. The four pairs of back teeth are a first premolar 125, a second premolar 126, a first molar 127 and a second molar 128.

FIG. 9 is a cross-sectional view taken along a plane orthogonal to the central axis C2. As shown in FIG. 9, the alveolar ridge height adjusting pieces 22A are provided symmetrically in pairs in the left and right, and the structures of the alveolar ridge height adjusting pieces 22A are equivalent. The ridge height adjusting piece 22A forms part of the left and right ridge wall portions 22, and the inner wall surface of the ridge height adjusting piece 22A and the inner wall surface of the base tray 20A are smoothly continuous.

As shown in FIG. 8, the left and right alveolar ridge height adjusting pieces 22A have four posterior teeth of the first premolar 125, the second premolar 126, the first molar 127 and the second molar 128 in plan view. Of the respective positions are extended laterally. That is, the ridge height adjusting piece 22A is formed in a region corresponding to all molars in the lower ridge 121, and is arranged so as to cover this region. As in the case of the first embodiment, the alveolar ridge height adjustment piece 22A may be extended so as to be located in the region corresponding to the third molar (parent unknown) on the rear side of the second molar 128.

As shown in FIG. 10, a fitting part 60 is provided in the low ridge wall part 22X, and a fitted part 70 is provided in the chin height adjusting piece 22A, so that the fitting part 60 and the fitted part 60 are fitted together. The part 70 is fitted. The jaw ridge height adjusting piece 22A has a substantially rectangular shape, and is formed of a resin such as thermoplastic resin, like the base tray 20A.

The fitting portion 60 has a front convex portion 62, a central concave portion 64, and a rear convex portion 66. The front convex portion 62, the central concave portion 64 and the rear convex portion 66 of the fitting portion 60 of the second embodiment are the front convex portion 42, the central concave portion 44 and the rear convex portion 46 of the fitting portion 40 of the first embodiment. Since they have the same configuration, the duplicated description will be omitted.

The fitted portion 70 has a front concave portion 72, a central convex portion 74, and a rear concave portion 76. The front concave portion 72, the central convex portion 74, and the rear concave portion 76 of the fitted portion 70 of the second embodiment are the front concave portion 52, the central convex portion 54, and the rear concave portion 56 of the fitted portion 50 of the first embodiment. Since they have the same configuration, the duplicated description will be omitted.

Also in the second embodiment, by fitting the convex portions and the concave portions corresponding to each other, the ridge height adjusting piece 22A and the base tray 20A are integrated, and the lower jaw impression tray 20 is formed. The ridge height adjusting piece 22A is detachable from the base tray 20A.

FIG. 11(A) illustrates the lower jaw impression tray 20 to which the alveolar ridge height adjusting piece 22A described in FIGS. 7 to 10 is attached. On the other hand, FIG. 11(B) exemplifies a lower jaw impression tray 20 to which an alveolar ridge height adjusting piece 22B having a longer vertical length than the alveolar ridge height adjusting piece 22A in FIG. 11(A) is attached. ing. This ridge height adjusting piece 22B is provided with a fitted portion 70 equivalent to the fitted portion 70 of the ridge height adjusting piece 22A. The ridge height adjusting piece 22B is a ridge height adjusting piece 22A. Similarly to the above, the base tray 20A is detachably fitted. The height H5 of the alveolar ridge wall portion 22 of the lower jaw impression tray 20 in FIG. 11(B) is higher than the height H4 of the alveolar ridge wall portion 22 in FIG. 11(A).

In addition, in FIG. 11C, a lower jaw impression tray 20 to which an alveolar ridge height adjusting piece 22C having a shorter vertical length than the ridge height adjusting piece 22A in FIG. 11A is attached is illustrated. ing. This ridge height adjusting piece 22C is also provided with a fitted portion 70 equivalent to the fitted portion 70 of the ridge height adjusting piece 22A. The ridge height adjusting piece 22C is the ridge height adjusting piece 22A. Similarly to the above, the base tray 20A is detachably fitted. The height H6 of the alveolar ridge wall portion 22 of the lower jaw impression tray 20 in FIG. 11C is lower than the height H4 of the alveolar ridge wall portion 22 in FIG. 11A.

