WO2014069725A1

WO2014069725A1 - Dental impression tray

Info

Publication number: WO2014069725A1
Application number: PCT/KR2013/001941
Authority: WO
Inventors: 문형주
Original assignee: Moon Hyung Joo
Priority date: 2012-11-01
Filing date: 2013-03-11
Publication date: 2014-05-08

Abstract

The present invention relates to a U-shaped dental impression tray comprising a first handle portion and a U-shaped impression material first accommodation portion, wherein the U-shaped impression material first accommodation portion comprises a first support having a curvature radius larger than the teeth, a second support having a curvature radius smaller than the teeth, a first net cloth provided between the first support and the second support, and first impression re-discharge holes which are respectively punctuated at one side of upper and lower portions of the curved surface of the first support or the curved surface of the second support around the first net cloth, and an extension portion symmetrically extended from the U-shaped center in the U-shaped impression material first accommodation portion is extended beyond the occlusal point of teeth. Additionally, the first impression re-discharge holes are formed in such a way that the cross-section of the hole formed on the outer surface of the first support or the second support is larger than that of the hole formed on the inner surface of the first support or the second support, and a plurality of the first impression re-discharge holes are formed in such a way that any one hole can be punctuated toward the upper portion of the first support or the second support and a hole adjacent to the hole can be punctuated toward the lower portion of the first support or the second support. Moreover, the present invention relates to the U-shaped dental impression tray comprising a second handle portion and a U-shaped impression material second accommodation portion, wherein the U-shaped impression material second accommodation portion comprises narrow U-shaped third supports formed so as to allow a row of teeth to come therein, a second net cloth provided between the third supports, and second impression re-discharge holes which are respectively punctuated at one side of upper and lower portions of the curved surface of the third supports around the second net cloth, and an extension portion symmetrically extended from the U-shaped center in the U-shaped impression material second accommodation portion is extended beyond the occlusal point of teeth. The second impression re-discharge holes can formed in such a way that the cross-section of the hole formed on the outer surface of the third supports is larger than that of the hole formed on the inner surface of the third supports, and a plurality of the second impression re-discharge holes are formed in such a way that any one hole can be punctuated toward the upper portion of the third supports and a hole adjacent to the hole is can be punctuated toward the lower portion of the third supports. According to the present invention, it is possible to economically carry out dental impression since the dental impression can be stably carried out without using an excessive amount of impression material during an impression taking process (impression material curing process). Furthermore, it is possible to readily carry out dental impression since conical holes are formed at one side of the supports (the first support, the second support and the third supports) of the present invention, thereby preventing an impression material from being separated from the tray by external impact after being cured.

Description

Tooth impression tray

The present invention relates to a tray for impression of teeth, and more particularly, to a tray for impression of teeth using an impression material not excessively used in the impression acquisition process so as to make a pattern of teeth.

The tooth impression tray is a tool for shaping a tooth in dental treatment. In the case of a tooth defect, a tray for impression impression is a tool for receiving impression material in the process of producing a sound mold for a replica of oral tissue. The impression material is hardened in the form of teeth while housed in a tooth impression tray (curing) to provide the sound profile of the internal impression structure of the oral cavity of the dental patient. The artificial teeth or parts of the teeth are manufactured based on the provided sound shapes.

The impression tray is composed of an impression material receiving portion having a concave structure capable of receiving the impression material and a handle portion for controlling the tray.

The specific impression acquisition process is to put the impression material with non-solidified fluid in the oral cavity, and the patient bites the impression material and keeps it pressed to wait for the impression material to harden. While the impression material hardens, it is important that the tray remains stationary while the patient holds the teeth in place.

However, in the conventional tray, since the tray is bitten only in the anterior teeth of the tooth, the occlusal point between the lower tooth and the upper tooth is a single point, which causes the tray not to be sufficiently secured and a tilting phenomenon occurs. In order to overcome this problem, a tray was formed to simultaneously pattern the following Chihuahua and Wichia (Korean Patent Registration No. 0715890). However, the tray also has a problem that the excessive impression material is used to open the pattern of the teeth by the patient to bite the impression material to be over the skeleton of the tray to solidify each other. In addition, it is difficult for the patient to bite the impression material by pushing the bones of the tray and hardening each other. There is a problem that an error in the acquisition process occurs.

