Combined layered seal guide plate

Abstract

The invention relates to the field of stomatology, in particular to a combined layered seal guide plate which comprises a base guide plate, a dentin layer seal guide plate and an enamel layer seal guide plate, a guide bearing piece is arranged in a preset area of the base guide plate, and a first moving piece is arranged on the outer surface of the dentin layer seal guide plate; a second moving part is arranged on the outer surface of the enamel layer seal guide plate; the dentin layer seal guide plate and the enamel layer seal guide plate are sequentially matched with the guide bearing part in the use process; according to the invention, the unified bearing guide piece is arranged on the substrate guide plate, and the subsequent dentin layer seal guide plate and enamel layer seal guide plate are guided and positioned by using the same bearing guide piece, so that the problem of inaccurate positioning between layers possibly caused by lack of common positioning reference of the traditional independent layered guide plate is effectively solved; therefore, the in-place accuracy and consistency of the seal guide plates of all the repairing layers in the repairing process are improved.

Description

Technical Field

[0001] The present invention relates to the field of oral medicine, and in particular to a combined layered seal guide plate, which is particularly suitable for dentin-enamel layered restoration based on fluid resin. Background Art

[0002] In modern dental restorations, resin materials are widely used for direct restoration of tooth defects due to their excellent aesthetics and biocompatibility. To improve the accuracy and efficiency of restorations while reducing operational complexity, the use of digital virtual wax-up designs and 3D-printed guides for fluid resins effectively addresses the technical challenges of direct resin restorations, which are often difficult, time-consuming, and often lack high-precision results.

[0003] For direct resin restorations involving dentin, in order to obtain a dentin-enamel layering effect close to that of natural teeth, it is necessary to design a virtual preparation of the target restoration and generate a layered stamp guide based on the virtual preparation morphology and the virtual wax-up. However, traditional layered stamp guides have the problem of inaccurate positioning. After the restoration is completed guided by the first layer of guide, if there is a small amount of overflow of the restorative material or morphological deviation, in the absence of clear positioning instructions, it may interfere with the precise positioning of the subsequent second layer of guide, resulting in poor molding effect of the final restoration. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that traditional layered seal guides have no unified fixing components, low positioning repeatability and material waste. The purpose is to provide a combined layered seal guide, which improves the accuracy and consistency of the positioning of the seal guides of each repair layer during the repair process.

[0005] The present invention is achieved through the following technical solutions: A combined layered seal guide plate, comprising: A base guide plate, the base guide plate is used to contact the adjacent teeth of the affected tooth to provide retention force, the base guide plate exposes the labial side, the incisal end and part of the lingual and palatal area of the affected tooth through the repair opening, and a guide member is provided in a predetermined area; a dentin layer stamp guide plate, the inner surface of which matches the predetermined dentin layer shape of the target restoration, and an outer surface of which is provided with a first moving member, the first moving member being adapted to the guide member for guiding the dentin layer stamp guide plate to slide to a predetermined dentin layer formation position of the restoration opening; an enamel layer stamp guide plate, the inner surface of which matches the predetermined enamel layer of the target restoration, and an outer surface of which is provided with a second moving member, the second moving member being adapted to the guide member for guiding the enamel layer stamp guide plate to slide to a predetermined enamel layer formation position of the restoration opening; Wherein, the dentin layer stamp guide plate and the enamel layer stamp guide plate are successively matched with the guiding member during use.

[0006] Specifically, the predetermined area includes the labial and buccal regions of the mesial adjacent tooth of the affected tooth, and / or the labial and buccal regions of the distal adjacent tooth of the affected tooth.

[0007] Optionally, the base guide plate at least partially covers the lingual or palatal side of the affected tooth.

[0008] Optionally, the left and right outer side walls of the dentin layer stamp guide plate are in contact with or closely adapted to the left and right inner side walls of the restoration opening during the sliding seating process, and the left and right outer side walls of the enamel layer stamp guide plate are in contact with or closely adapted to the left and right inner side walls of the restoration opening during the sliding seating process.

