Shade matching aid for shade guide having excellent shape compatibility with shade guide

Abstract

To provide a color tone matching auxiliary tool for a shade guide showing excellent shape adaptability even to artificial tooth shade guides with sticks in various forms and functioning as a gum color shade guide holder with high versatility.SOLUTION: A color tone matching aid for a shade guide which holds a stick-attached artificial tooth shade guide includes a main body 11 whose surface has a gingiva color, a cervical part recess 21 which comes into contact with a cervical part of an artificial tooth of the stick-attached artificial tooth shade guide, and a stick insertion port 31 into which a stick of the stick-attached artificial tooth shade guide is inserted, and has a falling-off suppression mechanism which suppresses falling-off of the stick-attached artificial tooth shade guide.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present invention relates to a shade guide color matching aid that holds a shade guide used when determining the color of an artificial tooth or dental prosthetic device. [Background technology]

[0002] In dental clinics and dental laboratories, artificial tooth shade guides are used when determining the color tone of artificial teeth and dental prosthetic devices (Patent Document 1). Specifically, the color, brightness, saturation, etc. of a patient's intact teeth are compared with the artificial tooth shade guide, and the color tone of the material to be used for the patient's teeth is determined based on the obtained information (hereinafter referred to as shade taking).

[0003] However, when determining the color tone of a material based solely on the color tone of the artificial tooth shade guide, as in the case of the artificial tooth shade guide of Patent Document 1, the background color differs from that of the oral cavity, which can lead to incorrect color design. Specifically, natural teeth in the oral cavity are in close contact with the reddish gums, so the color tone, particularly near the tooth cervical area that is in close contact with the gums, can appear different from the actual color tone.

[0004] As an example of a solution to the problem of color judgment based on background color, a gum color shade guide holder is disclosed in Patent Document 2. The gum color shade guide holder in Patent Document 2 has a recess for the cervical area that matches the shape of the artificial tooth of the artificial tooth shade guide, and a stick insertion port that matches the shape of the stick of the artificial tooth shade guide, and by holding the artificial tooth shade guide during shade-taking, it improves the reproducibility of color tone within the oral cavity. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-6591 [Patent Document 2] Utility Model Registration No. 3036751 Summary of the Invention [Problem to be solved by the invention]

[0006] However, artificial tooth shade guides are currently sold by multiple manufacturers, and the shapes of the artificial teeth and sticks vary greatly between shade guides from different manufacturers. Therefore, conventional gum-colored shade guide holders are manufactured to fit only specific artificial tooth shapes and sticks, which can lead to cases where the gum-colored shade guide holder cannot hold the artificial tooth shade guide. Even when the shade guide can be held in place, the artificial tooth in the shade guide is prone to displacement relative to the gum-colored shade guide holder's cervical recess due to a morphological mismatch between the artificial tooth and the gum-colored shade guide holder's cervical recess, resulting in the artificial tooth shade guide falling out of the cervical recess. Therefore, for example, if a dental clinic owns multiple types of artificial tooth shade guides, it is necessary to have a gum-colored shade guide holder for each type of artificial tooth shade guide.

[0007] In addition, because color information needs to be shared between dental clinics and dental laboratories, dental clinics and dental laboratories are required to use a common artificial tooth shade guide. Therefore, for example, a dental clinic must own multiple types of artificial tooth shade guides for each dental laboratory. Therefore, as the number of artificial tooth shade guides owned increases, dental clinics are required to own many shade guide holders.

[0008] The present invention aims to provide a shade guide color matching aid that exhibits excellent shape compatibility with various types of artificial tooth shade guides and functions as a highly versatile gum color shade guide holder. [Means for solving the problem]

[0009] The present invention provides a shade guide color matching aid for holding a stick-attached artificial tooth shade guide, comprising: a main body having a gum-colored surface; a recess for a cervical portion of the stick-attached artificial tooth shade guide that comes into contact with the cervical portion of the artificial tooth; a stick insertion port into which the stick of the stick-attached artificial tooth shade guide is inserted, A color matching aid for a shade guide is provided, which is characterized by having a fall-off prevention mechanism that prevents the stick-attached artificial tooth shade guide from falling off.

[0010] In the present invention, the stick insertion slot is provided at an angle relative to the main body, and the fall-out prevention mechanism can be configured by the stick insertion slot.

[0011] The shade guide color-matching aid of the present invention may have a window formed below the cervical recess.

[0012] The color matching aid for a shade guide of the present invention has a plurality of window portions formed therein, The rear surface of the main body may have ribs formed between adjacent window portions.

[0013] The color-matching aid for a shade guide of the present invention may have 3 to 6 windows.

[0014] In the present invention, the stick insertion opening may be provided at an angle of 1 to 5 degrees relative to the main body.

[0015] In the present invention, the stick insertion opening may have a dimension of 0.4 to 1.2 mm in the front-to-rear direction.

[0016] In the present invention, the stick insertion opening can have a widened portion that widens the dimension in the front-to-rear direction.

[0017] In the present invention, a plurality of ribs may be formed on the rear surface of the main body, and the fall-off prevention mechanism may be constituted by the plurality of ribs.

