A shaped wedge clamp

Abstract

The utility model discloses a kind of forming piece clamps, it is related to dental prosthetic auxiliary instrument technical field, including bow ring and fixed chuck, the both ends of the bow ring are provided with one fixed chuck respectively, still be provided with clamping device on any one fixed chuck, can implement clamping action to the tooth neck of tooth body;Among them, the clamping device includes the multiple contact points of the front end bottom of the fixed chuck and is arranged in horizontal direction side by side.This utility model forming piece clamp can adapt to complex tooth body, and realize stable clamping.

Description

Technical Field

[0001] This utility model relates to the field of dental restorative auxiliary instruments, and in particular to a molding clip. Background Technology

[0002] In dental resin restorations, bean-shaped clips are often used to assist in shaping, and clip clamps are used to adhere the clips to the tooth surface. Traditional clip clamps typically have a smooth, concave curved surface at the contact point with the tooth. While this provides a good fit for teeth with an initial arc shape that perfectly matches the tooth's shape, the morphology of teeth is extremely complex. Most teeth are not standard curved surfaces, especially when clamping teeth with prominent buccal-lingual ridges, buccal-lingual developmental grooves, flattened roots, or twisted teeth. This often leads to localized suspension and unstable clamping. The cervical region of a tooth generally has some degree of narrowing. Traditional clip clamps are made with a curved surface that closely resembles this shape for fit. However, during actual clamping, the curved contact surface deforms due to insufficient strength of the base material, causing the clip clamp to slide upwards along the smooth tooth surface, making it difficult to achieve a tight fit and stable clamping.

[0003] Furthermore, through extensive observation, research, and repeated reflection, the inventors noticed that the structure and function of dental tissues depend on their own moisture balance. Prolonged dehydration can cause the collagen fiber network of hydroxyapatite crystals, the main component of dentin, to shrink and degenerate, resulting in microcracks. This reduces the toughness of the tooth and increases the risk of fracture. More importantly, the "slightly moist state" of dentin is a core prerequisite for successful resin restoration. If the tooth loses moisture for a long time, the dentinal tubules will collapse and close due to the evaporation of tissue fluid. In addition, the dense, dry layer formed by the drying and shrinkage of the collagen fibers will prevent the adhesive from effectively penetrating, leading to a decrease in bond strength and microleakage at the restoration margins. This can induce secondary caries, and in severe cases, even cause the restoration to fall off, requiring re-restoration. Even after the restoration is completed, the dentinal tubules, due to the loss of tissue fluid, remain open and cannot buffer against external stimuli. They may also experience pulp irritation due to the chemical substances used in the restoration process, such as etching agents and adhesives, or exhibit significant sensitivity to hot and cold, or to biting.

[0004] Therefore, in dental resin restoration treatment, it is necessary to keep the tooth body slightly moist. However, this moisture will form a water film between the molding clip and the tooth body, which will greatly reduce the coefficient of friction, causing the molding clip to slide and making it difficult to achieve stable clamping.

[0005] Therefore, a forming sheet clamp is provided to solve the aforementioned technical problems existing in the prior art. Utility Model Content

[0006] The purpose of this invention is to provide a shaped clip to solve the problems existing in the prior art, which can adapt to complex tooth structures and achieve stable clamping.

[0007] To achieve the above objectives, this utility model provides the following solution: This utility model provides a forming sheet clip, comprising: Bow ring; The fixed clamp is provided at both ends of the arch ring, and each fixed clamp is also provided with a clamping device, which can clamp the neck of the tooth; wherein, the clamping device includes multiple contact points arranged side by side in the horizontal direction at the bottom front end of the fixed clamp.

[0008] Preferably, the contact point extends beyond the fixing clamp in the direction toward the tooth body, and the contact point extends upward from the bottom of the fixing clamp along the axial direction of the tooth body; The front surface of the contact point is a plane.

[0009] Preferably, a break groove is formed between adjacent contact points.