[0009] Specifically, a guide rail groove in the crown - root direction is provided in the guiding member; The first moving member includes a first slider portion and a first connecting portion. The first slider portion slides in the guide rail groove in the crown - root direction, and the first connecting portion connects the first slider portion and the dentin layer stamp guide plate; The second moving member includes a second slider portion and a second connecting portion. The second slider portion slides in the guide rail groove in the crown - root direction, and the second connecting portion connects the second slider portion and the enamel layer stamp guide plate.

[0010] Optionally, the first slider portion has a first predetermined length in the crown - root direction, and the first predetermined length is configured to define the maximum sliding stroke of the first moving member. When the first moving member is at the maximum sliding stroke, the inner surface of the dentin layer stamp guide plate is positioned at a predetermined position of the dentin layer of the target restoration; The second slider portion has a second predetermined length in the crown - root direction, and the second predetermined length is configured to define the maximum sliding stroke of the second moving member. When the second moving member is at the maximum sliding stroke, the inner surface of the enamel layer stamp guide plate is positioned at a predetermined position of the enamel layer of the target restoration.

[0011] Optionally, the guide rail groove is a dovetail groove or a T - shaped groove, the first slider portion and the second slider portion are a dovetail block and a T - shaped block adapted to the guide rail groove respectively, and the first connecting portion and the second connecting portion are connecting rods.

[0012] A production method of a combined layered stamp guide plate for producing the combined layered resin stamp guide plate as described in any one of the above, the production method includes: Based on the patient's dentition morphology data, a digital prototype of the base guide is generated; and a restoration opening and a guide member defining the area to be restored of the affected tooth are designed and formed on the digital prototype of the base guide to generate a digital base guide; A digital dentin seal guide is generated for the dentin layer of the affected tooth. The dentin seal guide has an inner surface that matches the predetermined restoration shape of the dentin layer. A first moving part that is compatible with the guide is integrated on the outer surface of the dentin seal guide. The first moving part is used to guide the dentin seal guide to be positioned within the restoration opening. A digital enamel layer stamp guide is generated for the enamel layer of the affected tooth. The enamel layer stamp guide has an inner surface that matches the predetermined restoration shape of the enamel layer. A second moving part that is compatible with the guide is integrated on the outer surface of the enamel layer stamp guide. The second moving part is used to guide the enamel layer stamp guide to be positioned within the restoration opening and above the formed dentin layer. After completing the aforementioned digital design, the physical components of the base guide, the dentin layer stamp guide, and the enamel layer stamp guide are manufactured.

[0013] Specifically, the method for generating a digital dentin layer seal guide includes: Based on the virtual preparation shape of the affected tooth, a digital prototype of the dentin layer seal guide is generated, whose inner surface matches the virtual preparation shape; Perform preliminary adaptation modification on the digital prototype of the dentin seal guide based on the digital base guide; A digital model of a first moving part adapted to the guide member is designed and integrated on the outer surface of the digital prototype of the dentin layer seal guide after preliminary trimming; The process of positioning the digital prototype of the dentin layer seal guide under the guidance of the first moving part is simulated, and based on the simulation results, the digital prototype of the dentin layer seal guide is finally cut without affecting the inner surface morphology of the corresponding restoration to eliminate the steric hindrance during the positioning process; Obtain a digital dentin stamp guide.