The present invention has been made to solve such a problem, an object of the present invention is to bite the tray to the posterior portion of the two or more occlusal point between the lower tooth and the upper tooth, but the impression material is easily flowed out by the hole in the skeleton of the tray It is pressed to form a nail head shape by being fixed to, or coupled to each other to provide a tray for tooth impression to obtain the impression effectively without error without using excessive impression material. In another aspect, the present invention is to provide a tray for impression teeth by making the shape of the hole in the skeleton of the tray into a horn shape so that the impression material is fixed to the tray so that it is not easily separated by an external impact.

In order to achieve the above object, the present invention, in the U-shaped impression tray for raising the teeth of the tooth, comprising a first handle portion and the U-shaped impression material first receiving portion, the U-shaped impression material first receiving portion, the radius of curvature The first support, which is larger than the radius of curvature of the teeth and the second support, whose radius of curvature is smaller than the radius of curvature of the teeth, and the first support, which is installed between the first and the first mesh cloth installed between the first support and the second support And a first impression material discharge hole drilled in one of the upper and lower sides of the curved surface or the second support, and the U-shaped impression material first accommodating portion extends symmetrically from the center of the U-shape to extend beyond the posterior occlusal point. It provides a tooth impression tray.

In addition, the first impression material discharge hole is characterized in that the cross section of the hole in the outer surface of the first support or the second support is formed larger than the cross section of the hole in the inner surface of the first support or the second support. It is also possible to provide a tray for tooth impression. The first impression material discharge hole is a plurality of dogs are drilled, any one of the hole direction is drilled in the upper direction of the first support or the second support, the direction of the hole adjacent to the hole is the first support or the It is also possible to provide a tooth impression tray, which is drilled in the lower direction of the second support.

In addition, the present invention, in order to achieve the above object in the U-shaped tooth impression tray for shaping a portion of the tooth, comprising a second handle portion and the U-shaped impression material second receiving portion, U-shaped impression material second receiving portion, The second impressions discharged from the upper and lower sides of the curved surface of the third support centered around the second and second mesh cloths installed between the narrow U-shaped third support and the third support formed to accommodate a row of teeth. And a ball, wherein the U-shaped impression material second accommodating portion provides a tooth impression tray, wherein an extension extending symmetrically from the center of the U-shape extends after the posterior occlusal point.

The second impression material discharge hole may provide a tooth impression tray, characterized in that the cross section of the hole in the outer surface of the third support is larger than the cross section of the hole in the inner surface of the third support. The second impression material discharge hole is a plurality of dogs are drilled, any one of the hole direction is drilled in the upper direction of the third support, the direction of the hole adjacent to the hole is characterized in that the drilled in the lower direction of the third support A tooth impression tray may be provided.

According to the present invention, it is possible to obtain a stable impression without using excessive impression material in the impression taking process (impression material hardening process), it is possible to economically model the tooth. In addition, the horn-shaped hole is formed on one side of the support (first support, second support, third support) of the present invention so that the impression material is hardened so that it is not detached from the tray due to external impact, so that the tooth pattern can be easily opened. have.

1 is a perspective view showing an embodiment of the present invention tray.

2 is a plan view of FIG.

Figure 3 is a perspective view showing a second embodiment of the present invention tray.

Figure 4 is a schematic diagram of the tray of the present invention installed in the oral cavity of a patient.

5 is a perspective view showing a third embodiment of the present invention tray;

6 is a plan view of FIG.

FIG. 7 is a detailed view of the second accommodation portion in FIG. 5.

8 is a perspective view showing a fourth embodiment of the present invention tray.

9 is a detailed view of the second accommodation portion in FIG. 8;

[Description of the code]

10 tray

100: first handle portion 110: second handle portion

200: first accommodating part

210: first support 220: second support

230: first mesh cloth 240: first impression re-discharge ball

250: first projection

300: second accommodating part

310: third support 320: the second mesh gun

330: 2nd impression material discharge ball 340: 2nd projection

Hereinafter, with reference to the accompanying drawings will be described in detail the specific contents of the tray for impression teeth according to the present invention.

1 is a perspective view showing an embodiment of the present invention tray, Figure 2 is a plan view of FIG.

Figure 3 is a perspective view showing a second embodiment of the present invention tray, Figure 4 is a schematic diagram of the tray of the present invention is installed in the mouth of the patient.