[0010] Preferably, the upper and lower surfaces of the clamping device are planar or inclined surfaces.

[0011] Preferably, the lower surface of the clamping device is provided with an arc transition surface at the connection between the bottom of the fixing clamp and the lower surface of the clamping device.

[0012] Preferably, the side and upper surface of the clamping device are further provided with a reinforcing structure at the connection with the fixing clamp.

[0013] Preferably, the clamping device is integrally formed with the corresponding fixing clamp or is detachably connected.

[0014] Preferably, the outer surface of the bow ring is covered with a protective sleeve, and the surface of the protective sleeve is provided with an anti-slip structure.

[0015] Preferably, the fixing clamp is made of rigid plastic, and the fixing clamp is connected to the bow ring by injection molding; wherein, the connection position between the bow ring and the fixing clamp is further provided with a limiting structure for limiting the fixing clamp. Alternatively, the fixing clamp is mechanically or adhesively connected to the bow ring; Alternatively, the fixing clamp and the bow ring are integrally injection molded.

[0016] Preferably, each of the fixed clamps is further provided with an adaptive clamp, which can fit against the tooth.

[0017] Preferably, the contact surface of the adaptive chuck for contacting the tooth is further provided with an incremental region.

[0018] The present invention achieves the following technical advantages over the prior art: The forming clip of this utility model mainly includes an arch ring and fixed clamps. The arch ring can provide clamping force to the tooth body, and each end of the arch ring is provided with a fixed clamp. The fixed clamps can clamp the tooth body and transmit the clamping force of the arch ring to the forming clip. Furthermore, each of the fixed clamps is also provided with a clamping device, which can perform a clamping action on the neck of the tooth body. The clamping device includes multiple contact points arranged side by side in the horizontal direction at the bottom front end of the fixed clamp.

[0019] The clamping device of this invention has multiple contact points to achieve multi-point clamping. Due to the increased number of contact points, it is more adaptable to complex tooth structures and achieves stable clamping. Moreover, the above-mentioned multi-point contact structure also increases the deformation capability of the clamping device. Through the clamping force continuously applied by the arch ring, each contact point can independently and passively adjust its angle and position according to the shape of the tooth neck, making it more closely fit the shape of the tooth neck. It can achieve independent fitting for teeth with standard arc shapes and non-standard arc shapes, compensate for shape errors, and ensure effective contact. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the forming sheet clamp in an embodiment of the present invention; Figure 2 This is a front view of the forming sheet clamp in an embodiment of the present invention; Figure 3 for Figure 2 AA cross-section view; Figure 4 This is a schematic diagram of the back of the forming sheet clamp in an embodiment of this utility model; Figure 5 This is a schematic diagram showing the arrangement of the clamping device and the incremental area in an embodiment of this utility model.

[0022] In the diagram: 100-forming piece clamp, 1-bow ring, 101-first bow ring arm, 102-second bow ring arm, 2-protective sleeve, 3-fixed clamp, 301-first fixed clamp, 302-second fixed clamp, 4-adaptive clamp, 401-first adaptive clamp, 402-second adaptive clamp, 5-clamping device, 501-disconnecting groove, 502-plane, 503-reinforcing structure, 504-contact point, 505-groove, 6-incremental area. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The purpose of this invention is to provide a shaped clip to solve the problems existing in the prior art, which can adapt to complex tooth structures and achieve stable clamping.

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1 like Figures 1-5 As shown, this embodiment provides a forming clip 100, which mainly includes an arch ring 1 and a fixed clip 3. The arch ring 1 can provide clamping force to the tooth body, and a fixed clip 3 is provided at each end of the arch ring 1. The fixed clip 3 can clamp the tooth body and transmit the clamping force of the arch ring 1 to the forming clip. Furthermore, each of the fixed clips 3 is also provided with a clamping device 5, which can perform clamping action on the neck of the tooth body. The clamping device 5 includes a plurality of contact points 504 arranged side by side in the horizontal direction at the bottom front end of the fixed clip 3.

