JP2020054818A - Impression tray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an impression tray capable of appropriately taking an impression, in which a thin-walled portion is unlikely to occur in the impression material after taking an impression. The impression tray of the present invention is an impression tray provided with a main body 10 having an impression material filling portion Y and a handle portion 20, and teeth come into contact with the peripheral wall of the main body 10 on the inner surface of the peripheral wall of the main body 10. It is provided with a regulating protrusion to prevent it from happening. When the main body 10 is provided with the outer wall portion 11, the front side regulating protrusion 11c that prevents the front surface side of the tooth from coming into contact with the outer wall portion 11 can be provided as the regulating protrusion. When the main body 10 is provided with the inner wall portion 12, the back side regulating protrusion 12b that prevents the back surface side of the tooth from coming into contact with the inner wall portion 12 can be provided as the regulating protrusion. When the main body 10 is provided with the bottom surface portion 13, the bottom side regulating protrusion 13a for preventing the tip end side of the tooth from coming into contact with the bottom surface portion 13 can be provided as the regulating protrusion. [Selection diagram] Fig. 1

Description

  The present invention relates to an impression tray used for taking an impression.

  A mouthpiece, a decorative cover, and the like (hereinafter, these are referred to as "attachments") may be placed on the teeth for the purpose of treating the teeth and improving esthetics. In producing the attachment, an impression of a tooth of a person using the attachment (hereinafter, simply referred to as “user”) is obtained. Impression acquisition is performed by inserting an impression tray containing an impression material into the mouth of the user and pressing the impression material against the teeth of the user. As an impression tray used for taking an impression, for example, a tray provided with a plate or a stick in contact with teeth on the bottom surface of the tray is known (Patent Document 1). These plates and rods are for bringing the teeth into contact and stabilizing the tray.

JP 2014-217450 A

  In the past, impression acquisition was often performed during the treatment of teeth, but in recent years, it has also been increasingly performed during the production of attachments for the purpose of improving aesthetics. Impressions may be taken. However, in many cases, the user cannot set the impression tray in an appropriate position because the user has no experience in obtaining an impression, and the central incisors (so-called anterior teeth) are attached to the peripheral wall of the impression tray (the front surface of the central incisors). The side wall and the back side wall), the impression material was sometimes partially thinned. If a thin part occurs in the impression material after the impression is taken, the thin part deforms due to the vibration of the vibrator during the later plaster molding work, making it impossible to make an accurate model, and as a result, optimal mounting There has been a problem that it is not possible to produce an attachment with a feeling.

  The present invention has been made in view of the above circumstances, and a problem to be solved is to provide an impression tray in which a thin portion is hardly generated in an impression material when an impression is obtained, and an appropriate impression can be obtained.

  The impression tray of the present invention is an impression tray including a main body having an impression material filling portion and a handle portion, wherein a regulating protrusion is provided on an inner surface of a peripheral wall of the main body to prevent teeth from contacting the peripheral wall of the main body. It was done.

  The impression tray of the present invention is provided with a regulating projection on the inner surface of the peripheral wall of the main body to prevent teeth from contacting the peripheral wall of the main body, and the regulating projection guides the tooth to an appropriate position. At the time of acquisition, inconvenience due to the teeth contacting the peripheral wall of the impression tray is less likely to occur.

(A) and (b) are perspective views showing an example of the impression tray of the present invention. FIG. 2 is a plan view of the impression tray shown in FIGS. 2A is a sectional view taken along line aa of FIG. 2, FIG. 2B is a sectional view taken along line bb of FIG. 2, FIG. 2C is a sectional view taken along line cc of FIG. 2, and FIG. FIG. (A) is an explanatory view of the case where the central incisor contacts the outer wall portion of the impression tray without the front regulation protrusion, (b) is an operation explanatory view of the front regulation protrusion of the impression tray of the present invention, and (c) is the back regulation. Explanatory drawing when a central incisor contacts the inner wall portion of the impression tray without projections, and (d) is an operation explanatory view of the back side regulating projection of the impression tray of the present invention. (A)-(c) is explanatory drawing of the example of use of the impression tray of this invention. (A) is a front view showing an example of the impression tray of the present invention, (b) is a rear view of (a), (c) is a plan view of (a), (d) is a bottom view of (a), ( (e) is a left side view of (a), and (f) is a right side view of (a). (A) is a top perspective view showing another example of the impression tray of the present invention, and (b) is a bottom perspective view of (a). 7A is a front view of the impression tray shown in FIGS. 7A and 7B, FIG. 7B is a rear view of FIG. 7A, FIG. 7C is a plan view of FIG. 7A, and FIG. The bottom view, (e) is the left view of (a), (f) is the right view of (a).