[0014] Specifically, the method for generating a digital enamel layer seal guide includes: Based on the virtual wax-up morphology of the affected tooth, a digital prototype of the enamel layer seal guide is generated, whose inner surface matches the virtual wax-up morphology; Perform preliminary adaptation adjustments on the digital prototype of the enamel layer seal guide based on the digital base guide; Designing and integrating a digital model of a second moving part adapted to the guide part on the outer surface of the digital prototype of the enamel layer seal guide after preliminary trimming; Simulate the positioning process of the digital prototype of the enamel layer stamp guide under the guidance of the second moving part, and based on the simulation results, without affecting the inner surface morphology of its corresponding restoration, finally cut the digital prototype of the enamel layer stamp guide to eliminate the spatial hindrance during the positioning process; Obtain a digital enamel layer stamp guide.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects: By providing a unified guiding part on the base guide plate in the present invention, and enabling the subsequent dentin layer stamp guide and enamel layer stamp guide to be guided and positioned by this same guiding part, it effectively overcomes the problem that the traditional independent layered guide plates may cause inaccurate positioning between layers due to the lack of a common positioning reference, thereby improving the accuracy and consistency of the positioning of each restoration layer stamp guide during the restoration process.

[0016] By enabling the dentin layer stamp guide and the enamel layer stamp guide to share the same base guide plate and its retention structure and guiding system, the present invention avoids manufacturing independent guide plates with complete retention components for each restoration level separately, effectively reducing the overall material consumption of the restoration guide plate system, thereby reducing the related manufacturing costs and improving the economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, are used to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention, and the drawings are included in this specification and form a part of this specification, and do not constitute a limitation on the embodiments of the present invention.

[0018] Figure 1 is a schematic structural diagram of a combined layered stamp guide according to the present invention.

[0019] Figure 2 is a schematic structural diagram of the base guide plate according to the present invention.

[0020] Figure 3 is a schematic structural diagram of the dentin layer stamp guide according to the present invention.

[0021] Figure 4 is a schematic structural diagram of the enamel layer stamp guide according to the present invention.

[0022] Figure 5 is a schematic diagram of the positioning of the base guide plate according to the present invention.

[0023] Figure 6 is a schematic diagram of the positioning of the base guide plate and the dentin layer stamp guide according to the present invention.

[0024] Figure 7 It is a schematic diagram of the seating of the base guide plate and the enamel stamp guide plate according to the present invention.

[0025] Figure 8 It is the virtual preparation form of the target restoration according to the present invention.

[0026] Figure 9 It is the virtual wax pattern form of the target restoration according to the present invention.

[0027] Reference numerals: 1 - base guide plate, 11 - guiding member, 2 - dentin layer stamp guide plate, 21 - first moving member, 3 - enamel layer stamp guide plate, 31 - second moving member. Detailed Description of the Invention

[0028] To make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant content and do not limit the present invention.

[0029] In addition, it should be noted that for the sake of convenience of description, only parts related to the present invention are shown in the drawings.

[0030] In this application, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] In this application, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0032] Without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and embodiments.

[0033] Embodiment 1 AsFigure 1 As shown, a combined layered stamp guide disclosed in this embodiment has a working principle briefly described as follows: two layered stamp guides utilize the guiding members 11 provided on the base guide 1 to achieve precise and repeatable sliding and positioning through their respective moving members (movable components cooperating with the guiding members 11), thereby assisting in completing the layered restoration of teeth.

[0034] As Figure 2 and Figure 5 shown, the base guide 1 is used to contact the adjacent teeth of the affected tooth to provide retention force. The base guide 1 exposes the labial, incisal, and part of the palatal regions of the affected tooth through a restoration opening, and guiding members 11 are provided in a predetermined area.

[0035] There is a restoration opening (i.e., an open area with a specific shape) on the base guide 1, which exposes the labial side (i.e., the side facing the lips), the incisal part (i.e., the cutting edge or tip of the tooth), and part of the palatal region (i.e., the side of the tooth close to the tongue or the palate) of the affected tooth that needs to be restored. The restoration work will be carried out in this exposed area.