[0027] In this embodiment, the clamping device 5 is provided with multiple contact points 504 to achieve multi-point clamping. Due to the increase in contact points 504, it is more adaptable to complex tooth structures and achieves stable clamping. Moreover, the above-mentioned multi-point contact structure also increases the deformation capability of the clamping device 5. Through the clamping force continuously applied by the arch ring 1, each contact point 504 can be independently and passively adjusted to a certain extent according to the shape of the tooth neck, so that it fits the tooth neck shape better. It can achieve independent fitting for teeth with standard arc shape and non-standard arc shape, compensate for shape errors, and ensure contact effectiveness.

[0028] In this embodiment, the contact point 504 extends beyond the fixing clamp 3 in the direction toward the tooth body, and the contact point 504 extends upward from the bottom of the fixing clamp 3 along the axial direction of the tooth body; wherein, the front end face of the contact point 504 is a plane 502, that is, the contact surface between the clamping device 5 and the tooth body is a plurality of smaller planes 502 rather than the sharp edge of the traditional forming clip, which reduces the risk of damage to soft tissue caused by the traditional forming clip during clamping.

[0029] In this embodiment, a break groove 501 is formed between adjacent contact points 504. The break groove 501 can be a V-shaped break groove with a certain angle on both sides. As a preferred embodiment, the angle on both sides of the break groove 501 is set to 60°~150° (other angles can also be selected as needed). This allows the clamping device 5 to present a pyramid-shaped structure with a larger rear and a smaller front (the side closer to the fixed clamp 3 is "rear", and the side in contact with the tooth is "front"). While ensuring high structural strength, the total contact area between the clamping device 5 and the tooth is reduced, thereby strengthening the single-point contact pressure and efficiently transmitting the reinforced arch ring 1 clamping force to the cervical region of the tooth. Even under the same arch ring clamping force as the traditional forming clip, more stable clamping can be achieved.

[0030] Alternatively, other shapes of disconnect grooves 501 can be selected according to work needs, such as U-shaped disconnect grooves.

[0031] Furthermore, the upper and lower surfaces of the clamping device 5 are either flat or inclined. In a preferred embodiment, the inclination angle of the upper surface of the clamping device 5 is ±15°, and the inclination angle of the lower surface is 0~45° (with the occlusal surface of the tooth as a reference). When the inclination angle is 0°, it is flat. When the inclination angle of the upper surface of the clamping device 5 is ≥-15°, a stronger clamping and anti-slip effect can be produced, which can be applied to some irregular teeth that require greater clamping force. When the inclination angle of the upper surface is ≤15°, excessive positive pressure between the clamping device 5 and the cervical region of the tooth can be avoided, which may cause tissue damage. When the inclination angle of the lower surface is ≤45°, it can ensure that the clamping force is transmitted downward along the tooth axis (rather than slipping upward), so that the contact position between the forming clip 100 and the tooth is moved upward. The two work together to achieve the mechanical effect of guiding the clamping force downward and the contact force being safe and controllable, reducing the structural deformation and sliding problems caused by the traditional forming clip being located at the bottom of the clip, and making the clamping more stable.

[0032] In this embodiment, the clamping device 5, through mechanical structure optimization, adopts multi-point contact distributed constraint to form a stable support, which can significantly improve the anti-torsion and anti-shaking ability of the forming piece clamp 100. Especially when the tooth surface is wet, due to the relatively high local pressure between the clamping device 5 and the tooth surface, the water film on the tooth surface will be destroyed by the contact points 504 of the clamping device 5 and discharged through the gaps between the contact points 504, so that the contact points 504 directly contact the tooth, restoring the normal coefficient of friction and reducing slippage from the root. Especially for irregular tooth surfaces, even if there is a water film at a certain contact point 504, stable clamping can be achieved through other contact points 504.

[0033] In this embodiment, the lower surface of the clamping device 5 is provided with an arc transition surface at the connection between the bottom of the fixing clamp 3 and the lower surface of the clamp. When the forming clip 100 slides along the tooth body from the crown direction to the cervical region, it can gently push away the free gingiva and reduce the adverse effects on the soft tissue.

