Gingival wall lifting device

Abstract

A gingival wall lifting device belongs to the field of medical instruments. The forming piece comprises a forming piece body, a positioning part and a detachable connecting device, the left end and the right end of the forming piece body are detachably connected through the detachable connecting device, and the positioning part is arranged at the bottom of the forming piece body. The detachable connecting device aims at solving the problems that an existing forming piece applied to gingival wall lifting operation is single in model, cannot meet individualized adjacent face hole depth and hole type, and cannot be tightly attached to the edge of a hole after being placed, so that dissection adaptability is insufficient, and the moisture insulation effect is uncontrollable. Clinical doctors are allowed to dynamically adjust the wrapping diameter and radian of the formed sheet according to the depth and width of adjacent hole shapes and the constriction degree of tooth necks, and individual tooth anatomical features are accurately matched.

Description

Technical Field

[0001] The present invention relates to a gingival wall elevation device, belonging to the field of medical devices. Background Art

[0002] As a common technique for repairing proximal caries and subgingival defects, the core objective of gingival wall elevation is to reconstruct the gingival wall boundary of subgingival defects through adhesive resin, thereby providing stable mechanical support for indirect restorations and effectively controlling the moisture isolation environment during the operation. However, the high uncertainty of dentin bonding effect in clinical operations is limited by surface topography, adhesive properties, operating techniques, and the long-term stability of marginal sealing. Therefore, the role of the matrix band as an auxiliary tool is particularly crucial. However, from the clinical manifestations, the design defects of existing matrix bands significantly restrict the clinical success rate and operating efficiency of this technique, not only increasing the technical sensitivity of gingival wall elevation, but also possibly leading to complications such as marginal microleakage of restorations, secondary caries, and even restoration detachment, as follows:

[0003] 1. Lack of model diversity and anatomical adaptability:

[0004] Traditional matrix bands usually adopt a standardized design with fixed dimensions such as a single thickness or curvature, which is difficult to match the complex three-dimensional characteristics of individualized proximal cavity types. Proximal caries lesions often accompany cervical constriction and height of contour of the tooth, resulting in a gap between the matrix band and the cavity margin, and unable to achieve a tight fit. This problem is particularly prominent in cases of deep subgingival caries, which is likely to cause leakage of adhesive resin or marginal microleakage, directly affecting the long-term sealing of restorations.

[0005] 2. Structural design defects leading to moisture isolation failure:

[0006] Although the "ring type" or rigid frame design of some matrix bands is convenient for initial positioning, it lacks the ability of elastic deformation. After the placement of the rubber dam clamp, the matrix band often warps due to occlusal pressure or gingival resistance, destroying its contact tightness with the tooth tissue. In addition, such a design cannot conform to the physiological curvature of the proximal gingival margin, resulting in an increased risk of saliva or gingival sulcus fluid contamination during the operation, seriously affecting the immediate stability of the bonding interface.

[0007] 3. Poor operation compatibility and low efficiency:

[0008] Existing matrix bands cannot take into account the coordinated operation of gingival wall elevation and the rubber dam system. For example, when placing the matrix band, it is necessary to repeatedly adjust its position to avoid the rubber dam clamp, and even the moisture isolation step needs to be completed in multiple times, prolonging the operation time and increasing the risk of cross-infection. At the same time, the size adjustment range of the matrix band is limited, such as being unable to expand to cover multiple tooth positions or deep subgingival defects, forcing clinicians to rely on manual cutting or stacking, further reducing the accuracy and repeatability of the operation.

[0009] Therefore, there is an urgent need to propose a new gingival wall elevation device to solve the above technical problems. Summary of the Invention

[0010] The research and development purpose of the present invention is to solve the problems that the existing matrix bands applied to gingival wall elevation have a single model, cannot meet the individual proximal caries depth and cavity type, and cannot closely adhere to the cavity edge after placement, resulting in insufficient anatomical adaptability and uncontrollable moisture isolation effect. A brief overview of the present invention is given below to provide a basic understanding of certain aspects of the present invention. It should be understood that this overview is not an exhaustive overview of the present invention. It is not intended to identify the key or important parts of the present invention, nor is it intended to limit the scope of the present invention.

[0011] Technical solution of the present invention:

[0012] The gingival wall elevation device includes a matrix band, a positioning part and a detachable connection device. The left and right ends of the matrix band are detachably connected through the detachable connection device, and the bottom of the matrix band has a positioning part.

[0013] Preferably: The detachable connection device is a ligature wire, and the left and right ends of the matrix band are connected by ligature.

[0014] Preferably: The detachable connection device includes a protrusion and a groove. The two ends of the matrix band are respectively provided with a protrusion and a groove, and the protrusion is clamped in the groove.

[0015] Preferably: The number of the grooves is multiple and arranged side by side.

[0016] Preferably: The protrusion includes a positioning post and a clamping cap. The clamping cap is installed on the matrix band through the positioning post, and the clamping cap is clamped in the groove through the positioning post.

[0017] Preferably: The groove is a through-hole groove.

[0018] Preferably: The top of the matrix band has a folding compensation part.

[0019] Preferably: The matrix band and the folding compensation part are integrally processed.