[0036] The guiding members 11 provided in the predetermined area of the base guide 1 are the key structures for the subsequent dentin layer and enamel layer stamp guides 3 to achieve precise guidance and positioning. The predetermined area includes the labial and buccal regions of the mesial adjacent tooth of the affected tooth, and / or the labial and buccal regions of the distal adjacent tooth of the affected tooth. The predetermined area can be located in the labial and buccal regions (i.e., the side facing the lips or cheeks) of the mesial adjacent tooth (i.e., the adjacent tooth close to the facial midline) of the affected tooth, and / or the labial and buccal regions of the distal adjacent tooth (i.e., the adjacent tooth away from the facial midline) of the affected tooth, which means the guiding members 11 can be flexibly arranged on the specific surfaces of one or two adjacent teeth according to clinical needs. Additionally, in order to further enhance the stability and fitting degree of the base guide 1, it is designed to at least partially cover the lingual side (the inner side of the lower tooth, facing the tongue) or the palatal side (the inner side of the upper tooth, facing the palate) of the affected tooth.

[0037] As Figure 3 and Figure 6 shown, the inner surface (i.e., the side facing the tooth tissue surface) of the dentin layer stamp guide 2 is shaped to match the predetermined shape of the dentin layer of the target restoration. The outer surface is provided with a first moving member 21, whose function is to guide the dentin layer stamp guide 2 to slide along the guiding member 11. The first moving member 21 is adapted to the guiding member 11 and is used to guide the dentin layer stamp guide 2 to slide to the predetermined dentin layer forming position of the restoration opening.

[0038] To further improve the positioning accuracy and stability, the left and right outer walls (i.e., the sides) of the dentin layer stamp guide 2 can be designed to come into contact with or achieve a tight fit with the left and right inner walls of the restoration opening on the base guide 1 during the sliding and positioning process.

[0039] AsFigure 4 and Figure 7 As shown in Figure 7 , the inner surface of the enamel layer stamp guide plate 3 matches the predetermined shape of the enamel layer of the target restoration. The outer surface of the enamel layer stamp guide plate 3 is provided with a second moving member 31, whose function is to guide the enamel layer stamp guide plate 3 to slide along the guiding member 11. The second moving member 31 is adapted to the guiding member 11 and is used to guide the enamel layer stamp guide plate 3 to slide to the predetermined enamel layer forming position of the restoration opening; In order to further improve the seating accuracy and stability, the left and right outer side walls of the enamel layer stamp guide plate 3 are in contact with or closely adapted to the left and right inner side walls of the restoration opening during the sliding seating process.

[0040] The sequential cooperation of the dentin layer stamp guide plate 2 and the enamel layer stamp guide plate 3 with the guiding member 11 during use. That is, in actual use, the dentin layer stamp guide plate 2 and the enamel layer stamp guide plate 3 cooperate with the guiding member 11 on the base guide plate 1 successively and sequentially to complete the forming of the restoration materials of their respective layers, thereby realizing the sharing of the same guiding member 11.

[0041] In terms of operation, first, the base guide plate 1 is stably fixed on the adjacent tooth of the affected tooth, and the restoration opening thereon precisely exposes the tooth area to be restored. Then, the dentin layer stamp guide plate 2 cooperates with the guiding member 11 of the base guide plate 1 through its first moving member 21 and slides to the predetermined position for forming the dentin layer resin. After the dentin layer is cured, the dentin layer stamp guide plate 2 is removed. Next, the enamel layer stamp guide plate 3 cooperates with the same guiding member 11 through its second moving member 31 and slides to the predetermined position (covering the already formed dentin layer) for forming the enamel layer resin. In this way, the precise guiding and shaping of the restoration materials for the two layers of dentin and enamel are realized.

[0042] Embodiment 2 In this embodiment, the guiding member 11 and the moving member are further described.

[0043] A guide rail groove in the crown - root direction is provided inside the guiding member 11; the crown - root direction is the direction from the top of the tooth crown towards the root tip of the tooth, which can generally be understood as the vertical direction, and the guide rail groove is the track for the sliding guidance of the slider part in the moving member. The guide rail groove adopts a dovetail groove or a T - shaped groove, which can provide stable and unidirectional sliding guidance and prevent the slider from disengaging in a non - predetermined direction.