[0034] In this embodiment, a reinforcing structure 503 is provided at the connection between the side and upper surface of the clamping device 5 and the fixing clamp 3. The reinforcing structure 503 is preferably an arc-shaped reinforcing structure (for example, an arc-shaped protrusion formed at the connection), or it can be other curved reinforcing structures. In this embodiment, the arc-shaped reinforcing structure can disperse the radial clamping force (from the bow ring 1) borne by the clamping device 5 into a tangential force along the arc surface, avoid stress concentration at the connection point, reduce the risk of stress peaks at the connection point leading to breakage due to right-angle connection, and improve the structural strength by stress dispersion, ensuring that the clamping device 5 does not fall off or break under a clamping force of 5~20N.

[0035] Furthermore, it should be noted that the clamping device 5 and the fixing clamp 3 can be integrally formed. In this case, the clamping device 5 and the fixing clamp 3 can be made of the same material, such as both being rigid plastic. Alternatively, the clamping device 5 and the fixing clamp 3 can be separate components, with the clamping structure detachably mounted on the fixing clamp 3. In this case, the clamping device 5 and the fixing clamp 3 can also be made of the same material, both being rigid plastic. Or, the clamping device 5 and the fixing clamp 3 can be made of different materials; for example, the fixing clamp 3 can be made of metal, while the clamping device 5 can be made of rigid plastic. In this embodiment, the clamping device 5 and the fixing clamp 3 are detachably connected, allowing for the replacement of different clamping devices 5 as needed to meet personalized adaptation requirements.

[0036] The detachable connection method of the clamping device 5 and the fixed clamp 3 can be selected according to specific work needs. For example, multiple buckles can be arranged side by side at the bottom front end of the fixed clamp 3, and multiple slots can be arranged at the rear end of the clamping device 5. The clamping device 5 and the fixed clamp 3 can be detachably connected by the buckles being inserted into the corresponding slots.

[0037] Alternatively, the clamping device 5 and the fixing clamp 3 can be connected by mortise and tenon joints, plug-in joints, or adhesive joints.

[0038] In this embodiment, the bow ring 1 is preferably a C-shaped structure. It should be noted that the C-shaped structure here can be a standard C-shaped structure, or it can be a C-like structure, that is, other curved structures can be set in the C-shaped structure; or, other structures of bow ring 1 can be selected, such as an n-shaped bow ring 1.

[0039] Furthermore, the bow ring 1 can be made of an elastic metal, such as a nickel-titanium shape memory alloy or other highly elastic shape memory alloys (e.g., copper-based shape memory alloys or iron-based shape memory alloys). Moreover, as a preferred embodiment, the bow ring 1 has a continuous circular arc symmetrical structure with full curvature transition (i.e., the two curved surfaces are not only continuous in position and tangential direction at the connection, but also in curvature). Its mechanical properties are stable, and the stress distribution and elastic potential energy release are uniform, which can reduce the risk of fracture caused by stress concentration. It can also release elastic potential energy synchronously. In the clamping state, a stable and gentle clamping force can be applied to the tooth body through the fixed clamps 3 and the adaptive clamps 4 at both ends.

[0040] Alternatively, the bow ring 1 can be made of other materials depending on the specific working requirements. For example, it can be made of rigid plastics, such as medical-grade PPSU (Polyphenylene sulfone resins) or PEEK (polyether ether ketone). In this case, the bow ring 1 can be made using injection molding.

[0041] Furthermore, the bow ring 1 mainly includes a central arc segment. One end of the central arc segment is connected to a first bow ring arm 101, and the other end is connected to a second bow ring arm 102. A fixed clamp 3 is provided at the end of the first bow ring arm 101 away from the central arc segment and at the end of the second bow ring arm 102 away from the central arc segment. The fixed clamp 3 provided on the first bow ring arm 101 is the first fixed clamp 301, and the adaptive clamp 4 provided on the first fixed clamp 301 is the first adaptive clamp 401. The fixed clamp 3 provided on the second bow ring arm 102 is the second fixed clamp 302, and the adaptive clamp 4 provided on the second fixed clamp 302 is the second adaptive clamp 402.