[0018] In the present invention, the plurality of ribs may be configured to form narrow portions where the distance between each rib is narrowed.

[0019] The present invention also provides a method for performing shade-taking using a stick-attached artificial tooth shade guide inserted into the shade-matching aid for shade guides of the present invention.

[0020] The present invention also provides a set of the shade guide color matching aid of the present invention and an artificial tooth shade guide with a stick.

[0021] In this specification, the stick insertion port being inclined relative to the main body portion can mean that, when viewed from the side of the color matching aid for shade guide, the extension direction of the inner wall surface of the stick insertion port is inclined relative to the extension direction of the back surface of the main body portion. In this specification, the front side of the shade guide color-matching aid may refer to the front side of the main body. In this specification, the rear side of the shade guide color-matching aid may refer to the back side of the main body. In this specification, the front-to-rear direction refers to the direction connecting the front and rear sides of the shade guide color-matching aid. In this specification, the upper side of the shade guide color-matching aid may refer to the side on which the cervical recess is formed. In this specification, the lower side of the shade guide color-matching aid may refer to the side opposite to the side on which the cervical recess is formed. In this specification, the vertical direction refers to the direction connecting the upper and lower sides of the shade guide color matching aid. In this specification, the left side of the shade guide color matching aid can mean the left side when the surface side of the main body of the shade guide color matching aid is viewed from the front. In this specification, the right side of the shade guide color matching aid can mean the right side when the surface side of the main body of the shade guide color matching aid is viewed from the front. In this specification, the left-right direction refers to the direction connecting the left and right sides of the shade guide color matching aid. [Effects of the Invention]

[0022] According to the present invention, it is possible to provide a shade guide color matching aid that exhibits excellent shape adaptability to various types of artificial tooth shade guides and functions as a highly versatile gum color shade guide holder. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 1 is a front view of a shade guide color matching aid according to one embodiment. [Figure 2] FIG. 2 is a rear view of a shade guide color matching aid according to one embodiment. [Figure 3] FIG. 1 is a plan view of a shade guide color matching aid in one embodiment. [Figure 4] FIG. 2 is a bottom view of a shade guide color matching aid according to one embodiment. [Figure 5] FIG. 2 is a right side view of a shade guide color matching aid according to one embodiment. [Figure 6] FIG. 1 is a left side view of a shade guide color matching aid according to one embodiment. [Figure 7] FIG. 1 is a front perspective view of a shade guide color matching aid according to one embodiment. [Figure 8] FIG. 2 is a perspective view of the rear side of a shade guide color matching aid according to one embodiment. [Figure 9]FIG. 2 is a cross-sectional view taken along line AA in FIG. [Figure 10] FIG. 1 is a schematic front view of a shade guide color matching aid holding two stick-attached artificial tooth shade guides. [Figure 11] FIG. 1 is a schematic diagram of the rear side of a shade guide color matching aid holding three stick-attached artificial tooth shade guides. [Figure 12] 10 is a diagram showing an example of the configuration of multiple ribs of a color matching aid for a shade guide as viewed from the back side. FIG. [Figure 13] 10 is a diagram showing an example of the configuration of multiple ribs of a color matching aid for a shade guide as viewed from the back side. FIG. [Figure 14] 10 is a diagram showing an example of the configuration of multiple ribs as viewed from the top side of a color matching aid for a shade guide. FIG. [Figure 15] 10 is a diagram showing an example of the configuration of multiple ribs as viewed from the top side of a color matching aid for a shade guide. FIG. [Figure 16] 10 is a diagram showing an example of the configuration of multiple ribs of a color matching aid for a shade guide as viewed from the back side. FIG. [Figure 17] FIG. 10 is a cross-sectional view of the portion where the stick insertion slot is formed. [Figure 18] FIG. 18 is an enlarged view of a part of FIG. 17. [Figure 19] FIG. 1 is a schematic side view of a shade guide color matching aid holding a stick-attached artificial tooth shade guide. [Figure 20] FIG. 1 is a diagram showing an example of a commercially available stick-type artificial tooth shade guide. [Figure 21] FIG. 10 is a plan view of a base portion in which a stick insertion slot is formed, along with a cross section of a main body portion. [Figure 22] 10 is a bottom view of the base portion where the stick insertion slot is formed, along with the main body portion. [Figure 23] 10(A) to 10(F) are diagrams showing modified examples of the widened portion. [Figure 24] 10(A) and 10(B) are diagrams showing modified examples of the display position of the color tone symbol. DETAILED DESCRIPTION OF THE INVENTION

[0024] An embodiment of the present invention will be specifically described below, but the present invention is not limited to the following embodiment.

[0025] 1 to 6 are respectively a front view, a rear view, a plan view, a bottom view, a right side view, and a left side view of a shade guide color-matching aid 1 according to one embodiment of the present invention. Fig. 7 and Fig. 8 are respectively a front perspective view and a rear perspective view of the shade guide color-matching aid 1, and Fig. 9 is a cross-sectional view taken along line AA in Fig. 1.