(Embodiment)
An example of an embodiment of an impression tray of the present invention will be described with reference to the drawings. The impression tray of the present invention can be used as both an upper jaw tray and a lower jaw tray, but for convenience of explanation, a case where the impression tray is used as an upper jaw tray will be described as an example.

  1A and 1B are perspective views of the impression tray of this embodiment, and FIG. 2 is a plan view thereof. In FIGS. 1A, 1B and 2, reference numeral 10 denotes a main body, and reference numeral 20 denotes a handle. The main body 10 and the handle portion 20 are integrally formed of resin. The main body 10 is provided with an impression material filling portion Y for filling an impression material X for obtaining an impression (FIGS. 4A to 4D). The main body 10 of this embodiment has an upward U-shape in cross section including an outer wall portion 11, an inner wall portion 12, and a bottom portion 13, and an impression material filling portion Y is provided inside the outer wall portion 11, the inner wall portion 12, and the bottom portion 13. Is provided. The outer wall portion 11 is a portion located outside the tooth when set in the oral cavity, the inner wall portion 12 is a portion located inside the tooth when set in the oral cavity, and the bottom portion 13 is set in the oral cavity. At this time, it is a portion located on the tip side of the tooth (lower in the case of the upper jaw tray, upper side in the case of the lower jaw tray). The impression material filling portion Y of this embodiment can obtain at least eight impressions in total of two central incisors, two side incisors, two canines, and two first premolars. Size is secured.

  The outer wall portion 11 and the inner wall portion 12 are curved along the tooth row, and the bottom surface portion 13 is curved along the outer wall portion 11 and the inner wall portion 12. Each of the outer wall portion 11 and the inner wall portion 12 has a vertically long slit (hereinafter, the slit formed in the outer wall portion 11 is referred to as “outer wall slit 11a”, and the slit formed in the inner wall portion 12 is referred to as “inner wall slit 12a”). Plural pieces are formed at intervals. Near the center of the outer wall portion 11, there is provided a non-hole surface 11b in which the outer wall slit 11a is not formed.

  An outer vertical column portion 11d is provided between the outer wall slits 11a. The outer vertical column portion 11d is a rhombic column having a cross-sectional view, which has an inward protruding portion protruding toward the inner wall portion 12 and an outward protruding portion protruding outward. The top of the inward projection has a sharp pointed shape so that the point of contact with the tooth is small. The top of the outward projection is also sharp-pointed. By making the top of the outwardly projecting portion a sharp point, the impression material X pushed outward from the outer wall slit 11a can easily wrap around the outer vertical column portion 11d, and as a result, the impression material X and the impression tray Adhesive force is improved. By improving the adhesive force between the impression material X and the impression tray, it is possible to reduce the possibility that the impression material X remains in the oral cavity when an impression is obtained.

  An inner vertical column portion 12d is provided between the inner wall slits 12a. The inner vertical column portion 12d is a rhombic column having a cross section in cross section and having an inward protrusion protruding toward the outer wall portion 11 and an outward protrusion protruding outward. As with the inward projection of the outer vertical column 11d, the top of the inward projection of the inner vertical column 12d has a sharp pointed shape so that the point of contact with the teeth is reduced. The top of the outward projection is also sharp-pointed. By making the top of the outward projection a sharp point, the impression material X pushed outward from the inner wall slit 12a goes around the outside of the inner vertical column portion 12d, and as a result, the impression material X and the impression tray are attached. Strength improves. By improving the adhesive force between the impression material X and the impression tray, it is possible to reduce the possibility that the impression material remains in the oral cavity when an impression is obtained.

  On the inner surface of the outer wall portion 11, a regulating protrusion (hereinafter referred to as a "front-side regulating protrusion") for preventing the front side of the central incisor T (FIGS. 4A to 4D) from contacting the outer wall portion 11 at the time of taking an impression. ) 11c are provided. The front regulation protrusion 11c is provided so as to project toward the inner wall portion 12 side. The front regulation protrusion 11c is provided on the back side near the center of the outer wall portion 11, more specifically, on the front side of the central incisor T. As shown in FIG. 3A, the front regulation protrusion 11 c of this embodiment is a protrusion formed over substantially the entire length from the upper end to the lower end of the outer wall portion 11, and one vertically elongated protrusion from the inner wall portion 12 side. These are projections that look linear. The top of the front regulation protrusion 11c of this embodiment has a sharp pointed shape so that the contact point becomes small.