[0042] In this embodiment, the outer surface of the arch ring 1 is also covered with a protective sleeve 2. The protective sleeve 2 is preferably made of medical soft rubber and is injection molded onto the middle arc segment of the arch ring 1. It can act as a buffer when the arch ring 1 breaks, and at the same time prevent the arch ring 1 from directly contacting the tooth and causing irritation. Alternatively, the protective sleeve 2 and the arch ring 1 can also be a separate structure, with the protective sleeve 2 being fitted onto the arch ring 1. Furthermore, the surface of the protective sleeve 2 is provided with an anti-slip structure, preferably a micro-textured structure, which can act as an anti-slip when picking up the molded clip 100, increasing the convenience and safety of operation.

[0043] As a preferred embodiment, the medical soft rubber used in the protective sleeve 2 is silicone rubber with a Shore hardness of 30~40A and a thickness of 0.5~1mm, which does not affect the clamping force output of the bow ring 1.

[0044] In this embodiment, the design clamping force of the arch ring 1 is preferably 5~20N, which can balance the clamping effectiveness and safety. This avoids the situation where the design clamping force of the arch ring 1 is less than 5N, so that the arch ring 1 cannot provide enough clamping force to achieve stable clamping, and when the design clamping force of the arch ring 1 is greater than 20N, it is easy to cause excessive tooth separation, resulting in damage to the periodontal ligament, or due to excessive clamping force, the condition of the cracked tooth is aggravated.

[0045] Furthermore, it should be noted that the clamping force of the bow ring 1 can be provided by itself; or, the bow ring 1 can also adopt a split structure, including a first half bow ring and a second half bow ring. The first end of the first half bow ring and the second half bow ring are each connected to a fixed clamp 3. The second ends of the first half bow ring and the second half bow ring are connected by elastic elements such as springs. The first half bow ring and the second half bow ring are connected to an adjustment device. The adjustment device can adjust the distance between the first half bow ring and the second half bow ring, thereby adjusting the clamping force generated by the bow ring 1.

[0046] In a preferred embodiment, the adjusting device may include a screw and a guide rail. The screw is a bidirectional screw, parallel to the guide rail, and both ends of the bidirectional screw are rotatably mounted on the guide rail via screw support seats. The first and second semi-circular rings are threadedly connected to the two ends of the bidirectional screw via connecting blocks, which are slidably disposed on the guide rail. At least one end of the bidirectional screw is connected to a knob. By rotating the bidirectional screw via the knob, the first and second semi-circular rings can be moved along the guide rail, moving closer to or further apart from each other. This allows adjustment of the distance between the first and second semi-circular rings to regulate the clamping force generated by the arch ring 1, meeting the needs of different cases.

[0047] Alternatively, the screw can also be a one-way screw. In this case, one of the first and second half-bow rings is rotatably connected to the one-way screw and fixed on the guide rail, while the other is threadedly connected to the one-way screw through a connecting block and slidably set on the guide rail.

[0048] Alternatively, other adjustment devices that meet the requirements can be selected as needed, which will not be elaborated in this embodiment.

[0049] In this embodiment, the fixing clamp 3 is preferably made of rigid plastic and can be connected to the bow ring 1 by injection molding. A limiting structure is also provided at the connection position between the bow ring 1 and the fixing clamp 3. The limiting structure protrudes from the side wall of the bow ring 1 to limit the fixing clamp 3. The limiting structure can be a limiting piece, arranged around the connection position between the bow ring 1 and the fixing clamp 3. Specifically, the limiting piece can be circular, square, or irregularly shaped (with a diameter or width 0.3~1mm larger than the bow ring 1) to increase the injection molding contact area and prevent the fixing clamp 3 from slipping. Alternatively, other limiting structures can be selected as needed, such as limiting blocks. There can be one limiting block or multiple limiting blocks arranged around the connection position between the bow ring 1 and the fixing clamp 3.