[0044] The first moving member 21 includes a first slider part and a first connecting part. The first slider part slides in the guide rail groove in the crown - root direction, and the first connecting part connects the first slider part and the dentin layer stamp guide plate 2; The first slider portion has a first predetermined length in the crown - root direction, and the first predetermined length is configured to define the maximum sliding stroke of the first moving member 21 (i.e., the farthest distance it can slide). When the first moving member 21 is at the maximum sliding stroke, the inner surface of the dentin - layer stamping guide 2 is positioned at a predetermined position of the dentin layer of the target restoration.

[0045] When the first moving member 21 slides to its maximum stroke, the inner surface of the dentin - layer stamping guide 2 can be accurately positioned at a predetermined position of the dentin layer of the target restoration, that is, by controlling the length of the slider portion, the final parking position of the dentin - layer stamping guide 2 is accurately controlled, so as to ensure that the dentin restoration material can be accurately formed according to the predetermined design.

[0046] The second moving member 31 includes a second slider portion and a second connecting portion. The second slider portion slides in the guide rail groove in the crown - root direction, and the second connecting portion connects the second slider portion and the enamel - layer stamping guide 3; The second slider portion has a second predetermined length in the crown - root direction, and the second predetermined length is configured to define the maximum sliding stroke of the second moving member 31. When the second moving member 31 is at the maximum sliding stroke, the inner surface of the enamel - layer stamping guide 3 is positioned at a predetermined position of the enamel layer of the target restoration.

[0047] When the second moving member 31 slides to its maximum stroke, the inner surface of the enamel - layer stamping guide 3 can be accurately positioned at a predetermined position of the enamel layer of the target restoration (usually on the formed dentin layer), thus ensuring that the enamel restoration material can be accurately formed according to the predetermined design.

[0048] The first slider portion and the second slider portion are respectively a dovetail block and a T - shaped block adapted to the guide rail groove. If the guide rail groove is a dovetail groove, the first slider portion / second slider portion is a dovetail block accordingly; if the guide rail groove is a T - shaped groove, the first slider portion / second slider portion is a T - shaped block.

[0049] The first connecting portion and the second connecting portion are connecting rods, which accurately transmit the movement of the slider portion to the stamping guide.

[0050] Embodiment III This embodiment discloses a complete method flow for producing the combined - layer resin stamping guide of the foregoing embodiment. The basic process is as follows: First, design a base guide 1 with a repair opening and a guiding member 11 according to the specific oral data of the patient; then, respectively design stamping guides with specific inner - surface morphologies and integrated corresponding moving members for the dentin layer and the enamel layer; finally, based on these completed digital designs, manufacture the entity of the guide system.

[0051] The specific production steps include: Based on the dentition morphological data of the patient (such as the three-dimensional data obtained by oral scanning), a digital prototype of the base guide plate 1 is generated; and a restoration opening and a guiding member 11 that define the area to be restored of the diseased tooth are designed and formed on the digital prototype of the base guide plate 1, and then the digital prototype of the base guide plate 1 is imported into engineering design software (such as CAD) and merged with the guiding member 11 to form a complete base guide plate 1.

[0052] For the dentin layer of the diseased tooth, a digital dentin layer stamping guide plate 2 is generated. The dentin layer stamping guide plate 2 has an inner surface that matches the predetermined restoration shape of the dentin layer, and a first moving member 21 adapted to the guiding member 11 is integrated on the outer surface of the dentin layer stamping guide plate 2. The first moving member 21 is used to guide the positioning of the dentin layer stamping guide plate 2 within the restoration opening. For the enamel layer of the diseased tooth, a digital enamel layer stamping guide plate 3 is generated. The enamel layer stamping guide plate 3 has an inner surface that matches the predetermined restoration shape of the enamel layer, and a second moving member 31 adapted to the guiding member 11 is integrated on the outer surface of the enamel layer stamping guide plate 3. The second moving member 31 is used to guide the positioning of the enamel layer stamping guide plate 3 within the restoration opening and above the already formed dentin layer. After completing the digital design of the aforementioned base guide plate 1, dentin layer stamping guide plate 2, and enamel layer stamping guide plate 3, physical components of the base guide plate 1, dentin layer stamping guide plate 2, and enamel layer stamping guide plate 3 are fabricated.