  In this embodiment, two front regulation protrusions 11c are provided at intervals in the width direction. The number of front regulation protrusions 11c may be more or less than two. As shown in FIG. 3A, each front regulation protrusion 11c is inclined so as to have a smaller protruding length from the upper end to the lower end so as to follow the gradient of the central incisor T. The maximum protrusion length H1 (FIG. 3A) of the front regulation protrusion 11c of this embodiment is about 3 mm. This dimension is an example, and the maximum protrusion length H1 of the front regulation protrusion 11c can be set higher or lower than 3 mm.

  Since the front regulation protrusion 11c of this embodiment has an inclined shape in which the lower side (the bottom surface 13 side) is lowered so as to follow the gradient of the central incisor T, the central incisor T is positioned on the outer wall 11 side when taking an impression. Even when the vehicle is too close, the inclined surface guides the central incisor T to an appropriate position. As shown in FIG. 4A, in the conventional impression tray without the front-side regulating projection 11c, when the central incisor T approaches the outer wall W1, the inner incisor T comes into contact with or comes close to the outer wall W1, and the impression material X The contact or close part becomes thin. On the other hand, in the impression tray of this embodiment in which the outer wall portion 11 is provided with the front-side regulating protrusion 11c, when the central incisor T approaches the outer wall portion 11 side, as shown in FIG. The central incisor T is guided only to point or line contact with the front regulation protrusion 11c, and does not make surface contact with the outer wall portion 11, so that the impression material X becomes thin over a wide range. Absent.

  On the inner surface of the inner wall portion 12, a regulating protrusion (hereinafter referred to as a "back-side regulating protrusion") 12b for preventing the back side of the central incisor T from contacting the inner wall portion 12 at the time of taking an impression is provided. The rear-side regulating protrusion 12b is provided so as to project toward the outer wall portion 11 side. The rear-side regulating protrusion 12b is provided on the front side near the center of the inner wall portion 12, more specifically, on the rear side of the central incisor T. As shown in FIG. 3B, each of the rear-side regulating protrusions 12 b of this embodiment is formed in a triangular shape in a side view formed from the upper end of the inner wall portion 12 to the center of the bottom surface portion 13 in the front-rear direction or a position closer to the front in the front-rear direction. It is a protrusion, and it looks like a single vertically long linear protrusion from the outer wall portion 11 side. The top of the back side regulation protrusion 12b of this embodiment is formed into a sharp pointed shape so that the contact point becomes small.

  Two rear-side regulating protrusions 12b are provided at intervals in the width direction. The number of the back side regulating protrusions 12b may be more or less than two. The maximum protruding length H2 (FIG. 3B) of the back-side regulating protrusion 12b of this embodiment is about 12 mm. This dimension is an example, and the maximum protruding length H2 of the back-side regulating projection 12b can be higher or lower than 12 mm.

  Since the back-side regulating projection 12b of this embodiment has a downwardly inclined shape directed forward, even if the central incisor T is too close to the inner wall 12 side during taking an impression, the inclined surface causes the central incisor T T is guided to the appropriate position. As shown in FIG. 4C, in the conventional impression tray without the back-side regulating protrusion 12 b, when the central incisor T approaches the inner wall portion W <b> 2, the central incisor T contacts or comes close to the inner wall portion W <b> 2 as it is, and the impression material X The contact or close part becomes thin. On the other hand, in the impression tray of the present embodiment in which the inner wall portion 12 is provided with the back-side regulating protrusion 12b, when the central incisor T approaches the inner wall portion 12 side, as shown in FIG. The central incisor T is guided only to point or line contact with the back-side regulating protrusion 12b and does not come into surface contact with the inner wall portion 12, so that the impression material X becomes thin over a wide range. Absent.

