Adjustable dual-matrix system for free-end tooth restoration

Abstract

The utility model relates to the field of tooth filling, in particular to a kind of adjustable double-molding piece system for free end tooth restoration.A kind of adjustable double-molding piece system for free end tooth restoration, including first molding piece and second molding piece, the first molding piece has the first extension of rear side extension, the second molding piece has the second extension of rear side extension, the first molding piece is also equipped with the through slot for the second extension to pass through at the first extension near place, the first extension and second extension are all equipped with the cooperation slot of left and right through for cooperating fastener, the cooperation slot of second extension extends along front-back direction, the first extension is detachably fixed with second extension by fastener.The utility model has the advantages of convenient operation, without increasing the difficulty of operation, increasing operation time, can realize the position angle adjustment between first molding piece and second molding piece, and the use cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of dental fillings, specifically to an adjustable dual-molding sheet system for the restoration of free-end teeth. Background Technology

[0002] In clinical practice, for the restoration of distal proximal cavities of free-end teeth, the traditional double-fiber restoration method requires the dentist to manually manipulate two independent standardized fibrils. The specific procedure is as follows: First, the first fibril is manually pre-bent and inserted into the gingival sulcus to act as a support wall, and then fixed with fibril clips. Next, the second fibril is superimposed on the inside of the first fibril to restore the axial convexity of the tooth. Teflon glue or other auxiliary retention materials are inserted between the two fibrils to fix the angle between them, attempting to form the contour of the restoration using the gap between the two fibrils. However, the relative position between the two fibrils cannot be maintained, and misalignment is prone to occur, making the procedure more time-consuming and posing a risk of the second fibril falling out and being swallowed. Furthermore, the angle fixation between the first and second fibrils achieved solely with Teflon glue has poor stability, affecting the subsequent restorative outcome.

[0003] Patent application number 202222344919.5 discloses an oral molding piece, including an adjustment component and a molding component. The molding component is located inside the arc-shaped structure of the adjustment component, and both ends of the molding component are connected to the sidewall of the adjustment space by adhesive bonding. This solution fixes the molding component to the adjustment component by adhesive bonding, and then inserts it into the affected tooth. However, after the molding component and adjustment component are fixed by adhesive bonding, it is difficult to readjust it again. If the position is misadjusted, the molding piece will be wasted. Furthermore, the process of adhesive bonding between the molding component and the adjustment component is time-consuming or involves additional steps. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable dual-molding plate system for free-end tooth restoration that facilitates the adjustment of the angle and position between the first molding plate and the second molding plate, is very convenient to operate, and has a low cost.

[0005] To achieve the above objectives, this utility model employs an adjustable dual-molding plate system for free-end tooth restoration, comprising a first molding plate and a second molding plate. The first molding plate has mating holes on both its left and right sides for use with molding plate clamps. The first molding plate has a first extension portion extending rearward, and the second molding plate has a second extension portion extending rearward. The first molding plate also has a through groove near the first extension portion for the second extension portion to pass through. Both the first and second extension portions have mating grooves extending left and right for use with fasteners. The mating groove of the second extension portion extends in the front-rear direction. The first extension portion is detachably fixed to the second extension portion by fasteners.

[0006] The first and second molding pieces of this invention are rigidly connected by fasteners, ensuring stable relative positions and preventing misalignment. This significantly improves repair accuracy and eliminates the clinical risk of the second molding piece falling off and being swallowed. It allows for pre-adjustment outside the mouth or real-time adjustment inside the mouth, avoiding instrument failure due to the inability to adjust the adhesive fixation method. Furthermore, it is simple to operate and avoids increasing surgical time.

[0007] The mating groove of the second extension extends along the front-to-back direction. By adjusting the tightness of the fastener, continuous fine-tuning of the second molding piece relative to the first molding piece in terms of front-to-back and up-to-down angles can be achieved. If the adjustment is not satisfactory, the fastener can be loosened immediately for readjustment without the need to replace the piece, which can reduce surgical costs and significantly improve the clinical error tolerance.