[0050] Alternatively, the limiting structure can be a recessed structure set on the side wall of the bow ring 1. For example, the limiting structure can be a rectangular, regular polygonal or other shaped limiting groove, and there can be one limiting groove or multiple limiting grooves set around the connection position between the bow ring 1 and the fixed clamp 3. When there is one limiting groove, it can be an annular groove set around the connection position between the bow ring 1 and the fixed clamp 3.

[0051] As a preferred embodiment, the rigid plastic used in the fixing clamp 3 can be medical-grade PPSU or PEEK material, whose elastic modulus (2~4GPa) is much lower than that of metal (such as stainless steel about 200GPa), reducing mechanical stimulation when in contact with the tooth and reducing the risk of enamel damage; moreover, during injection molding, the limiting structure at the end of the arch ring 1 is embedded in the rigid plastic to form a "mechanical lock", which can keep it from slipping out during long-term use.

[0052] It should be further explained that the bow ring 1 and the fixed clamp 3 can also be connected in other ways as needed, such as mechanical connection methods such as inlay, plug-in, or adhesive connection. In the inlay connection method, corresponding tenons and mortises are respectively set on the bow ring 1 and the fixed clamp 3, and the tenons are inserted into the corresponding mortises to achieve the connection. In the plug-in connection method, corresponding plug blocks and slots are respectively set on the bow ring 1 and the fixed clamp 3, and the plug blocks are inserted into the corresponding slots to achieve the connection. In the adhesive connection method, the fixed clamp 3 is directly glued to the bow ring 1. The above connection methods are all mature existing technologies in this field, and will not be described in detail in this embodiment.

[0053] Alternatively, when the bow ring 1 is also made of rigid plastic, the bow ring 1 and the fixing clamp 3 can be integrally injection molded.

[0054] In this embodiment, the fixing clamp 3 can also be made of other materials, such as metal. In this case, the bow ring 1 and the fixing clamp 3 can be connected by inlay, insertion or bonding.

[0055] In this embodiment, the bottom of the fixing clamp 3 is provided with a slot 505, which is preferably a "Π" shaped slot. If a dental wedge is required in the case, the dental wedge can be inserted through the "Π" shaped slot. Alternatively, after the dental wedge is placed, the forming piece clamp 100 can be moved from top to bottom until the bottom of the fixing clamp 3 contacts the bottom of the gingival sulcus. At this time, the clamping instrument (usually a dental forming piece clamp) is released to clamp. The placed dental wedge will be located inside the "Π" shaped slot, which does not affect the clamping action.

[0056] In this embodiment, each of the fixed clamps 3 is also provided with an adaptive clamp 4, which can fit against the tooth.

[0057] In a preferred embodiment, the adaptive clamp 4 has a softening phase and a hardening phase. Before installing the shaping piece, the adaptive clamp 4 is in the softening phase, and then the shaping piece clamp 100 is clamped onto the tooth, so that the adaptive clamp 4 can fit with the tooth and accurately replicate the shape of the tooth. Then the shaping piece clamp 100 is removed, the shaping piece is installed, and the adaptive clamp 4 is clamped onto the tooth again in the hardening phase (which can maintain the replicated shape and has high strength), so that the adaptive clamp 4 can apply pressure to the shaping piece under the action of the arch ring 1 and make the shaping piece fit with the tooth.