  The inner wall portion 12 is provided with a regulating projection 12c (hereinafter referred to as a "lateral regulating projection") for preventing the first premolar from shifting to the lateral side when taking an impression, separately from the back-side regulating projection 12b. . The side regulating protrusion 12c is provided so as to project toward the outer wall portion 11 side. The side regulating protrusions 12c are provided on both ends in the longitudinal direction of the inner wall portion 12, more specifically, outside the first premolar (between the first premolar and the second premolar). As shown in FIG. 3C, the side regulation protrusion 12c of this embodiment is a triangular protrusion in a side view formed from the upper end of the inner wall 12 to a position closer to the rear in the front-rear direction of the bottom surface 13.

  The maximum protruding length H3 (FIG. 3C) of the side regulating protrusion 12c of this embodiment is about 2 mm. This dimension is an example, and the maximum protrusion length H3 of the side regulation protrusion 12c can be longer or shorter than 2 mm.

  As described above, by providing the side regulating protrusions 12c on both ends in the longitudinal direction of the inner wall portion 12, the tooth to be acquired at the time of impression acquisition (for example, eight teeth from the left first molar to the right first molar). The whole book) is guided to the appropriate position.

  In this embodiment, an example is given in which the side regulating protrusions 12c are provided on the inner wall portion 12. However, the side regulating protrusions 12c are provided at both longitudinal end portions of the outer wall portion 11 and longitudinal end portions of the bottom surface portion 13. It can also be provided. The side regulating protrusion 12c can be provided on all of the outer wall portion 11, the inner wall portion 12, and the bottom surface portion 13, or can be provided on any one or more of them. The side restricting projection 12c protrudes toward the inner wall part 12 when provided on the outer wall part 11, and protrudes upward when provided on the bottom part 13.

  On the inner surface (upper surface) of the bottom portion 13, a regulating protrusion (hereinafter referred to as a "bottom regulating protrusion") 13a for preventing the tip of the tooth from contacting the bottom portion 13 at the time of taking an impression is provided. The bottom regulation protrusion 13a is provided to project upward. The bottom regulation protrusions 13a are provided on both outer sides of the two front regulation protrusions 11c. Specifically, five bottom regulation protrusions 13a are provided at an interval outside one of the two front regulation protrusions 11c, and five bottom regulation projections are arranged outside the other front regulation protrusion 11c. The regulating protrusions 13a are provided at intervals. The number of the bottom regulation protrusions 13 may be more or less than five. The top of the bottom regulation protrusion 13a of this embodiment has a sharp pointed shape so that the contact point becomes small. The maximum protruding length H4 (FIG. 3D) of the bottom-side regulating projection 13a of this embodiment is about 1 mm. This dimension is an example, and the maximum protrusion length H4 of the bottom-side regulating protrusion 13a can be set higher or lower than 1 mm.

  The handle part 20 is a part held by hand at the time of work. The handle portion 20 of this embodiment includes an elongated plate-like handle base 20a whose end is chamfered in an arc shape, and protruding pieces 20b protruding outward on both widthwise sides of the handle base 20a. The handle base 20a has a thickness of about 3 mm, and protrudes outward at a lower position of the outer wall 11 of the main body 10, more specifically, at a connecting portion between the outer wall 11 and the bottom surface 13.

  Both protruding pieces 20b provided on the handle base 20a have a trapezoidal shape in plan view, and can be separated from the handle base 20a. The projecting piece 20b of this embodiment has a thickness of about 0.6 mm. However, this numerical value is an example, and the protruding piece 20b can be made thinner or thicker than 0.6 mm. As shown in FIGS. 5 (a) to 5 (c), the separated protruding pieces 20b, when the gypsum S is poured after completion of the impression acquisition, the gypsum S It is used as a dam member to prevent the water from flowing out from both ends in the direction. The protruding piece 20b may be provided as needed, and may be omitted when unnecessary. The handle portion 20 may be any other shape as long as it can be held by hand during work.

  The impression tray of this embodiment has an appearance as shown in FIGS. 6A is a front view of the impression tray of this embodiment, FIG. 6B is a rear view of FIG. 6A, FIG. 6C is a plan view of FIG. 6A, and FIG. 6) is a bottom view of FIG. 6 (a), FIG. 6 (e) is a left side view of FIG. 6 (a), and FIG. 6 (f) is a right side view of FIG. 6 (a). In the impression tray of the present invention, the front regulation protrusion 11c, the back regulation protrusion 12b, the side regulation protrusion 12c, the bottom regulation protrusion 13a, and the protruding piece 20b are characteristic parts that are not present in the conventional impression tray. .