[0008] Preferably, the first molded sheet has two first extensions, and the mating groove of the first molded sheet is located between the two first extensions.

[0009] The double first extensions form a double-sided limit, which can constrain the left and right position of the second extension, so that it can only slide and adjust in the front and back direction, and the angle is constant after locking; at the same time, the double first extensions can share the load, avoiding excessive stress on one side that could cause deformation of the first molded piece or loosening of fasteners.

[0010] Preferably, the width of the through groove is the same as the distance between the two first extensions.

[0011] The above configuration not only facilitates the alignment of the second extension with the through groove, but also allows the two first extensions to directly contact and limit the end face of the inserted second extension, further preventing the second molded sheet from wobbling left and right relative to the first molded sheet.

[0012] Preferably, the through groove is located in the middle of the first molded sheet, and the second extension is located in the middle of the second molded sheet.

[0013] When the fastener is tightened, the clamping force is applied to the center of the first forming piece, which can prevent the generation of eccentric torque, thereby preventing the far end of the first forming piece from warping and deformation, and preventing the second forming piece from relative deflection, thus improving the positioning accuracy.

[0014] Preferably, the first molded sheet protrudes from the middle towards the edge and has an insertion portion.

[0015] The insertion part is located in the middle of the first molded piece, and the through groove and the first extension part are also located in the middle of the first molded piece, which can reduce the impact of the through groove on the overall structural strength of the first molded piece.

[0016] Preferably, the second extension of the second molded sheet is arc-shaped, and the mating groove on the second extension is arc-shaped, with the extension direction of the mating groove being the same as the extension direction of the second extension. This arrangement facilitates angle adjustment between the second molded sheet and the first molded sheet.

[0017] Preferably, the fastener includes a fastening bolt and a fastening nut for passing through the mating groove. The fastener is detachably fixed to the first molded piece and can be reused to reduce usage costs.

[0018] This invention has the advantages of being easy to operate, not increasing the difficulty or time of surgery, being able to adjust the position and angle between the first and second molding pieces, and having a low cost. Attached Figure Description

[0019] Figure 1 This is a rear view of the first molded sheet of Example 1.

[0020] Figure 2 This is a top view of the first molded sheet of Example 1.

[0021] Figure 3 This is a side view of the second molded sheet of Example 1.

[0022] Figure 4 This is a schematic diagram of a structure when the first and second molding sheets are fixed in Example 1.

[0023] Figure 5 This is a schematic diagram of the structure of the first molded sheet in Example 2.

[0024] Figure 6 This is a schematic diagram of a structure when the first and second molding sheets are fixed in Example 2. Detailed Implementation

[0025] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0026] Example 1

[0027] like Figures 1 to 4 As shown, an adjustable dual-molding plate system for free-end tooth restoration in this embodiment includes a first molding plate 1, a second molding plate 2, and fasteners for detachably fixing the first molding plate 1 and the second molding plate 2 together. The fasteners in this embodiment include a fastening bolt 31 and a fastening nut 32. The fastening bolt 31 in this embodiment is a bolt with a butterfly-shaped head.

[0028] The first molded sheet 1 has a first extension 11 extending rearward, and the second molded sheet 2 has a second extension 21 extending rearward. The first molded sheet 1 also has a through groove 12 near the first extension 11 for the second extension 21 to pass through. Both the first extension 11 and the second extension 12 have mating grooves extending left and right for engaging with fasteners. The first extension 11 and the second extension 21 are detachably fixed together by fasteners. The through groove 12 is located in the middle of the first molded sheet 1, and the second extension 21 is located in the middle of the second molded sheet 2.