The present invention relates to a tray 10 for impression of teeth, in detail, in the U-shaped impression tray 10 for shaping teeth, the first handle portion 100 and the U-shaped impression material first receiving portion 200 And a U-shaped impression material first receiving portion 200, the first support 210 having a radius of curvature greater than the radius of curvature of the teeth and the second support 220 having a radius of curvature smaller than the radius of curvature of the teeth, and The curved surface of the first support 210 or the curved surface of the second support 220 around the first mesh cloth 230 and the first mesh cloth 230 installed between the first support 210 and the second support 220. The first impression material discharge hole 240 is bored in each of the upper and lower sides, the U-shaped impression material first receiving portion 200 is characterized in that the extension extending from the center of the U-shaped symmetrically extended until after the posterior occlusal point It is done. In addition, the first impression material discharge hole 240 has a cross section of the hole in the outer surface of the first support 210 or the second support 220 is located on the inner surface of the first support 210 or the second support 220. It is characterized by being formed larger than the cross section of a hole.

The present invention relates to a tray 10 for impression of teeth composed of the first handle portion 100 and the first receiving portion (200). The tray of the present invention has a problem in that the impression material is excessively used to allow the patient to bite off the impression material so that the parts of the tray are hardened over the skeleton of the tray. If the impression material is not excessively used, a problem may arise in that the upper and lower impression materials may not be combined with each other, and the pattern of the tooth needs to be re-opened according to the difference in pressure in which the patient bites the impression material. The present invention is to solve the above problems, even if the impression material is not excessively injected into the tray, the impression material discharged to the first impression material discharge hole 240 by the pressure biting lightly the patient can not be pressed by the inner surface of the patient's ball. By forming the head shape, the fixed or discharged impression material is bonded to each other to make a pattern of the tooth can be an economic pattern of the tooth. In addition, the first impression material discharge hole 240 formed by varying the cross-sectional size of both ends is formed so that the discharged impression material is formed to form a horn body (horn body of various shapes such as conical body, spherical body, etc.) in which the vertex portion is cut off, the impression material is easily separated It can be fixed to the tray 10 without being able to mark the teeth even with a small amount of impression material.

As shown in Table 1 below, comparing the amount of the impression material injected into the tray and the amount of the impression material injected into the tray of the present invention clearly shows that the amount of the impression material injected into the present invention is small. In other words, the impression material injected into the present invention is economically effective because it is about 42% less than the existing invention.

Table 1

	Impression material quantity injected into existing tray	The amount of impression material injected into the present invention tray	Remarks
type1	50 ml	29ml	42% reduction in impression material injected into the present invention
type2	45 ml	26 ml	Impression material injected into the present invention is reduced by 42.22%

The first handle part 100 is a member that is coupled to one side of the first support 210 of the U-shaped impression material first receiving part 200 to help the tray 10 easily open the bone pattern. The first handle 100 may be detachable from the first U-shaped impression material receiving portion 200. By temporarily separating the first handle part 100 in the pulling process, the patient can wait more comfortably during the curing process of the impression material, and when the curing of the impression material is completed, the first handle part 100 is again U-shaped impression material The U-shaped tooth impression tray 10 may be separated from the oral cavity of the patient by being coupled to the first accommodating part 200.

The first accommodating part 200 may include a first support 210, a second support 220, a first mesh cloth 230, and a first impression material discharge hole 240. In addition, the first accommodating part 200 may further include a first protrusion 250. The first accommodating part 200 has a U-shaped shape with a configuration corresponding to a body for forming a tooth pattern. The first support 210 is an outer support of the first accommodating part 200 in which the radius of curvature is greater than the radius of curvature of the teeth. The second support 220 is an inner support of the first accommodating part 200 whose radius of curvature is smaller than the radius of curvature of the teeth. The outer surface of the first support 210 and the second support 220 means the outer surface of the first support 210 and the second support 220, the inner surface of the first support 210 and the second support 220. ) Means the inner side. The first support 210 and the second support 220 may be used a variety of materials if the required strength is satisfied, but preferably a synthetic resin-based material such as plastic.

The first mesh cloth 230 is a member installed between the first support 210 and the second support 220. The first mesh cloth 230 is a member that both ends are coupled to the middle portion of the first support 210 and the second support 220 to divide the top and bottom of the tray 10. The first mesh cloth 230 is a portion of the impression material is injected is a mesh cloth made of cotton or polymer resin.