(Other embodiments)
In the above embodiment, the impression tray provided with all of the front regulation protrusion 11c, the back regulation protrusion 12b, the side regulation protrusion 12c, and the bottom regulation protrusion 13a is an example. It is not necessary to have all of them, and any one or more of them may be provided.

  In the above embodiment, the case where the impression tray is made of resin is described as an example. However, the impression tray of the present invention may be made of a material other than resin, such as metal.

  In the above embodiment, the case where the main body 10 includes the outer wall part 11, the inner wall part 12, and the bottom part 13 is described as an example. However, the main body 10 in the impression tray of the present invention is similar to the conventional upper jaw tray. Instead of 12, a curved ridge (not shown) may be provided. In this case, the back regulation protrusion 12b and the side regulation protrusion 12c can be provided on the curved ridge. In addition, the shape of the main body 10 is an example, and other shapes (for example, one for one jaw) can be used.

  In the above-described embodiment, the shape of the back-side regulating protrusion 12b is downwardly inclined toward the front, but the shape of the back-side regulating protrusion 12b is a rectangular shape which is vertically long in side view as shown in FIG. Can also. In the case of the shape as shown in FIG. 7A, it is possible to prevent the central incisor T and the gum from coming into contact with the back-side regulating protrusion 12b.

  Although not provided on the impression tray of the embodiment, a groove 12e as shown in FIG. 7A may be provided on the upper surface of the inner wall portion 12. The groove 12e is a groove serving as a mark for allowing the upper jaw side tooth (hereinafter referred to as “maxillary tooth”) to be embedded in an appropriate position of the impression material X.

  In the case of the impression tray without the groove 12e, the front surface of the upper teeth may be too close to the inner surface of the outer wall portion 11 and the front surface side may be extremely thin depending on the user. On the other hand, in the case of the impression tray provided with the groove 12e, the impression tray placed in the oral cavity is temporarily stopped at a position where the tip of the maxillary tooth fits into the groove 12e, and then the tip of the maxillary tooth is placed on the upper surface of the inner wall portion 12. By sliding the upper part of the impression material X, it is possible to suppress the front surface of the upper teeth from approaching the inner surface of the outer wall portion 11 and to embed the upper teeth in the appropriate position of the impression material X.

  Although not provided on the impression tray of the above-described embodiment, a bottom rib 13b as shown in FIGS. The bottom rib 13b allows the impression tray to be fixed only by the upper and lower front teeth (the teeth inside the canines) at the time of impression acquisition. If the back teeth hit the impression tray at the time of impression acquisition, the impression tray may be tilted and an appropriate impression may not be acquired. On the other hand, according to the impression tray provided with the bottom rib 13b, it is possible to prevent the impression tray from being tilted due to the back teeth hitting the impression tray.

  The impression tray shown in FIGS. 7A and 7B has an appearance as shown in FIGS. 8A is a front view of the impression tray shown in FIGS. 7A and 7B, FIG. 8B is a rear view of FIG. 8A, and FIG. 8C is a plan view of FIG. 8 (d) is a bottom view of FIG. 8 (a), FIG. 8 (e) is a left side view of FIG. 8 (a), and FIG. 8 (f) is a right side view of FIG. 8 (a). .

  In the impression tray shown in FIGS. 8A to 8F, in addition to the front regulation protrusion 11c, the back regulation protrusion 12b, the side regulation protrusion 12c, the bottom regulation protrusion 13a, and the protruding piece 20b, the inner wall 12 The groove 12e on the upper surface and the bottom rib 13b provided on the back surface of the bottom portion 13 are characteristic portions that are not included in the conventional impression tray.

(Example of use)
An example of use of the impression tray of the present invention will be described with reference to FIGS. Here, a case where an impression of the maxillary teeth is obtained using the impression tray of the present invention will be described.
(1) As shown in FIG. 5A, the impression material X is filled in the impression material filling portion Y of the main body 10.
(2) An impression tray filled with the impression material X is placed in the oral cavity, and the impression material X is pressed against the upper teeth to obtain an impression.
(3) After taking the impression, the impression tray is taken out of the oral cavity, and the impression material X from which the impression is taken is washed (FIG. 5B).
(4) As shown in FIG. 5 (c), the protruding piece 20b is separated from the handle base 20a, and is erected on both ends in the longitudinal direction of the tooth-shaped concave portion Z formed in the impression material X.
(5) After the protruding pieces 20b are erected, the plaster S is poured into the tooth-shaped recess Z of the impression material X. After the plaster S is poured, the impression tray is placed on a vibrator to perform deaeration and evenly fill the plaster S.
(6) The hardened gypsum S is taken out from the tooth shape concave portion Z of the impression material X to complete a tooth model.