As shown in FIGS. 11A to 11C, the ridge height adjusting pieces 22A to 22C are fitted to the base tray 20A to form ridge wall portions 22 having different heights. The heights H4 to H6 of the alveolar ridge wall portion 22 in FIG. 11 are measured in the vertical direction in a state where the lower jaw impression trays 20 are fitted to the lower alveolar ridge 121 whose top surfaces are horizontally aligned. Has been obtained. However, for example, the lower jaw impression tray 20 may be obtained by measuring the length in the vertical direction in a state where the lower jaw impression tray 20 is placed on a horizontal plane with the bottom 24 side facing down so that the recess 26 opens upward.

(Effect)
According to the lower jaw impression tray 20 according to the second embodiment, an appropriate ridge height adjusting piece 22A is selected from the plurality of ridge height adjusting pieces 22A to 22C according to the height of the lower ridge 121 of the patient. 22C is selected, and the fitted portion 70 is fitted to the fitting portion 60 of the base tray 20A. The base tray 20A and the ridge height adjusting pieces 22A to 22C that are fitted and integrated together can configure the lower jaw impression tray 20 that fits the ridge height of the patient. Therefore, as in the case of the first embodiment, the maxillary impression tray 10 according to the height of the ridge of the patient can be realized at low cost. Other effects of the lower jaw impression tray 20 according to the second embodiment are similar to those of the first embodiment.

<Modification>
In the mandibular impression tray 20 shown in FIGS. 7 to 11, the low ridge wall portion 22X is provided in the region of the ridge wall portion 22 on the tongue 104 side. However, as shown in FIG. 12, the lower jaw ridge wall portion 22X is provided in the region of the lower ridge wall portion 22 on the rear side, which is the side where the posterior teeth are located in the lower jaw ridge 121, and the lower jaw ridge wall portion 22X. The ridge height adjusting piece 22D may be arranged on the wall portion 22X. When the lower jaw impression tray 20 according to the modified example is fitted to the lower jaw ridge 121, the ridge height adjusting piece 22D comes close to the oral mucosa on the cheek 106 side (see FIG. 2 ).

As shown in FIG. 13(A) to FIG. 13(C), in the lower jaw impression tray 20 according to the modified example, the fitting portion 80 is provided on the lower jaw wall 22X of the base tray 20A. The fitting portion 80 has a front convex portion 82, a central concave portion 84 and a rear convex portion 86. The front convex portion 82, the central concave portion 84, and the rear convex portion 86 of the fitting portion 80 of the modified example are the front convex portion 62, the central concave portion 64, and the rear convex portion 66 of the fitting portion 60 of the second embodiment, Each has the same configuration.

Further, although not shown, a fitting part is provided on the ridge height adjusting piece 22D, and the fitting part and the fitting part 80 of the base tray 20A fit together. Other configurations of the lower jaw impression tray 20 according to the modified example are the same as the members of the same name in the lower jaw impression tray 20 according to the second embodiment, and thus the duplicate description will be omitted.

The height H8 of the alveolar ridge wall portion 22 of the lower jaw impression tray 20 to which the alveolar ridge height adjusting piece 22E is attached in FIG. 13(B) is the height H8 of the alveolar ridge height adjusting piece 22D in FIG. 13(A). The height is higher than the height H7 of the ridge wall part 22. Further, the height H9 of the alveolar ridge wall portion 22 of the lower jaw impression tray 20 to which the alveolar ridge height adjusting piece 22F is attached in FIG. 13(C) is the same as that of the alveolar ridge height adjusting piece 22D in FIG. 13(A). It is lower than the height H7 of the attached ridge wall part 22.

As described above, also in the mandibular impression tray 20 in which the lower jaw wall portion 22X is provided on the cheek 106 side, the jaw height adjusting piece 22D is removed from the base tray 20A, and instead, the jaw height adjusting piece 22E or the jaw rib is used. The high adjustment piece 22F can be attached. Then, it becomes possible to correspond to the mandibular ridge 121 having a different height for each patient.