The first impression material discharge hole 240 has a plurality of holes are formed in the curved surface of the first support 210 or the upper and lower sides of the second support 220, respectively, around the first mesh cloth 230. The first impression material discharge hole 240 is configured to easily combine the impression material injected above and below, even if the impression material is injected into the first mesh cloth 230 less than the existing amount installed. That is, even if less impression material is injected into the first mesh cloth 230, the impression material discharged to the first impression material discharge hole 240 is easily compressed by the patient's ball by the pressure of the patient to form a nail head shape. The immobilized or ejected impression material is easily bonded to each other so that the teeth can be easily patterned. The first impression material discharge hole 240 has a cross section of a hole in the outer surface of the first support 210 or the second support 220 in the inner surface of the first support 210 or the second support 220. Since it is formed larger, the impression material can be stably fixed to the tray 10. That is, the impression material discharged through the first impression material discharge hole 240 is formed so as to form a horn body shape is not easily separated by an external impact can easily take a pattern of teeth.

In addition, the first impression material discharge hole 240 is a plurality of dogs are drilled, any one of the hole direction is drilled in the upper direction of the first support 210 or the second support 220, the direction of the hole adjacent to the hole May be drilled in a lower direction of the first support 210 or the second support 220. That is, a plurality of first impression material discharge holes 240 drilled in the first support 210 or the second support 220 are adjacent to each other in a zigzag manner so that impression materials are injected to the first impression material discharge hole 240. When fixed to, structurally stable behavior can be achieved. Impression material injected into and fixed in the first impression material discharge hole 240 that is drilled as described above may form an example of a tooth without being easily detached from the tray 10 by an external impact.

The first impression material discharge hole 240 is made according to the condition and environment of the patient at 4mm intervals. The diameter of the first impression material discharge hole 240 in the inner surface of the first support 210 or the second support 220 may be made of various sizes, but preferably 1 to 3mm. In addition, the first impression material discharge hole 240 may be six to twelve in the lower, respectively, on the curved surface of the first support (210). The number of the first impression material discharge hole 240 is limited as described above, but may be variously changed according to the tooth or condition of the patient.

The first protrusion 250 protrudes from the U-shaped impression material receiving portion 200 to receive the impression material so that the impression material is easily detached from the projection. When the hardening of the impression material is completed during the impression acquisition process, the first protrusion 250 should remove the U-shaped tooth impression tray 10 from the oral cavity of the patient and separate the elapsed impression material from the tray 10. At this time, the protrusion is formed on the surface of the tray 10 support that the impression material abuts, the impression material is easily separated from the tray 10, it is possible to prevent the case in which the pressure is applied during the separation process damage the hardened impression material. The first protrusion 250 may be a protrusion or a point protrusion. In addition, the coating material may be coated with a special film on the surface where the impression material is accommodated so that the removal may be more easily.

5 is a perspective view showing a third embodiment of the present invention tray, and FIG. 6 is a plan view of FIG. FIG. 7 is a detailed view of the second accommodation portion in FIG. 5.

8 is a perspective view showing a fourth embodiment of the present invention tray, and FIG. 9 is a detailed view of the second accommodation portion in FIG.

Another tooth impression tray 10 of the present invention is a U-shaped tooth impression tray 10 for shaping a portion of the tooth, the second handle portion 110 and the U-shaped impression material second receiving portion 300 It includes, the U-shaped impression material second receiving portion 300, the second mesh cloth 320 is provided between the narrow U-shaped third support 310 and the third support 310 formed to enter a row of teeth. And a second impression material discharge hole 330 drilled on one side of the upper and lower surfaces of the third support 310 based on the second mesh cloth 320, and the U-shaped impression material second receiving part 300 is U-shaped. The extension extending symmetrically from the center of the child is characterized in that it extends until after the posterior occlusal point. In addition, the second impression material discharge hole 330 may be characterized in that the cross section of the hole in the outer surface of the third support 310 is formed larger than the cross section of the hole in the inner surface of the third support 310. .