[0020] Preferably: The matrix band and the positioning part are integrally processed.

[0021] Preferably: The through-hole groove is a square through-hole groove, and the clamping cap is a spherical cap or a hemispherical cap.

[0022] The present invention has the following beneficial effects:

[0023] 1. The detachable connection device of the present invention allows clinicians to dynamically adjust the wrapping diameter and radian of the matrix band according to the depth, width of the proximal cavity type and the degree of tooth neck constriction, and accurately match the individual tooth anatomical features;

[0024] 2. The folding compensation part of the present invention adopts an elastic extension structure. After the main body of the forming sheet is wrapped, it can fill the tiny gaps between the tooth body and the forming sheet through local folding or unfolding, eliminating the "edge notch" problem caused by the rigid frame in the traditional design, and ensuring the accurate positioning of the bonding resin and the integrity of the edge seal;

[0025] 3. The adaptive contact between the folding compensation part of the present invention and the tooth surface, combined with the stable locking of the detachable connection device, enables the forming sheet to maintain full contact with the cavity margin after being pressed by the rubber dam clamp, avoiding the infiltration of saliva or gingival sulcus fluid caused by the warping of the forming sheet. This design is especially suitable for deep subgingival defects, and can construct a stable "dry area" in a narrow operation space, reducing the risk of bonding interface contamination and ensuring the resin curing quality and bonding strength;

[0026] 4. The flexible design of the folding compensation part of the present invention can deform naturally with the curvature of the adjacent surface, reducing the mechanical interference with the rubber dam cloth and clamp, realizing the one-time synchronous placement of the forming sheet and the moisture isolation system, avoiding the positioning deviation caused by the traditional step-by-step operation, and improving the overall treatment fluency;

[0027] 5. The tight wrapping property and edge sealing effect of the present invention can effectively inhibit the damage of the resin shrinkage stress to the dentin interface, reducing the risk of microleakage and secondary caries. At the same time, the uniform pressure distribution between the forming sheet and the tooth body can promote the dense stacking of the resin at the gingival wall, forming a restoration base with better mechanical properties and extending the service life of the restoration. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of the gingival wall lifting device described in Embodiment 1;

[0029] Figure 2 is an assembled installation diagram of the folding compensation part and the positioning part described in Embodiment 1;

[0030] Figure 3 is a three-dimensional view of the gingival wall lifting device described in Embodiment 2;

[0031] Figure 4 is a schematic structural diagram of the gingival wall lifting device described in Embodiment 2;

[0032] Figure 5 is an assembled installation diagram of the folding compensation part and the positioning part described in Embodiment 2;

[0033] Figure 6 is an assembled installation diagram of the protrusion and the groove described in Embodiment 2;

[0034] Figure 7 is a usage state diagram of the gingival wall lifting device described in Embodiment 2.

[0035] In the figure: 1 - forming piece, 2 - positioning part, 3 - detachable connection device, 4 - folding compensation part, 31 - protrusion, 32 - groove, 311 - positioning post, 312 - clamping cap. Specific embodiments

[0036] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be described below through specific embodiments shown in the drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0037] The connections mentioned in the present invention are divided into fixed connections and detachable connections. The fixed connections, that is, non-detachable connections, include but are not limited to conventional fixed connection methods such as hemming connection, riveting connection, bonding connection and welding connection, etc. The detachable connections include but are not limited to conventional disassembly methods such as screw connection, snap connection, pin connection and hinge connection, etc. When the specific connection method is not clearly defined, it is defaulted that at least one connection method can always be found among the existing connection methods to achieve this function, and those skilled in the art can choose according to their needs. For example: welding connection is selected for fixed connection, and hinge connection is selected for detachable connection.

[0038] Specific embodiment one: In combination with Figure 1 - Figure 2 To illustrate this embodiment, the gingival wall lifting device of this embodiment includes a forming piece 1, a positioning part 2 and a detachable connection device 3. The left and right ends of the forming piece 1 are detachably connected through the detachable connection device 3, and the bottom of the forming piece 1 has a positioning part 2.

[0039] The detachable connection device 3 is a ligature wire, and the left and right ends of the forming piece 1 are tied and connected through the ligature wire. During use, the forming piece 1 is surrounded to the outside of the tooth. After the ligature wires at the left and right ends of the forming piece 1 are knotted and fixed, the excess ligature wire is cut off by a ligature wire cutting pliers. After the ligature wire is tightened, the forming piece is not easy to shift.

[0040] The forming piece 1 and the folding compensation part 4 are integrally processed and formed. The forming piece 1 and the positioning part 2 are integrally processed and formed.

[0041] The top of the forming piece 1 has a folding compensation part 4. Since the depths, widths and the degree of narrowing at the tooth neck of the proximal cavity types of patients' teeth are different, after the main body of the forming piece 1 is wrapped, the small gap between the tooth body and the forming piece 1 can be filled by locally folding or unfolding the folding compensation part 4, eliminating the "edge notch" problem caused by the rigid frame in the traditional design, and ensuring the accurate positioning of the bonding resin and the integrity of the edge seal.