<Other embodiments>
Although the present invention has been described by the above disclosed embodiments, it should not be understood that the description and drawings forming a part of this disclosure limit the present invention. It should be considered that various alternative embodiments, examples, and operation techniques will be apparent to those skilled in the art from the present disclosure.

For example, in the upper jaw impression tray 10 of the first embodiment, the detachable ridge height adjusting piece 12A forming a part of the ridge wall portion 12 on the cheek 106 side has been described. A part may be configured to be removable. That is, the present invention can be applied not only to the alveolar ridge wall portion 12 that covers the outer side surface of the maxillary ridge 111, but also to the ridge ridge wall portion that covers the inner side surface. In the upper jaw impression tray 10, the region around the bottom portion 14 that is bulged upward corresponds to the ridge wall portion that covers the inner surface of the upper ridge 111. A part of the area around the bottom portion 14 may be detachably configured.

Further, in the lower jaw impression tray 20, low jaw wall portions 22X are provided on both sides of the jaw wall portion 22 on the cheek 106 side and the tongue 104 side, and the height of the jaw wall is adjusted in each low jaw wall portion 22X. The pieces 22A and 22D may be fitted together at the same time.

Further, like the upper jaw impression tray 11 shown in FIG. 14(A), the ridge height adjusting piece 12A1 is continuous with a part of the ridge wall portion 12 of the upper impression tray 11 and this area. May be formed over a partial region of the bottom portion 14 forming the concave portion 16. That is, the alveolar ridge height adjusting piece 12A1 is provided not only in the region of the alveolar ridge wall portion 12 on the outer edge of the maxillary impression tray 11, but also in the raised portion of the bottom portion 14 located inside the alveolar ridge wall portion 12. You may overhang. As shown in FIG. 14(B), in the raised portion of the bottom portion 14, a low ridge wall portion 12X1 that fits with the ridge height adjusting piece 12A1 is realized.

Although illustration is omitted, the height of the jaw ridge also applies to the lower jaw wall 12X1 of the upper impression tray 11 as in the fitting portion 40 of the lower jaw wall 12X of the upper impression tray 10 of the first embodiment. A fitting portion for fitting with the adjustment piece 12A1 is provided. Although not shown in the drawings, the ridge height adjusting piece 12A1 of the maxillary impression tray 11 is also provided with a fitted portion similar to the fitted portion 50 of the ridge height adjusting piece 12A of the first embodiment. Has been. In the upper jaw impression tray 11 as well, by fitting the fitting portion and the fitted portion, it is appropriate according to the height of the maxillary ridge 111 of the patient from among the plurality of ridge height adjusting pieces 12A1. The chin height adjustment piece 12A1 can be selected.

As shown in FIG. 14, in the present invention, the boundary (seam) position between the low ridge wall part 12X and the ridge height adjusting piece 12A1 is not the position of the ridge wall part 12 but the bottom part 14 side. Good. For example, the boundary may be provided at the position where the inner wall surface is the lowest in the recess 16 in FIG. 14(B). That is, the rear side portion of the upper jaw impression tray 11 is not separated over the entire left-right direction in FIG. 14B, and the bottom portion 14 or part of the ridge wall portion 12 is a low ridge wall portion. 12X1 may be left on the base tray 10A side.

Further, as shown in FIG. 15(A), in the mandibular impression tray 21 as well, the alveolar ridge height adjusting piece 22A1 is continuous with a partial region of the alveolar ridge wall part 22 and the region of the ridge ridge wall part 22. May be formed over the area of the bottom portion 24. As shown in FIG. 15(B), in the mandibular impression tray 21, a low ridge that fits with the ridge height adjusting piece 12A1 in the outer ridge wall portion 22 on the outer side that is close to the cheek 106 side in the oral cavity. The wall 12X1 is realized.

Although illustration is omitted, the lower ridge wall portion 22X1 of the lower jaw impression tray 21 has the same ridge height as the fitting portion 60 of the lower jaw ridge wall portion 22X of the lower jaw impression tray 20 of the first embodiment. A fitting portion for fitting with the adjustment piece 22A1 is provided. Further, although not shown in the drawings, a fitting part is provided on the alveolar ridge height adjusting piece 22A1 of the lower jaw impression tray 21 as in the fitted part 70 of the alveolar ridge height adjusting piece 22A of the first embodiment. Has been. Also in the lower jaw impression tray 21, by fitting the fitting portion and the fitted portion, it is appropriate according to the height of the lower ridge 121 of the patient from among the plurality of ridge height adjusting pieces 22A1. The chin height adjustment piece 22A1 can be selected.