[0026] The shade guide color matching aid 1 of this embodiment includes a main body 11, a cervical recess 21 that contacts the cervical portion of the artificial tooth of the stick-attached artificial tooth shade guide 5 (described in detail below), and a stick insertion port 31 into which the stick of the stick-attached artificial tooth shade guide 5 is inserted. In the shade guide color matching aid 1 of this embodiment, the cervical recess 21 is formed at the upper end of the main body 11. The shade guide color matching aid 1 can have a height (vertical direction in FIG. 1 ) of 10 to 40 mm, a width (horizontal direction in FIG. 1 ) of 20 to 120 mm, and a thickness (front-to-back direction in FIG. 1 ) of 2 to 10 mm, for example. The shade guide color matching aid 1 of this embodiment has a height of 30 mm, a width of 36 mm, and a thickness of 5 mm. The number of cervical recesses 21 and stick insertion ports 31 can be set to the maximum number of stick-attached artificial tooth shade guides that can be held. The shade guide color matching aid 1 of this embodiment has three recesses 21 for the cervical region and three stick insertion openings 31.

[0027] The main body 11 has a surface 11a that is gum-colored. The main body 11 of this embodiment has a substantially rectangular shape in the front view shown in FIG. 1 and is formed so as to have a constant thickness (in the front-rear direction in FIG. 1). The main body 11 of this embodiment further has an upper surface 11b and a back surface 11c. In the main body 11 of this embodiment, the upper surface 11b is located at a portion where the thickness (in the front-rear direction in FIG. 1) gradually decreases. The back surface 11c of this embodiment is configured as a flat surface, and in this embodiment, the extension direction of the back surface 11c constitutes the extension direction of the rectangular shape of the main body 11. In the main body 11 of this embodiment, both ends 11d in the lower width direction in the front view shown in FIG. 1 are rounded with R-chamfering. The value of the R-chamfer is not particularly limited, but can be a radius of 0.2 to 5 mm. In particular, by setting the R-chamfer value to 0.2 mm or more, pain can be reduced even if the shade-taking device accidentally comes into contact with a part of the patient's body.

[0028] The main body 11 of this embodiment has a raised portion 12 on its surface 11a. The raised portion 12 of this embodiment is made of the same material as the main body 11 and is integrally formed with the main body 11, and has the same gum color as the main body 11. The raised portion 12 of this embodiment is formed from approximately the center of the height of the surface 11a of the main body 11 to the upper end 11e of the upper surface 11b. The raised portion 12 of this embodiment has a front surface 12a that, together with the surface 11a of the main body 11, forms the surface of the shade guide color-matching aid 1, and a connecting surface 12c that connects the upper end 12b of the front surface 12a to the upper end 11e of the upper surface 11b of the main body 11. In particular, in this embodiment, the upper surface 11b of the main body 11 and the connecting surface 12c are formed flush with each other so as to form the same plane. Therefore, in this embodiment, the cervical recess 21 is formed so as to straddle the upper end 11e of the main body 11 and the raised portion 12, and to open to the upper surface 11b and the connecting surface 12c of the main body 11. The raised portion 12 in this embodiment has a shape that resembles the gums.

[0029] The material of the main body 11 is not particularly limited, and it can be made of, for example, a resin material colored in the color of gums. Specifically, it can be made of materials such as thermoplastic resins such as polyvinyl chloride, polystyrene, polyethylene terephthalate, polymethyl methacrylate, acrylonitrile-butadiene-styrene resin, and acrylonitrile-styrene resin; elastic materials such as polyethylene, polypropylene, and styrene-butadiene copolymer resin; and thermosetting resins such as polyurethane and silicone resin. In this embodiment, the main body 11 is made of acrylonitrile-styrene resin colored in the color of gums. Therefore, the entire main body 11 of this embodiment has a gum color.

[0030] The gum color of the main body 11 can be, for example, an a* value, which is an index of redness, of 5.0 or more. The "a* value" in the present invention is one of the color numerical values ​​used in the L*a*b* color system, and the a* value is a numerical value indicating redness, i.e., the red side of the L*a*b* color system chromaticity diagram. The a* value can be measured using a spectrophotometer, for example, by reflection colorimetry (measurement field: 2°, measurement diameter: 0.5 mm, light source: C) using a colorimeter VSS7700 (manufactured by Nippon Denshoku Industries Co., Ltd.). The main body 11 can be manufactured without limitation using a general resin molding manufacturing method owned by the relevant manufacturer. General manufacturing methods include injection molding, compression molding, extrusion molding, vacuum molding, build-up molding, and 3D printer modeling. In this embodiment, the main body 11 is manufactured by injection molding.

[0031] In this embodiment, the cervical recess 21 and the stick insertion opening 31 are formed integrally with the main body 11 using the same material as the main body 11. Therefore, in this embodiment, the cervical recess 21 and the stick insertion opening 31 are also manufactured by injection molding from acrylonitrile-styrene resin colored the color of gums, and have a gum color as a whole. Note that the cervical recess 21 and the stick insertion opening 31 may be manufactured using a material different from that of the main body 11, or may be manufactured as separate members.