[0042] The specific use method of the gingival wall lifting device of this embodiment is as follows:

[0043] Step 1: Remove decay and prepare the cavity.

[0044] Step 2: Place the gingival wall elevation and shaping system, that is, surround the shaping sheet 1 around the outside of the tooth and fix it.

[0045] Step 3: Place the rubber dam cloth and rubber dam clamp.

[0046] Step 4: Fill and repair with resin or glass ionomer.

[0047] The material of the shaping sheet 1 is the same as that of the existing douban shaping sheet.

[0048] Specific Embodiment 2: In combination Figure 3 - Figure 7 To illustrate this embodiment, the gingival wall elevation device of this embodiment includes a shaping sheet 1, a positioning part 2 and a detachable connection device 3. The left and right ends of the shaping sheet 1 are detachably connected through the detachable connection device 3, and the bottom of the shaping sheet 1 has a positioning part 2.

[0049] The detachable connection device 3 includes a protrusion 31 and a groove 32. The two ends of the shaping sheet 1 are respectively provided with a protrusion 31 and a groove 32, and the protrusion 31 is clamped in the groove 32. The number of the grooves 32 and the protrusions 31 are both multiple, and they are both arranged side by side. Any one of the grooves 32 that matches the protrusion 31 can be selected according to actual operation requirements.

[0050] The protrusion 31 includes a positioning column 311 and a clamping cap 312. The clamping cap 312 is installed on the shaping sheet 1 through the positioning column 311, and the clamping cap 312 is clamped in the groove 32 through the positioning column 311.

[0051] The groove 32 is a through-hole groove.

[0052] The top of the shaping sheet 1 has a folding compensation part 4. Since the depths, widths and neck constriction degrees of the proximal cavity shapes of patients' teeth are different, after the main body of the shaping sheet 1 is wrapped, the small gap between the tooth body and the shaping sheet 1 can be filled by locally folding or unfolding the folding compensation part 4, eliminating the "edge notch" problem caused by the rigid frame in the traditional design, and ensuring the accurate placement of the bonding resin and the integrity of the edge seal.

[0053] The shaping sheet 1 and the folding compensation part 4 are integrally processed. The shaping sheet 1 and the positioning part 2 are integrally processed.

[0054] The through-hole groove is a square through-hole groove, and the clamping cap 312 is a spherical cap or a hemispherical cap.

[0055] The specific usage method of the gingival wall elevation device of this embodiment is as follows:

[0056] Step 1: Remove decay and prepare the cavity.

[0057] Step 2, place the gingival wall elevation forming system, that is, surround the forming sheet 1 around the outside of the tooth and fix it;

[0058] Step 3, place the rubber dam cloth and rubber dam clamp;

[0059] Step 4, fill and repair with resin or glass ionomer.

[0060] The material of the forming sheet 1 is the same as that of the existing douban forming sheet.

[0061] At both left and right ends of the forming sheet 1, one side is long and the other side is short. The long side wraps around from the adjacent surface opposite to the repair side and catches the buckle on the buccal side of the tooth, as shown in the figure.

[0062] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be arranged and combined. Those skilled in the art can exhaust all possibilities according to the mathematical knowledge of permutation and combination. Therefore, the present invention will not explain the technical solutions after permutation and combination one by one, but it should be understood that the technical solutions after permutation and combination have been disclosed by the present invention.

[0063] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Gingival wall elevation device, characterized in that: It includes a forming sheet (1), a positioning part (2) and a detachable connecting device (3). The left and right ends of the forming sheet (1) are detachably connected through the detachable connecting device (3), and the bottom of the forming sheet (1) has the positioning part (2).

2. The gingival wall elevation device according to claim 1, wherein: The detachable connecting device (3) is a ligature wire, and the left and right ends of the forming sheet (1) are connected by ligature wire binding.

3. The gingival wall elevation device according to claim 1, wherein: The detachable connecting device (3) includes a protrusion (31) and a groove (32). The two ends of the forming sheet (1) are respectively provided with the protrusion (31) and the groove (32), and the protrusion (31) is clamped in the groove (32).

4. The gingival wall elevation device according to claim 3, characterized in that: The number of the grooves (32) is multiple and arranged side by side.

5. The gingival wall elevation device according to claim 3, characterized in that: The protrusion (31) includes a positioning post (311) and a clamping cap (312). The clamping cap (312) is installed on the forming sheet (1) through the positioning post (311), and the clamping cap (312) is clamped in the groove (32) through the positioning post (311).

6. The gingival wall elevation device according to claim 5, wherein: The groove (32) is a through-hole groove.

7. The gingival wall elevation device according to claim 1, characterized in that: The top of the forming sheet (1) has a folding compensation part (4).

8. The gingival wall elevation device according to claim 7, characterized in that: The forming sheet (1) and the folding compensation part (4) are integrally processed and formed.

9. The gingival wall elevation device according to claim 1, characterized in that: The forming sheet (1) and the positioning part (2) are integrally processed and formed.

10. The gingival wall lifting device according to claim 6, wherein: The through-hole groove is a square through-hole groove, and the clamping cap (312) is a spherical cap or a hemispherical cap.

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