[0058] In this embodiment, an adaptive clamp 4 is provided on the fixed clamp 3. The adaptive clamp 4 has a softening phase and a hardening phase. When the adaptive clamp 4 is in the softening phase, it can fit with the tooth and accurately replicate the tooth's morphology (such as tilted, twisted, abnormally developed teeth and complex and diverse anatomical morphologies such as mesial margins, distal margins, buccal ridges, lingual ridges, cusps, and undercuts). When the adaptive clamp 4 is in the hardening phase, it can maintain the replicated morphology and has high strength, thereby applying pressure to the shaping piece under the action of the arch ring 1 and making the shaping piece fit with the tooth. Compared with traditional shaping piece clamps, the shaping piece clamp 100 in this embodiment can achieve a more precise fit with the tooth and can apply pressure to the shaping piece and make the shaping piece fit with the tooth to the maximum extent, thereby achieving precise shaping and restoration. This avoids the problems of poor fit and insufficient structural stability of traditional shaping piece clamps due to their fixed shape, which leads to the inability to stably clamp the tooth and cause the shaping piece to not fit tightly with the tooth, resulting in restoration defects and medical risks.

[0059] In this embodiment, the adaptive chuck 4 is preferably made of a malleable material. The malleable material can be a physical sensing material, a chemical sensing material, or a hybrid sensing material (possessing both physical and chemical change characteristics). Among them, the physical sensing material can be a thermosensitive material such as polycaprolactone (PCL) or a magnetosensitive material such as biodegradable magnetic polylactic acid (PLA-Fe3O4); the chemical sensing material can be a photopolymerization material such as dental epoxy acrylate-polyurethane hybrid light-curing resin (EA-PUA Hybrid Resin), an acid-base reaction material such as glass ionomer cement (GIC), or a redox material such as a disulfide bond crosslinked polyethylene glycol (PEG)-polycaprolactone (PCL) copolymer system; the hybrid sensing material can be a dual-curing material such as alkali silicate (alkasites) double-curing resin or light-curing glass ionomer cement (RMGIC).

[0060] In this embodiment, the adaptive chuck 4 can also be made of an elastic material, such as silicone, depending on the specific working requirements.

[0061] In this embodiment, the contact surface between the adaptive clamp 4 and the tooth is provided with an incremental region 6. As a preferred embodiment, the incremental region 6 gradually increases from the cervical region to the coronal region, and is generally designed to extend beyond the clamping device 5. According to the anatomical structure of the tooth, the width difference (on one side) from the cervical region or marginal ridge to the highest point of the tooth shape on the same side is generally no more than 2 mm. The length of the incremental region 6 extending beyond the clamping device 5 is preferably 0.3~2 mm, which can provide sufficient deformation for the shaping of the adaptive clamp 4.

[0062] Furthermore, in this embodiment, the adaptive clamp 4 has two V-shaped tooth contact surfaces that can respectively engage with the tooth being clamped and the adjacent tooth. The upper part (coronal side) of the contact surface has a larger incremental area 6. When clamping the tooth, the upper part of the contact surface with the larger incremental area 6 can compress the area from the tooth contact point to the coronal side. Combined with elastic deformation or softening-hardening phase transition, the forming clip 100 can achieve a tight fit between the clamp (bean-shaped clip) and the tooth above the contact point when performing the clamping action, restoring the normal contact relationship, avoiding food impaction, and reducing the risk of secondary caries.

[0063] In this embodiment, the adaptive chuck 4 and the corresponding fixed chuck 3 are detachably connected. Specifically, the adaptive chuck 4 can be securely connected to the corresponding fixed chuck 3 using methods such as mortise and tenon joints, insertion, sleeve, or adhesive bonding. When the adaptive chuck 4 and the corresponding fixed chuck 3 are connected using mortise and tenon joints, mortise grooves can be provided on both sides of the fixed chuck 3, and a tenon can be provided at the rear end of the adaptive chuck 4 (the end closest to the fixed chuck 3). The tenon engages with the corresponding mortise groove to achieve the mortise and tenon connection. When the adaptive chuck 4 and the corresponding fixed chuck 3 are connected using insertion, a limiting hole can be provided on the front end face of the fixed chuck 3, and a limiting block can be provided on the rear end face of the adaptive chuck 4. The limiting block is inserted into the corresponding limiting hole to achieve the insertion connection. When the adaptive chuck 4 and the corresponding fixed chuck 3 are connected using a sleeve, the rear end of the adaptive chuck 4 can wrap around the front end of the fixed chuck 3. When the adaptive chuck 4 and the corresponding fixed chuck 3 are connected using adhesive bonding, the adaptive chuck 4 can be directly bonded to the front end face of the fixed chuck 3.