[0053] Among them, the method for generating the digital dentin layer stamping guide plate 2 includes: As Figure 8 shown, based on the virtual preparation body shape of the diseased tooth, a digital prototype of the dentin layer stamping guide plate 2 with an inner surface matching the virtual preparation body shape is generated; first, it is necessary to operate in dental design software. Based on the virtual preparation body shape obtained after virtual preparation of the diseased tooth (i.e., simulating the tooth body shape after a dentist prepares the tooth in the computer), a digital prototype of the dentin layer stamping guide plate 2 is generated.

[0054] The digital prototype of the dentin layer stamping guide plate 2 is preliminarily trimmed for adaptability according to the digital base guide plate 1; the digital prototype of the dentin layer stamping guide plate 2 generated in the previous step and the previously designed and completed digital base guide plate 1 are imported into engineering design software together.

[0055] According to the precise exposed shape of the restoration opening on the digital base guide plate 1, the digital prototype of the dentin layer stamping guide plate 2 is preliminarily adjusted in shape. Usually, it involves cutting or Boolean operations, and the purpose is to ensure that the outer contour of the dentin layer stamping guide plate 2 can adapt to the operating space provided by the base guide plate 1.

[0056] On the outer surface of the digital prototype of the dentin layer stamp guide plate 2 after preliminary trimming, design and integrate the digital model of the first moving part 21 adapted to the guiding part 11; on the outer surface of the digital prototype of the dentin layer stamp guide plate 2 after preliminary trimming, according to the position and morphological characteristics of the guiding part 11 on the digital base guide plate 1, design and generate the digital model of the first moving part 21 at an appropriate spatial position. Subsequently, merge the digital model of the first moving part 21 with the digital prototype of the dentin layer stamp guide plate 2 to form an integral component.

[0057] To ensure accuracy and unobstructed seating during actual use, virtual seating simulation is required. Simulate the seating process of the digital prototype of the dentin layer stamp guide plate 2 guided by the first moving part 21 (i.e., along the guide rail groove direction of the guiding part 11), and based on the simulation results, without affecting the inner surface morphology of its corresponding restoration form, perform final trimming on the digital prototype of the dentin layer stamp guide plate 2 to eliminate spatial hindrance during the seating process (i.e., the guide plate collides or interferes with surrounding structures during sliding or final seating). After completing all the above design, trimming, integration, and simulation optimization steps, the digital dentin layer stamp guide plate 2 that meets the design requirements is obtained, and then it can be directly used for subsequent physical component production.

[0058] Similar to the generation method of the digital dentin layer stamp guide plate 2, the generation method of the digital enamel layer stamp guide plate 3 includes: As Figure 9 shown, based on the virtual wax pattern morphology of the diseased tooth, generate a digital prototype of the enamel layer stamp guide plate 3 with an inner surface matching the virtual wax pattern morphology; Perform preliminary fitting trimming on the digital prototype of the enamel layer stamp guide plate 3 according to the digital base guide plate 1; On the outer surface of the digital prototype of the enamel layer stamp guide plate 3 after preliminary trimming, design and integrate the digital model of the second moving part 31 adapted to the guiding part 11; Simulate the seating process of the digital prototype of the enamel layer stamp guide plate 3 guided by the second moving part 31, and based on the simulation results, without affecting the inner surface morphology of its corresponding restoration form, perform final trimming on the digital prototype of the enamel layer stamp guide plate 3 to eliminate spatial hindrance during the seating process; Obtain the digital enamel layer stamp guide plate 3.