[0032] In the main body 11 of this embodiment, a color tone symbol 13 indicating the color tone of the gum color is displayed on the surface 11a. Specifically, in this embodiment, the color tone symbol 13 is displayed near the window portion 14. By displaying such a color tone symbol 13 on the surface 11a, it becomes easier to manage the gum color shade guide for each gum color. It also reduces the possibility of selecting the wrong gum color. Such a color tone symbol 13 can be displayed, for example, with a maximum dimension ranging from 2 mm to 5 mm. Furthermore, the color tone symbol 13 can be formed, for example, by imprinting a molding die having a maximum dimension of 3 mm in diameter near the raised portion 12 of the color tone symbol.

[0033] The main body 11 of this embodiment has a window 14 formed below the cervical recess 21, penetrating the front surface 11a and the back surface 11c. Particularly, the window 14 of this embodiment is formed so that a portion thereof straddles the raised portion 12. For example, as shown in FIGS. 10 and 11 , the window 14 can be formed in a position where, when the stick-attached artificial tooth shade guide 5 is held, the color tone symbols ("A" and "B" on the stick of the stick-attached artificial tooth shade guide 5 in FIG. 10 ) displayed on the held stick-attached artificial tooth shade guide 5 can be seen from the front surface 11a of the main body 11. By forming such a window, the color tone symbols written on the stick-attached artificial tooth shade guide 5 can be confirmed without removing the stick-attached artificial tooth shade guide 5 from the shade guide color matching aid 1.

[0034] The window portion 14 can be sized to match the size of the color symbol markings on a commercially available stick-type artificial tooth shade guide 5, and from the perspective of versatility, the height (vertical direction in Figure 1) can be 3 to 10 mm and the width (horizontal direction in Figure 1) can be 4 to 9 mm.

[0035] In particular, in this embodiment, the color tone symbol 13 is formed near the window 14. Therefore, the color tone symbol marking of the stick-type artificial tooth shade guide 5, which can be seen through the window 14, and the gum color tone symbol 13 can be easily visually confirmed at the same time. This effectively prevents the wrong gum color from being selected. Note that the color tone symbol 13 may be formed in a location other than the vicinity of the window 14, or on a surface other than the surface 11a of the main body 11.

[0036] In particular, in this embodiment, the window 14 is formed so that it becomes larger from the back surface 11c toward the front surface 11a. By forming the window in this manner, it becomes possible to easily visually confirm the color tone symbol markings on the artificial tooth shade guide.

[0037] The number of windows 14, like the cervical recess 21 and the stick insertion port 31, can be set to the maximum number of stick-attached artificial tooth shade guides to be held; in this embodiment, three windows 14A-14C are formed. The maximum number of stick-attached artificial tooth shade guides to be held can be, for example, 1 to 10, or 3 to 6. By setting the maximum number of stick-attached artificial tooth shade guides to be held to 3 or more, it is possible to easily consider the shade taking when the central incisors, lateral incisors, and canines are arranged. Furthermore, by setting the maximum number of stick-attached artificial tooth shade guides to be held to 6 or less, it is possible to easily consider the shade taking for the six anterior teeth visible when the mouth is opened. When multiple windows are formed, the spacing between the windows can be determined by the dimensions of the artificial tooth 51 of the stick-attached artificial tooth shade guide 5 to be held.

[0038] In this embodiment, a plurality of ribs 15 are formed on the back surface c of the main body 11. Specifically, ribs 15A to 15D are formed on the back surface c of the main body 11 so as to sandwich a plurality of window portions 14A to 14C therebetween. Ribs 15B and 15C are formed between adjacent window portions 14. In this embodiment, the plurality of ribs 15 are made of the same material as the main body 11 and are provided integrally with the main body 11.

[0039] The ribs formed between adjacent windows 14 function as partitions for the adjacently held stick-attached artificial tooth shade guides 5, and also as guides for the direction in which the stick-attached artificial tooth shade guides 5 are held. Therefore, in this embodiment, by providing ribs between adjacent windows 14, the stick-attached artificial tooth shade guides 5 can be held in the up-down direction regardless of the stick width of the held stick-attached artificial tooth shade guides 5. Therefore, even if a large force in the left-right direction is applied to the shade guide color matching aid 1 holding the stick-attached artificial tooth shade guide 5, the left-right movement of the stick of the stick-attached artificial tooth shade guide 5 is restricted by the multiple ribs 15. Therefore, the stick of the stick-attached artificial tooth shade guide 5 is prevented from falling off from the cervical recess 21 due to large left-right displacement of the stick.

[0040] As in this embodiment, the fall-off prevention mechanism that prevents the stick-attached artificial tooth shade guide 5 from falling off can be configured with multiple ribs. Note that if the fall-off prevention mechanism is configured with other means and the fall-off of the stick-attached artificial tooth shade guide 5 is sufficiently prevented, there is no need to form multiple ribs 15, and even if multiple ribs 15 are formed, there is no need to configure a fall-off prevention mechanism.

[0041] The shape and size of the multiple ribs 15 are not particularly limited, but for example, they can be a vertically elongated, approximately rectangular shape that is long in the vertical direction on the back surface shown in Figure 2, with a horizontal width (left-right dimension) of 0.5 to 2 mm and a vertical width (up-down dimension) of 3 to 9 mm.

[0042] The material of the plurality of ribs 15 is not particularly limited, but the same material as that used for the main body portion 11 can be used.