[0064] In this embodiment, when the adaptive chuck 4 is made of an irreversible phase change material, it can be designed for single use, thereby avoiding cross-infection and ensuring safety and hygiene; when the adaptive chuck 4 is made of a reversible phase memory material (such as the thermosensitive material or redox material mentioned above), it can be designed for multiple use, and can be reused after disinfection, reducing costs.

[0065] Alternatively, the adaptive chuck 4 and the corresponding fixed chuck 3 can be an integral structure, and the two can be connected by injection molding or other connection methods. When the adaptive chuck 4 needs to be replaced, the adaptive chuck 4 and the corresponding fixed chuck 3 can be replaced as a whole.

[0066] The method of using the forming clip 100 in this embodiment is as follows: When in use, if a dental wedge is needed, it can be inserted through the "Π" shaped groove at the bottom of the fixed chuck 3, or after placing the dental wedge, the forming clip 100 can be moved down from above to the bottom of the fixed chuck 3 to contact the bottom of the gingival sulcus, and the clamping instrument can be released; the arch ring 1 applies a gentle clamping force of 15N to the tooth, the adaptive chuck 4 is squeezed and deformed to fit the tooth, the clamping device 5 adjusts with the shape of the cervical region of the tooth and transmits the clamping force to perform clamping, limiting the excessive deformation of the adaptive chuck 4, and at the same time breaking the water film on the tooth surface to achieve stable clamping, and the soft rubber protective sleeve 2 protects the tooth and prevents slipping.

[0067] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A forming sheet clamp, characterized in that: include: Bow ring; The fixed clamp is provided at both ends of the arch ring, and each fixed clamp is also provided with a clamping device, which can clamp the neck of the tooth; wherein, the clamping device includes multiple contact points arranged side by side in the horizontal direction at the bottom front end of the fixed clamp.

2. The forming sheet clamp according to claim 1, characterized in that: The contact point extends beyond the fixing clamp in the direction toward the tooth body, and the contact point extends upward from the bottom of the fixing clamp along the axial direction of the tooth body; The front surface of the contact point is a plane.

3. The forming sheet clamp according to claim 1 or 2, characterized in that: A break groove is formed between adjacent contact points.

4. The forming sheet clamp according to claim 1, characterized in that: The upper and lower surfaces of the clamping device are flat or inclined surfaces.

5. The forming sheet clamp according to claim 1 or 4, characterized in that: The lower surface of the clamping device is provided with an arc transition surface at the connection between the bottom of the fixing clamp and the lower surface of the clamping device; The side and upper surface of the clamping device are also provided with a reinforcing structure at the connection with the fixing clamp.

6. The forming sheet clamp according to claim 1, characterized in that: The clamping device is integrally formed with the corresponding fixing clamp or is detachably connected.

7. The forming sheet clamp according to claim 1, characterized in that: The outer surface of the bow ring is covered with a protective sleeve, and the surface of the protective sleeve is provided with an anti-slip structure.

8. The forming sheet clamp according to claim 1, characterized in that: The fixing clamp is made of rigid plastic and is connected to the bow ring by injection molding; wherein, the connection position between the bow ring and the fixing clamp is also provided with a limiting structure for limiting the fixing clamp. Alternatively, the fixing clamp is mechanically or adhesively connected to the bow ring; Alternatively, the fixing clamp and the bow ring are integrally injection molded.

9. The forming sheet clamp according to claim 1, characterized in that: Each of the aforementioned fixed clamps is also provided with an adaptive clamp, which can conform to the tooth body.

10. The forming sheet clamp according to claim 9, characterized in that: The adaptive chuck also has an incremental area on its contact surface for contacting the tooth.

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