[0059] In the description of this specification, the description with reference to terms such as "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.

[0060] In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0061] Those skilled in the art should understand that the above embodiments are merely for clearly explaining the present invention and are not intended to limit the scope of the present invention. For those skilled in the art, other changes or modifications can be made based on the above invention, and these changes or modifications are still within the scope of the present invention.

Claims

1. A combined hierarchical seal guide plate, characterized in that, Comprising: A base guide plate (1) for contacting the adjacent tooth of the affected tooth to provide retention force. The base guide plate (1) exposes the labial, incisal, and part of the lingual and palatal regions of the affected tooth through a restoration opening, and a guiding member (11) is provided in a predetermined area; A dentin layer stamping guide plate (2) whose inner surface shape matches the predetermined shape of the dentin layer of the target restoration. A first moving member (21) is provided on its outer surface, and the first moving member (21) is adapted to the guiding member (11) for guiding the dentin layer stamping guide plate (2) to slide to a predetermined dentin layer forming position of the restoration opening; An enamel layer stamping guide plate (3) whose inner surface shape matches the predetermined shape of the enamel layer of the target restoration. A second moving member (31) is provided on its outer surface, and the second moving member (31) is adapted to the guiding member (11) for guiding the enamel layer stamping guide plate (3) to slide to a predetermined enamel layer forming position of the restoration opening; Wherein, the dentin layer stamping guide plate (2) and the enamel layer stamping guide plate (3) are sequentially matched with the guiding member (11) during use.

2. The combined hierarchical stamp guide plate according to claim 1, wherein The predetermined area includes the labial and buccal regions of the mesial adjacent tooth of the affected tooth, and / or the labial and buccal regions of the distal adjacent tooth of the affected tooth.

3. The combined layered stamp guide plate according to claim 1, characterized in that, The base guide plate (1) at least partially covers the lingual or palatal side of the affected tooth.

4. The combined hierarchical seal guide plate according to claim 1, characterized in that The left and right outer walls of the dentin layer stamping guide plate (2) contact or are closely adapted to the left and right inner walls of the restoration opening during the sliding seating process.

5. The combined hierarchical seal guide plate according to claim 1, characterized in that, A guide rail groove along the crown-root direction is provided in the guiding member (11); The first moving member (21) includes a first slider portion and a first connecting portion. The first slider portion slides along the crown-root direction in the guide rail groove, and the first connecting portion connects the first slider portion and the dentin layer stamping guide plate (2).

6. The modular hierarchical stamp guide plate according to claim 5, characterized in that, The second moving member (31) includes a second slider portion and a second connecting portion. The second slider portion slides along the crown-root direction in the guide rail groove, and the second connecting portion connects the second slider portion and the enamel layer stamping guide plate (3).

7. The combined layered stamp guide plate according to claim 6, characterized in that, The first slider portion has a first predetermined length in the crown-root direction, and the first predetermined length is configured to define the maximum sliding stroke of the first moving member (21). When the first moving member (21) is at the maximum sliding stroke, the inner surface of the dentin layer stamping guide plate (2) is positioned at a predetermined position of the dentin layer of the target restoration.

8. The combined hierarchical stamp guide plate according to claim 7, characterized in that The second slider portion has a second predetermined length in the crown-root direction, and the second predetermined length is configured to define the maximum sliding stroke of the second moving member (31). When the second moving member (31) is at the maximum sliding stroke, the inner surface of the enamel layer stamping guide plate (3) is positioned at a predetermined position of the enamel layer of the target restoration.

9. The combined hierarchical seal guide plate according to claim 6, characterized in that, The guide rail groove is a dovetail groove or a T-shaped groove, and the first slider portion and the second slider portion are a dovetail block and a T-shaped block adapted to the guide rail groove respectively.

10. A combined layered seal guide plate according to claim 9, characterized in that, The first connecting portion and the second connecting portion are connecting rods.

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