[0043] The plurality of ribs 15 may be configured so that the spacing between the plurality of ribs 15 between adjacent plurality of ribs 15 is constant or may be configured so that the spacing between the plurality of ribs 15 between adjacent plurality of ribs 15 is variable. When the spacing between the plurality of ribs 15 between adjacent plurality of ribs 15 is configured so that the plurality of ribs 15 are variable, for example, the plurality of ribs 15 may be configured so that narrow portions are formed where the spacing between each other narrows.

[0044] One example of the configuration of the plurality of ribs 15 having such narrow portions is a trapezoidal shape in which the horizontal dimension of the lower side in the vertical direction of the plurality of vertically elongated, approximately rectangular ribs 15 is increased, as shown in Fig. 12. In this case, horizontal displacement of the stick of the shade guide 5 with the artificial tooth at the center can be significantly suppressed.

[0045] Another example of the configuration of the plurality of ribs 15 having narrow portions is a trapezoidal shape in which the upper side of the vertically elongated, approximately rectangular ribs 15 has a larger horizontal dimension, as shown in Fig. 13. In this case, the plurality of ribs 15 are formed along the stick that displaces horizontally around the artificial tooth of the stick-attached artificial tooth shade guide 5, so that the amount of force absorbed by the plurality of ribs 15 can be increased.

[0046] 14, the plurality of ribs 15 may be trapezoidal in plan view, with the front dimension of the plurality of ribs 15 being larger than the rear dimension in the front-to-rear direction. In this case, the stick-attached artificial tooth shade guide 5 can be easily replaced.

[0047] 15, the ribs 15 may be trapezoidal in plan view, with the rear dimension of the ribs 15 being larger than the front dimension of the ribs 15. In this case, it is possible to suppress displacement of the stick-attached artificial tooth shade guide 5 in the front-to-back direction.

[0048] 16, the ribs 15 may have a parallelogram shape in plan view with the rear sides of the ribs 15 displaced in the left-right direction. In this case, displacement of the stick of the shade guide 5 with a stick attached to an artificial tooth around the artificial tooth can be suppressed while suppressing displacement of the shade guide 5 with a stick attached to an artificial tooth in the front-to-back direction.

[0049] When the stick-attached artificial tooth shade guide 5 is held in the vertical direction, the multiple ribs 15 do not need to be in contact with the stick of the stick-attached artificial tooth shade guide 5. In this case, the stick-attached artificial tooth shade guide 5 can be easily replaced.

[0050] The plurality of ribs 15 may be in contact with either the left or right side of the stick of the stick-attached artificial tooth shade guide 5 in a state where the stick-attached artificial tooth shade guide 5 is held in the up-down direction.

[0051] The plurality of ribs 15 may be in contact with both the left and right sides of the stick of the stick-attached artificial tooth shade guide 5 in a state where the stick-attached artificial tooth shade guide 5 is held in the up and down direction.

[0052] When the shade guide with stick 5 for artificial teeth is held in the vertical direction, at least a part of the cervical region 51A of the artificial tooth 51 of the shade guide with stick 5 for artificial teeth comes into contact with the cervical region recess 21. This cervical region recess 21 fits tightly against the cervical region of the artificial tooth, recreating an appearance with no gaps, in order to mimic the tight contact structure between natural teeth and gums.

[0053] The recess 21 for the dental cervical region of this embodiment is formed across the upper end 11e of the main body 11 and the raised portion 12. Specifically, the recess 21 for the dental cervical region of this embodiment is formed in a U-shape when viewed from the back surface as shown in Fig. 2. In particular, the recess 21 for the dental cervical region of this embodiment is formed so that the U-shape becomes smaller from the back surface 11c side of the main body 11 toward the front surface 11a side.

[0054] The width of the recess 21 for the tooth cervical region may be designed to fit the shape of the tooth cervical region 51A of the artificial tooth 51 of the commercially available stick-type artificial tooth shade guide 5, but may be set to, for example, 7 to 10 mm, or 8 to 9 mm from the viewpoint of versatility. The inner surface of the recess 21 for the tooth cervical region may be mirror-finished or textured.

[0055] The stick of the stick-attached artificial tooth shade guide 5 is inserted into the stick insertion opening 31. In this embodiment, the main body 11 has a base 41 below the rear side thereof, and the stick insertion opening 31 is formed in this base 41. Since the base 41 is formed integrally with the main body 11 using the same material as the main body 11, the stick insertion opening 31 is also formed integrally with the main body 11 using the same material as the main body 11.