As shown in FIG. 15, in the present invention, the boundary (seam) position between the low ridge wall part 22X and the ridge height adjusting piece 22A1 is not limited to the position of the inner ridge wall part 12 on the inner side, but on the outer side. It may be the position of the ridge wall part 12. Further, the boundary may be provided on the bottom 14 side, for example, at the position where the inner wall surface is highest in the recess 26 in FIG. 15(B). That is, the rear part of the lower jaw impression tray 21 is not separated over the entire left-right direction in FIG. 15B, and the bottom part 24 or part of the ridge wall part 22 is a low ridge wall part. 22X1 may be left on the base tray 20A side.

Moreover, you may combine the structure of each tray for impressions shown in FIGS. For example, the upper jaw impression tray 10 and the lower jaw impression tray 20 can form an impression tray set (10, 20). Further, the upper jaw impression tray 10 and the lower jaw impression tray 20 can be included in the present invention even if they are independent of each other.

Further, the base tray 10A of the upper jaw impression tray 10 and the base tray 20A of the lower jaw impression tray 20 as components may be included in the present invention. Further, the alveolar ridge height adjusting pieces 12A to 12C of the upper jaw impression tray 10 and the alveolar ridge height adjusting pieces 22A to 22F of the lower jaw impression tray 20 as components can be included in the present invention, respectively.

As described above, the present invention includes various embodiments and the like not described above, and the technical scope of the present invention is defined only by the matters specifying the invention in the scope of claims appropriate from the above description. Is.

10 Impression tray (upper jaw impression tray)
10A Base tray 11 Impression tray (upper jaw impression tray)
12 ridge wall 12A, 12A1, 12B, 12C ridge height adjusting pieces 12X, 12X1 low ridge wall 14 bottom 20 impression tray (lower jaw impression tray)
20A Base tray 21 Impression tray (lower jaw impression tray)
22 ridge wall parts 22A, 22A1, 22B, 22C, 22D, 22E, 22F ridge height adjusting pieces 22X, 22X1 low ridge wall part 24 bottom part 40 fitting part 50 fitted part 60 fitting part 70 fitted Part 80 Fitting part 111 Upper ridge 114,115 Premolar 116,117 Molar 121 Lower ridge 125,126 Premolar 127,128 Molar

Claims (4)

The bottom facing the top surface of the alveolar ridge is curved concavely, the curved alveolar ridge wall part provided along the outer edge of the bottom and covering the side surface of the alveolar ridge, and a part of the alveolar ridge wall part is lowered. A base tray having a lower jaw wall portion and a fitting portion formed on the lower jaw wall portion,
An alveolar ridge height adjusting piece that has a fitted part that fits into the fitting part of the low ridge wall part, and forms the alveolar wall part
Impression tray with. The lower jaw ridge wall is formed in a region corresponding to a molar,
The impression tray according to claim 1. The bottom that is concavely curved on the side facing the top surface of the ridge,
A curved ridge wall portion provided along the outer edge of the bottom portion and covering the side surface of the ridge,
A lower jaw ridge wall part in which a part of the ridge wall part is lowered,
A fitting portion formed on the lower jaw ridge wall portion,
A base tray for an impression tray, which forms the alveolar ridge wall portion together with the alveolar ridge height adjusting piece having a fitted portion that fits into the fitting portion of the lower ridge wall portion. The bottom facing the top surface of the alveolar ridge is curved concavely, the curved alveolar ridge wall part provided along the outer edge of the bottom and covering the side surface of the alveolar ridge, and a part of the alveolar ridge wall part is lowered. A lower jaw ridge wall portion and a fitting portion formed on the lower jaw ridge wall portion, and a fitted portion that fits into the fitting portion of the lower jaw ridge wall portion of the base tray. ,
A ridge height adjusting piece for an impression tray, which forms the ridge wall portion together with the low ridge wall portion.