The present invention relates to a tooth impression tray 10 composed of a second handle portion 110 and the second receiving portion (300). The present invention is to solve the problem of the existing tray as the above tray, even if the impression material is not excessively injected into the tray, the impression material discharged to the second impression material discharge hole 330 by the pressure of the patient biting lightly the patient's cheek Impression material that is fixed or discharged by forming a nail head shape by being pressed by the inner surface is coupled to each other to make a pattern of the tooth and can economically take the tooth pattern. In addition, the second impression material discharge hole 330 formed by varying the cross-sectional size of both ends is formed so that the discharged impression material is formed in the shape of a horn body (horn body of various shapes such as cone body, spherical body, etc.) in which the vertex portion is cut off, the impression material is easily separated It can be fixed to the tray 10 without being able to mark the teeth even with a small amount of impression material.

As shown in Table 2 below, comparing the amount of the impression material injected into the existing tray and the amount of the impression material injected into the tray of the present invention clearly shows that the amount of the impression material injected into the present invention is small. In other words, the impression material injected into the present invention is economically effective because it is about 42% less than the existing invention.

TABLE 2

	Impression material quantity injected into existing tray	The amount of impression material injected into the present invention tray	Remarks
type3	36 ml	21 ml	42% reduction in impression material injected into the present invention

Configurations not described in detail herein are to be described above.

The second handle part 110 is a member that is coupled to one side of the third support 310 of the U-shaped impression material second accommodating part 300 to help the tray 10 easily open the bone pattern. The second handle part 110 is configured to basically play the same role as the first handle part 100 described above.

The second accommodating part 300 is composed of a third support 310, a second mesh cloth 320, and a second impression material discharge hole 330. The second accommodating part 300 has a configuration suitable for forming a tooth pattern of a part of a tooth. In addition, the second accommodating part 300 may further include a second protrusion 340.

The third support 310 is a narrow U-shape formed to enter a row of teeth is suitable to form a row of teeth, that is, a portion of the tooth pattern. The outer surface of the third support 310 means the outer surface of the third support 310, the inner surface means the inner surface of the third support 310. If the third support 310 satisfies the required strength, various materials may be used. Preferably, a synthetic resin-based material such as plastic is used.

The second mesh cloth 320 is a member installed between the third support 310. The second mesh cloth 320 is a member installed among the third supports 310 having a U-shape. The second mesh cloth 320 is a member having the same properties as the material of the first mesh cloth 230.

The second impression material discharge hole 330 has a plurality of holes are respectively drilled on one side of the upper and lower surfaces of the third support 310 around the second mesh cloth 320. The second impression material discharge hole 330 is a hole that plays the same role as the first impression material discharge hole 240 is drilled on one side of the upper and lower surfaces of the third support 310 around the second mesh cloth 320, respectively.

The second impression material discharge hole 330 has a cross section of the hole in the outer surface of the third support 310 is larger than the cross section of the hole in the inner surface of the third support 310, so that the impression material is stably formed in the tray 10. Can be fixed. That is, the impression material discharged through the second impression material discharge hole 330 is formed so as to form a horn body shape is not easily separated by an external impact can easily take a pattern of the teeth.

In addition, the second impression material discharge hole 330 is a plurality of dogs are drilled, any one hole direction is drilled in the upper direction of the third support 310, the direction of the hole adjacent to the hole is the third support 310 It may be drilled in the downward direction of. That is, a plurality of second impression material discharge holes 330 drilled in the third support 310 are adjacent to each other in a zigzag manner so that impression material is injected and fixed to the second impression material discharge hole 330 structurally stable. It can behave. Impression material injected into and fixed in the second impression material discharge hole 330 that is drilled as described above may form an example of a tooth without being easily separated from the tray 10 by an external impact.

Second impression material discharge hole 330 is a hole that serves the same as the first impression material discharge hole 240 is usually made according to the condition and environment of the patient at 4mm intervals. The diameter of the second impression material discharge hole 330 on the inner surface of the third support 310 may be made of various sizes, but preferably 1 to 3mm. In addition, the second impression material discharge hole 330 has six to twelve pieces formed on each of the lower and the straight surfaces of the third support 310 so that the impression materials installed on the third support 310 can be easily coupled to each other. Configuration.

The second protrusion 340 is configured to serve as the first protrusion 250 described above, as the U-shaped impression material second receiving part 300 protrudes on a surface accommodating the impression material so that the impression material can be easily removed.