[0056] FIG. 17 is a cross-sectional view of the portion where the stick insertion opening is formed, FIG. 18 is an enlarged view of a portion of FIG. 17, and FIG. 19 is a schematic side view of the shade guide color matching aid holding the stick-attached artificial tooth shade guide 5. Also, FIGS. 20(A) to 20(D) are views showing an example of the stick-attached artificial tooth shade guide 5. As shown in detail in FIGS. 17 to 19, the stick insertion opening 31 of this embodiment is provided at an angle relative to the main body 11. Specifically, when the shade guide color matching aid 1 is viewed from the side, the extension direction of the stick insertion opening 31 is inclined relative to the extension direction of the back surface 11c of the main body 11, i.e., relative to the extension direction of the main body 11. In other words, when the shade guide color matching aid 1 is viewed from the side, the stick insertion opening 31 is not parallel to the main body 11. With the stick insertion opening 31 configured as described above, when the stick 52 of the stick-attached artificial tooth shade guide 5 extends vertically due to its own weight, i.e., extends parallel to the main body 11, the portion inserted into the stick insertion opening 31 is urged in a direction away from the main body 11 by contact with the surface of the stick insertion opening 31 facing the main body 11. Therefore, the stick 52 of the stick-attached artificial tooth shade guide 5 is curved as a whole so as to be convex toward the surface of the main body 11, and the artificial tooth 51 of the stick-attached artificial tooth shade guide 5 is urged to be pressed against the cervical recess 21. This prevents the stick-attached artificial tooth shade guide 5 from falling off from the cervical recess 21, and the tight fit between the cervical recess 21 and the cervical region 51A of the artificial tooth 51 is not impaired. Furthermore, the curvature of the stick 52 of the stick-attached artificial tooth shade guide 5 can be generated regardless of the shape of the stick-attached artificial tooth shade guide 5, so as long as the shape of the stick-attached artificial tooth shade guide 5 allows it to be inserted into the stick insertion port 31, the stick-attached artificial tooth shade guide 5 can be prevented from falling off from the cervical recess 21 regardless of the shape of the stick-attached artificial tooth shade guide 5.

[0057] As in this embodiment, the fall-off prevention mechanism that prevents the stick-attached artificial tooth shade guide 5 from falling off can be configured by the stick insertion port 31. Note that if the fall-off prevention mechanism is configured by other means and the fall-off of the stick-attached artificial tooth shade guide 5 is sufficiently prevented, the stick insertion port 31 does not need to constitute the fall-off prevention mechanism.

[0058] The stick insertion opening 31 can be inclined at an angle of 1 to 5° with respect to the main body 11, for example, and can be inclined at an angle of 3 to 5°. By setting the inclination angle to 1° or more, it is possible to further prevent the stick-attached artificial tooth shade guide 5 from falling off from the cervical recess 21. By setting the inclination angle to 5° or less, it is possible to avoid the stick of the stick-attached artificial tooth shade guide 5 being unable to be inserted into the stick insertion opening 31. When the surface of the stick insertion opening 31 facing the main body 11 and the surface opposite to the surface facing the main body 11 are not parallel in a side view of the shade guide color-matching aid 1, the surface of the stick insertion opening 31 facing the main body 11 can be inclined at an angle of 1 to 5° with respect to the main body 11, and can be inclined at an angle of 3 to 5°.

[0059] Fig. 21 is a plan view of the base 41 in which the stick insertion opening 31 is formed, along with a cross section of the main body, and Fig. 22 is a bottom view of the base 41 in which the stick insertion opening 31 is formed, along with the main body. The stick insertion opening 31 can have a dimension of 0.4 to 1.2 mm in the front-to-back direction, for example. By making the dimension in the front-to-back direction 0.4 mm or more, it is possible to avoid the inability to insert the stick of the artificial tooth shade guide 5 with a stick into the stick insertion opening 31, and by making the dimension 1.2 mm or less, it is possible to easily hold a general artificial tooth shade guide 5 with a stick. The stick insertion opening 31 in this embodiment has a dimension of 0.5 mm in the front-to-back direction.

[0060] The stick insertion opening 31 can have a dimension in the left-right direction of, for example, 4.5 to 10.0 mm. By making the dimension in the left-right direction 4.5 mm or more, it is possible to avoid the situation where the stick of the artificial tooth shade guide with stick 5 cannot be inserted into the stick insertion opening 31. Furthermore, by making the dimension 10.0 mm or less, it is possible to easily hold a general artificial tooth shade guide with stick 5.

[0061] The stick insertion opening 31 may have a widened section 31A that increases the dimension in the front-to-rear direction. Providing such a widened section makes it easier to insert and remove a stick into the stick insertion opening 31.

[0062] There are no particular restrictions on the shape of the widening section 31A that expands the dimension of the stick insertion opening 31 in the front-to-rear direction, but the widening section 31A can have an arc-shaped outline when viewed from the bottom of the base 41, as shown in Figure 21 etc. The widening section 31A can also have an elliptical arc-shaped outline when viewed from the bottom of the base 41.

[0063] 23A to 23F are diagrams showing modified examples of the widened portion 31A. As shown in Fig. 23A, the widened portion 31A can have a rectangular outline when viewed from the bottom of the base 41. The widened portion 31A may also have a trapezoidal outline when viewed from the bottom of the base 41.

[0064] As shown in Figure 23(B), when viewed from the bottom view side of the base 41, the widening portion 31A may have a shape that combines a portion with a rectangular outline (or a portion with a trapezoidal outline) that is continuous with the stick insertion opening 31 and a portion with a circular arc outline (or a portion with an elliptical arc outline) that is continuous with this rectangular outline.

[0065] As shown in Figure 23(C), the widened portion 31A can have a shape with a triangular outline when viewed from the bottom view of the base 41. Alternatively, as shown in Figure 23(D), the widened portion 31A can have a shape that combines a portion with a rectangular outline (or a portion with a trapezoidal outline) that is continuous with the stick insertion opening 31 and a portion with a triangular outline that is continuous with the rectangular outline, when viewed from the bottom view of the base 41.