  In the use example, when the impression material X is pressed against the upper teeth, the teeth are guided to an appropriate position by the front regulation protrusions 11c, the back regulation protrusions 12b, the side regulation protrusions 12c, the bottom regulation protrusions 13a, and the like. Therefore, the teeth do not contact the outer wall portion 11 or the inner wall portion 12 of the impression tray, and the inconvenience caused by the contact with the outer wall portion 11, the inner wall portion 12, or the like hardly occurs.

  Further, since the protruding pieces 20b are provided upright on both ends in the longitudinal direction of the tooth-shaped concave portion Z of the impression material X, the gypsum S does not easily flow out of the tooth-shaped concave portion Z. In the conventional impression tray, there was no such thing as the protruding pieces 20b standing upright at both ends in the longitudinal direction of the tooth mold concave portion Z. Therefore, when the air in the gypsum S was extracted by the vibrator, the gypsum was removed from the tooth mold concave portion Z. Although it was necessary to hold the impression tray at an angle at which S did not flow out, when the impression tray of this embodiment was provided with the protruding pieces 20b standing on both ends in the longitudinal direction of the tooth-shaped concave portion Z, Since it is not necessary to hold the impression tray at an angle at which the gypsum S does not flow out of the tooth-shaped concave portion Z, the deaeration operation using the vibrator is facilitated.

  In the above-mentioned use example, an example is described in which an impression of a maxillary tooth is obtained. However, in a case where an impression of a mandibular tooth (mandibular tooth) is obtained, an impression can be obtained in a similar procedure.

  The impression tray of the present invention can be used not only when a wearer himself takes an impression, but also when a dentist takes an impression of a patient at a dental clinic.

10 body 11 outer wall portion 11a outer wall slit 11b non-hole surface 11c regulating protrusion (front side regulating protrusion)
11d Outer vertical column part 12 Inner wall part 12a Inner wall slit 12b Restriction protrusion (rear side restriction protrusion)
12c Control protrusion (side control protrusion)
12d inner vertical column portion 12e groove 13 bottom portion 13a regulating protrusion (bottom regulating protrusion)
13b Bottom rib 20 Handle part 20a Handle base 20b Protrusion piece S Plaster T Central incisor W1 Outer wall part W2 Inner wall part X Impression material Y Impression material filling part Z Tooth-shaped recess

Claims (6)

In an impression tray in which a handle portion is provided on a main body having an impression material filling portion,
On the inner surface of the peripheral wall of the main body, a regulating projection for preventing teeth from contacting the peripheral wall of the main body was provided.
An impression tray characterized by the following. The impression tray according to claim 1,
The main body has an outer wall portion located outside the tooth when put in the mouth,
A front-side regulating protrusion that prevents the front side of the tooth from contacting the outer wall as the regulating protrusion is provided inwardly on the inner surface of the outer wall portion,
An impression tray characterized by the following. In the impression tray according to claim 1 or 2,
The main body has an inner wall portion located inside the tooth when put in the mouth,
A back-side regulating protrusion for preventing the back side of the tooth from contacting the inner wall portion as the regulating protrusion is provided inwardly on the inner surface of the inner wall portion,
An impression tray characterized by the following. The impression tray according to any one of claims 1 to 3,
The main body has a bottom part located on the tip side of the tooth when put in the mouth,
A bottom-side regulating protrusion for preventing the tip side of the tooth from contacting the bottom surface as the regulating protrusion is provided inwardly on the inner surface of the bottom surface,
An impression tray characterized by the following. The impression tray according to any one of claims 1 to 4,
The top of the regulating protrusion is in a line shape contacting the tooth with the line or a point shape contacting the tooth with the point,
An impression tray characterized by the following. The impression tray according to any one of claims 1 to 5,
The handle portion includes a handle base and a protruding piece provided to be separable to the handle base,
The protruding piece is separated from the handle base and is erected on the longitudinal end side of the impression material after taking the impression, so that the gypsum poured into the tooth mold recess of the impression material is removed from the tooth mold recess. Can prevent it from flowing out,
An impression tray characterized by the following.

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