As described above, a preferred embodiment of the tray for impression of teeth according to the present invention is described, which is described as at least one embodiment, and thus the technical idea and its structure and operation of the present invention are not limited thereto. The scope of the technical spirit of the present invention is not limited or limited by the drawings or the description with reference to the drawings. In addition, the concept and embodiment of the invention presented in the present invention may be used by those skilled in the art as a basis for modifying or designing to other structures for carrying out the same purpose of the present invention. The equivalent structure modified or changed by those skilled in the art to which the present invention pertains is to be bound by the technical scope of the present invention described in the claims, and the spirit or scope of the invention described in the claims. Various changes, substitutions and alterations are possible without departing from the scope of the invention.

Claims

In the U-shaped tooth impression tray for shaping a tooth,

First handle portion 100 and the U-shaped impression material containing the first receiving portion 200,

The U-shaped impression material first receiving portion 200,

A first support 210 having a radius of curvature greater than the radius of curvature of the teeth and a second support 220 having a radius of curvature smaller than the radius of curvature of the teeth, and installed between the first support 210 and the second support 220. First impression material discharge hole drilled on one side of the upper and lower sides of the curved surface of the first support 210 or the second support 220 around the first mesh cloth 230 and the first mesh cloth 230 to be 240, and

The U-shaped impression material first receiving portion 200 is a tooth impression tray, characterized in that the extension extending from the center of the U-shaped symmetrically extended until after the molar occlusal point.
The method of claim 1,

The first impression material discharge hole 240 has a cross section of a hole in the outer surface of the first support 210 or the second support 220 is the inner surface of the first support 210 or the second support 220. Tooth impression tray, characterized in that formed larger than the cross section of the hole in the.
The method of claim 1,

The first impression material discharge hole 240 is a plurality of dogs,

Any one hole direction is drilled in the upper direction of the first support 210 or the second support 220, the direction of the hole adjacent to the hole is the first support 210 or the second support ( Tooth impression tray, characterized in that the opening in the lower direction of 220).
The method according to claim 1 or 2,

Tooth impression tray, characterized in that the interval of the first impression material discharge hole 240 is 4mm.
The method according to claim 1 or 2,

Tooth impression tray, characterized in that the diameter of the first impression material discharge hole 240 on the inner surface of the first support 210 or the second support 220 is 1 to 3mm.
The method according to claim 1 or 2,

The first impression material discharge hole 240 is a tooth impression tray, characterized in that six to twelve on the curved surface, each lower portion of the first support (210).
The method according to claim 1 or 2,

The U-shaped impression material first receiving part 200 is a tray for tooth impressions, characterized in that it further comprises a first projection (250) on the surface for receiving the impression material so that the impression material is easily removed.
In the U-shaped impression tray for shaping a portion of the tooth,

It includes a second handle portion 110 and the U-shaped impression material second receiving portion 300,

The U-shaped impression material second receiving portion 300,

The third centering around the second mesh cloth 320 and the second mesh cloth 320 installed between the narrow U-shaped third support 310 and the third support 310 formed to enter a row of teeth. And a second impression material discharge hole 330 drilled on one side of the upper and lower surfaces of the support 310,

The U-shaped impression material second receiving portion 300 is a tooth impression tray, characterized in that the extension extending from the center of the U-shaped symmetrically extended until after the molar occlusal point.
The method of claim 8,

The second impression material discharge hole 330 has a tooth cross section of the hole in the outer surface of the third support 310 is formed larger than the cross section of the hole in the inner surface of the third support 310 Tray.
The method of claim 8,

The second impression material discharge hole 330 is a plurality of dogs,

Any one of the hole direction is drilled in the upper direction of the third support 310, the direction of the hole adjacent to the hole is drilled in the lower direction of the third support 310, the tray for tooth impression .
The method according to claim 8 or 9,

The tray of impression impressions, characterized in that the interval of the second impression material discharge hole (330) is 4mm.
The method according to claim 8 or 9,

The tray of impression impressions, characterized in that the diameter of the second impression material discharge hole 330 on the inner surface of the third support 310 is 1 to 3mm.
The method according to claim 8 or 9,

The second impression material discharge hole 330 is a tooth impression tray, characterized in that 6 to 12 are drilled on each of the lower, on a straight surface of the third support (310).
The method according to claim 8 or 9,

The U-shaped impression material second receiving part 300 is a tray for tooth impression, characterized in that it further comprises a second projection (340) on the surface for receiving the impression material so that the impression material is easily removed.