[0066] As shown in Figure 23(E), when viewed from the bottom view of base 41, widened section 31A has a rectangular outline, and can be rounded at both ends that do not connect to stick insertion slot 31 by chamfering. Alternatively, as shown in Figure 23(F), when viewed from the bottom view of base 41, widened section 31A can have a rectangular outline, and can be tapered at both ends that do not connect to stick insertion slot 31.

[0067] The dimension of the widened portion 31A in the front-rear direction can be 0.5 to 2 times the dimension of the insertion opening in the front-rear direction, and in this embodiment, the dimension is 1 time (0.5 mm in this embodiment).

[0068] The stick insertion opening 31 in the base 41 can be positioned such that the upper end is in contact with the rear surface of the main body 11 or is 0.5 to 3.0 mm from the rear surface of the main body 11, for example.

[0069] The base 41 may have any configuration as long as it can form the stick insertion opening 31. For example, the front-to-rear dimension of the base 41 may be equal to or greater than the front-to-rear dimension of the main body 11, may be 1.5 times or more, or may be twice or more. For example, the front-to-rear dimension of the base 41 may be 20 mm or less. By configuring the front-to-rear dimension in this way, the shade guide color matching aid 1 can be placed in a freestanding state (with the main body 11 extending in the vertical direction).

[0070] When a plurality of stick-attached artificial tooth shade guides 5 are held, the artificial teeth of the plurality of stick-attached artificial tooth shade guides 5 may be in contact with each other or may be spaced apart by 0.1 to 0.5 mm.

[0071] Next, the artificial tooth shade guide with a stick 5 held by the shade guide color matching aid of this embodiment can be a general artificial tooth shade guide with a stick, and can be configured by fixing an artificial tooth 51 made of ceramic, glass ceramic, glass, or polymer material to a stick 52 made of metal or polymer material. Such general artificial tooth shade guides with a stick 5 are sold in such a way that multiple shade guides with a stick are arranged horizontally, vertically, or in a fan shape and stored in a holder. When performing shade taking, the surgeon removes any artificial tooth shade guide with a stick 5 from the holder and uses it.

[0072] In the case of this embodiment, shade taking can be performed using the artificial tooth shade guide with a stick inserted into the shade guide color matching aid of this embodiment. Furthermore, the shade guide color matching aid of this embodiment can be configured as a set with an artificial tooth shade guide with a stick that can be held by the shade guide color matching aid of this embodiment.

[0073] Figures 24(A) and 24(B) show modified examples of the display position of the color tone symbol 13. As shown in Figure 24(A), the color tone symbol 13 may be formed so that the upper end of the color tone symbol 13 and the upper end of the window portion 14 are positioned at the same position in the up-down direction. Also, as shown in Figure 24(B), the color tone symbol 13 may be formed so that the upper end of the color tone symbol 13 is positioned lower than the lower end of the window portion 14.

[0074] The shade guide color matching aid 1 for holding the stick-attached artificial tooth shade guide of the above embodiment comprises a main body 11 whose surface 11a is gum-colored, a tooth cervical recess 21 that comes into contact with the tooth cervical region 51A of the artificial tooth 51 of the stick-attached artificial tooth shade guide 5, and a stick insertion port 31 into which the stick 52 of the stick-attached artificial tooth shade guide 5 is inserted, and has a fall-off prevention mechanism that prevents the stick-attached artificial tooth shade guide 5 from falling off. Therefore, the shade guide color matching aid 1 of the above embodiment exhibits excellent shape compatibility with various types of stick-attached artificial tooth shade guides and functions as a highly versatile gum-colored shade guide holder.

[0075] In the above embodiment, the stick insertion opening 31 is inclined relative to the main body 11, and the fall-off prevention mechanism is constituted by the stick insertion opening 31. With this configuration, when the stick 52 of the stick-attached artificial tooth shade guide 5 is extended vertically due to its own weight, i.e., when it is extended parallel to the main body 11, the portion inserted into the stick insertion opening 31 is urged away from the main body 11 by contact with the surface of the stick insertion opening 31 facing the main body 11. Therefore, the stick 52 of the stick-attached artificial tooth shade guide 5 is curved convexly toward the surface of the main body 11, and the artificial tooth 51 of the stick-attached artificial tooth shade guide 5 is urged to be pressed against the cervical recess 21. This prevents the stick-attached artificial tooth shade guide 5 from falling off from the cervical recess 21, and the tight fit between the cervical recess 21 and the cervical region 51A of the artificial tooth 51 is not impaired. Furthermore, the curvature of the stick 52 of the stick-attached artificial tooth shade guide 5 can be generated regardless of the shape of the stick-attached artificial tooth shade guide 5, so as long as the shape of the stick-attached artificial tooth shade guide 5 allows it to be inserted into the stick insertion port 31, the stick-attached artificial tooth shade guide 5 can be prevented from falling off from the cervical recess 21 regardless of the shape of the stick-attached artificial tooth shade guide 5.