[0029] The mating groove includes a first mating groove 12 disposed on the first extension 11 and a second mating groove disposed on the second extension 21. The first mating groove 12 is a circular hole groove. The second extension 21 is arc-shaped and extends in the front-back direction. The second mating groove 22 is arc-shaped, and the extension direction of the second mating groove 22 is the same as the extension direction of the second extension 21.

[0030] The first molding piece 1 has two mating holes 13 on the left and right wings for use with the molding piece clamp. The middle part of the first molding piece 1 protrudes to the edge and forms an insertion part 14. The first molding piece 1 has two first extensions 11 and a first mating groove 12 is located between the two first extensions 11.

[0031] Example 2

[0032] Depend on Figure 5 and Figure 6 As shown, the only difference between this embodiment and Embodiment 1 is that the width of the groove 12 is the same as the distance between the two first extensions 11. When the first molding sheet 1 and the second molding sheet 2 are assembled, the side of the second extension 21 of the second molding sheet contacts the side of the first extension 11 of the first molding sheet 1.

[0033] When using the adjustable dual-molding plate system of this embodiment, the doctor selects the appropriate size of the first molding plate and the second molding plate according to the position of the left or right teeth. At this time, the first molding plate cooperates with the second molding plate through the locking member, and the locking nut is not tightened.

[0034] The first and second shaping pieces are placed together in the posterior tooth region, with the first shaping piece closely attached to the restorative tooth and its edge inserted into the gingival sulcus. The second shaping piece is positioned between the first shaping piece and the surrounding tooth structure. The locking bolt retention device is located on the outer side of the outer shaping piece, both at the distal free end of the restorative tooth.

[0035] Place the tooth wedge, tighten the molding clip, and adjust the position and shape of the first molding clip to fit the tooth structure as closely as possible. Use the molding clip holding tool to adjust the optimal restoration angle. While adjusting the angle, the second molding clip rotates smoothly along the groove. Once the curvature is adjusted to the ideal position, use tweezers or other tools to tighten the locking nut and locking bolt to fix the first and second molding clips in place.

[0036] Finally, resin filling and light curing are performed on the gap between the first and second molded pieces. After filling, the tooth wedge is removed first, then the molded piece clamp is loosened, and the entire molded piece system is removed from the mouth and disassembled.

Claims

1. An adjustable dual-molding plate system for free-end tooth restoration, comprising a first molding plate and a second molding plate, wherein the first molding plate has mating holes on both its left and right sides for use with molding plate clips, characterized in that: The first molded sheet has a first extension extending rearward, and the second molded sheet has a second extension extending rearward. The first molded sheet is also provided with a through groove near the first extension to allow the second extension to pass through. Both the first extension and the second extension are provided with mating grooves that extend from left to right for engaging fasteners, and the mating groove of the second extension extends in the front-to-back direction. The first extension is detachably fixed to the second extension by fasteners.

2. The adjustable dual-molding sheet system for free-end tooth restoration according to claim 1, characterized in that: The first molded sheet has two first extensions, and the mating groove of the first molded sheet is located between the two first extensions.

3. The adjustable dual-molding sheet system for free-end tooth restoration according to claim 2, characterized in that: The width of the through slot is the same as the distance between the two first extensions.

4. The adjustable dual-molding sheet system for free-end tooth restoration according to claim 1, 2, or 3, characterized in that: The through groove is located in the middle of the first molded sheet, and the second extension is located in the middle of the second molded sheet.

5. The adjustable dual-molding sheet system for free-end tooth restoration according to claim 4, characterized in that: The first molded sheet has an insertion portion that protrudes from the middle to the edge.

6. The adjustable dual-molding sheet system for free-end tooth restoration according to claim 1, characterized in that: The second extension of the second molded sheet is arc-shaped, and the mating groove on the second extension is arc-shaped. The extension direction of the mating groove of the second extension is the same as the extension direction of the second extension.

7. The adjustable dual-molding sheet system for free-end tooth restoration according to claim 1, characterized in that: The fasteners include fastening bolts and fastening nuts for passing through the mating groove.

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