[0076] In the above embodiment, the window 14 is formed below the cervical recess 21. Therefore, the color symbol notation written on the stick-attached artificial tooth shade guide 5 can be confirmed without attaching or detaching the stick-attached artificial tooth shade guide 5 to or from the shade guide color matching aid 1.

[0077] In the above embodiment, multiple windows 14 are formed, and ribs 15 are formed between adjacent windows 14 on the back surface 11c of the main body 11. Therefore, the stick-attached artificial tooth shade guide 5 can be held in the up-down direction regardless of the stick width of the held stick-attached artificial tooth shade guide 5. Therefore, even if a large force in the left-right direction is applied to the shade-guide color matching aid 1 holding the stick-attached artificial tooth shade guide 5, the left-right movement of the stick of the stick-attached artificial tooth shade guide 5 is restricted by the multiple ribs 15. Therefore, the stick of the stick-attached artificial tooth shade guide 5 is prevented from falling off from the cervical recess 21 due to a large left-right displacement of the stick.

[0078] In the above embodiment, the number of windows 14 is 3 to 6. This makes it easy to study the shade taking when the central incisors, lateral incisors, and canines are arranged, and also makes it easy to study the shade taking for the six front teeth that are visible when the mouth is opened.

[0079] In the above embodiment, the stick insertion opening 31 is provided at an inclination of 1 to 5 degrees relative to the main body 11. This makes it possible to further prevent the shade guide with a stick 5 from falling off from the cervical recess 21, and also to avoid situations where the stick of the shade guide with a stick 5 cannot be inserted into the stick insertion opening 31.

[0080] In the above embodiment, the dimension of the stick insertion opening 31 in the front-to-rear direction is 0.4 to 1.2 mm. This prevents the stick of the stick-attached artificial tooth shade guide 5 from being unable to be inserted into the stick insertion opening 31, and also makes it possible to easily hold a general stick-attached artificial tooth shade guide 5.

[0081] In the above embodiment, the stick insertion slot 31 has a widened portion 31A that expands the size in the front-rear direction. This makes it easy to insert and remove a stick into the stick insertion slot 31.

[0082] In the above embodiment, the plurality of ribs 15 are configured to form narrow portions where the intervals between each other are narrowed.

[0083] A method of shade taking using the shade guide color matching aid 1 of the above embodiment can be, for example, a method of performing shade taking using an artificial tooth shade guide with a stick inserted into the shade guide color matching aid.

[0084] The shade guide color matching aid 1 of the above embodiment can be provided as a set with an artificial tooth shade guide with a stick. [Industrial Applicability]

[0085] According to the present invention, it is possible to provide a shade guide color matching aid that exhibits excellent shape adaptability to various types of stick-type artificial tooth shade guides and functions as a highly versatile gum color shade guide holder. [Explanation of symbols]

[0086] 1: Shade guide color matching aid 11: Main body 11a: Surface 11b:Top surface 11c: Back 11d: Both ends 11e:Top edge 12: Protuberance 12a:Front 12b: Upper end 12c: Connection surface 13: Color symbol 14: Window section 15: Rib 21: Cervical recess 31: Stick insertion slot 41: Base 5: Artificial teeth shade guide with stick 51: Artificial teeth 51A: Cervical region 52: Stick

Claims

1. A shade guide color matching aid that holds a stick-attached artificial tooth shade guide, a main body having a gum-colored surface; a recess for a cervical portion of the stick-attached artificial tooth shade guide that comes into contact with the cervical portion of the artificial tooth; a stick insertion port into which the stick of the stick-attached artificial tooth shade guide is inserted, A color matching aid for a shade guide, characterized by having a fall-off prevention mechanism that prevents the stick-attached artificial tooth shade guide from falling off.

2. The stick insertion port is provided at an angle to the main body, 2. The shade guide color matching aid according to claim 1, wherein the fall-off prevention mechanism is configured by a stick insertion port.

3. 3. The shade guide color-matching aid according to claim 2, wherein a window is formed below the cervical recess.

4. A plurality of windows are formed, 4. The shade guide color-matching aid according to claim 3, wherein a rib is formed on the rear surface of the main body between adjacent window portions.

5. 5. The shade guide color-matching aid according to claim 4, wherein the number of windows is 3 to 6.

6. 6. The shade guide color-matching aid according to claim 2, wherein the stick insertion opening is provided at an angle of 1 to 5 degrees relative to the main body.

7. 6. The shade guide color-matching aid according to claim 2, wherein the stick insertion opening has a dimension of 0.4 to 1.2 mm in the front-to-rear direction.

8. 6. The shade guide color-matching aid according to claim 2, wherein the stick insertion opening has a widening portion that widens the dimension in the front-to-rear direction.

9. The back of the main body has multiple ribs formed on it.

2. The shade guide color matching aid according to claim 1, wherein the fall-off prevention mechanism is constituted by a plurality of ribs.

10. 10. The color-matching aid for a shade guide according to claim 9, wherein the plurality of ribs are configured to form narrow portions where the intervals between the ribs are narrowed.

11. A method for performing shade taking using a stick-attached artificial tooth shade guide inserted into the shade guide color matching aid according to claim 1.

12. A set comprising the shade guide color matching aid according to claim 1 and an artificial tooth shade guide with a stick.

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