Jaw pad and preparation method thereof

Abstract

The invention discloses a jaw pad and a preparation method thereof. The jaw pad comprises a bag, wherein the bag comprises a bag-shaped shell, a bag-shaped cavity and a filling material filled in the bag-shaped cavity; the jaw pad is in contact with the appliance and does not cover a tooth cutting area. The jaw pad provided by the invention can realize dynamic adjustment of occlusion, is adaptive to tooth forms of patients, is more accurate and comfortable in occlusion shaping, can effectively improve the occlusion stability, is softer in material, improves the comfort and reduces tooth wear.

Description

Technical Field

[0001] The invention relates to a jaw pad and a preparation method thereof. Background Art

[0002] During orthodontic treatment, some patients need to use jaw pads to open their bite and release their jaws before they can undergo subsequent orthodontic treatment due to clinical symptoms such as deep overbite and locked jaws. Current jaw pad products include resin jaw pads bonded to teeth, cavitating jaw pads integrally formed with invisible braces, and solid jaw pads bonded to invisible braces. Existing jaw pad products have a fixed height and a fixed design position. During orthodontic treatment, teeth are in a dynamic movement process, and fixed jaw pad designs often cannot meet clinical precision requirements after being used for a period of time. For resin jaw pads bonded to teeth, doctors can only reduce the height of the jaw pads by manual grinding, which brings an inconvenient clinical experience to both doctors and patients. At the same time, the shapes of existing jaw pads are mostly simple smooth planes or simply designed virtual occlusal structures, which are quite different from the actual occlusal pits and fissures of teeth, so there are many problems such as inaccurate occlusion, discomfort, and instability. Summary of the invention

[0003] In order to overcome the defects of the existing jaw pads such as inaccurate occlusion, discomfort and instability, the present invention provides a jaw pad and a preparation method thereof. The jaw pad of the present invention can realize dynamic occlusion adjustment, adapt to the patient's tooth shape, and make the occlusion more accurate and comfortable, which can effectively improve the occlusal stability. The material is softer, which improves comfort and reduces tooth wear.

[0004] The present invention adopts the following technical solutions to solve the above technical problems:

[0005] The present invention provides a jaw pad, which comprises a capsule, wherein the capsule comprises a capsule-shaped shell, a capsule-shaped cavity and a filling material filled in the capsule-shaped cavity; the capsule contacts with an orthodontic appliance and does not cover an incisor area.

[0006] In the present invention, the jaw pad can be arranged on one or both sides of the posterior tooth area of ​​the orthodontic appliance when in use, and is used to open the occlusion of the posterior tooth area, wherein the posterior tooth area includes molars and canines, but does not include incisors.

[0007] Preferably, the jaw pad is arranged on the surface of the posterior teeth area of ​​at least one side of the orthodontic appliance close to the opposing jaw. By introducing a flexible jaw pad into the jaw surface of the posterior teeth area of ​​at least one side of the orthodontic appliance, the occlusal surface is adapted and the function of opening the bite is satisfied.

[0008] Preferably, the molars may include first premolars, second premolars, first molars and second molars, ie teeth No. 4 to 7.

[0009] In the present invention, the side of the jaw pad in contact with the orthodontic appliance can be adapted to the anatomical shape or planar shape of the bottom surface of the teeth.

[0010] In the present invention, the height of the jaw pad can be 2-10 mm, for example, 4 mm, 6 mm or 8 mm.

[0011] In the present invention, the elongation at break of the material of the sac-like outer shell can be 30-1500%, preferably 350-940%, for example, 370% or 650%.

[0012] In the present invention, the hardness of the material of the sac-like outer shell can be 30-95A, preferably 42-85A, for example, 62A or 70A.

[0013] In the present invention, the thickness of the sac-like outer shell can be 0.5-2 mm, preferably 0.5-0.8 mm, for example, 700 μm.

[0014] In the present invention, the thickness-diameter ratio of the sac-like outer shell can be 1:(0.1-9). The thickness-diameter ratio of the sac-like outer shell refers to the wall thickness of the sac-like outer shell: (the height of the jaw pad - the wall thickness of the sac-like outer shell).

[0015] In the present invention, the water absorption rate of the material of the sac-like outer shell can be 0.05%-150%.

[0016] Preferably, the water absorption rate of the material of the sac-like outer shell is 0.05%-5%, preferably 0.05%-2%, more preferably 0.05%-1%, for example, 0.1% or 0.5%. The percentage is the mass increase of the sac-like outer shell after water absorption accounting for the mass percentage of the sac-like outer shell before water absorption. When the material of the sac-like outer shell has a low water absorption rate, there are no swelling through holes or the diameter of the swelling through holes is small in this case. During the biting process, the filling material is always in the sac-like cavity of the jaw pad, which can play a stronger supporting role, thereby better balancing the biting force.

[0017] Preferably, the water absorption rate of the material of the sac-like outer shell is 5%-150%, preferably 5%-90%, more preferably 10%-60%. The percentage is the mass increase of the sac-like outer shell after water absorption accounting for the mass percentage of the sac-like outer shell before water absorption. The material of the sac-like outer shell has a high water absorption rate. At this time, the material contains certain swelling through holes, which can meet the slow-release function. For example, when the filling material is rose flavor essence, the rose essence can be slowly released through the swelling through holes to achieve the effect of lasting fresh breath.

[0018] Among them, the water absorption rate of the material of the sac-like outer shell is measured by the following method: at 23°C, the material is completely immersed in water for 24 h, and the mass of the material before and after is tested. The water absorption rate is calculated according to the following formula:

[0019]

[0020] In the present invention, the material of the sac-shaped outer shell can be silicone rubber, thermoplastic elastomer or thermoplastic.

[0021] In the present invention, the functions of the sac-shaped cavity include but are not limited to connecting a catheter, pre-storing a surplus of functional filling liquid, and slow-release of functional liquid.

[0022] In the present invention, the filling material can include one or more of liquid, gas, phase change material and non-Newtonian fluid.

[0023] Among them, the liquid can include water and / or a solution containing functional reagents.

[0024] Among them, the functional reagents in the solution containing functional reagents preferably include one or more of fragrance, indicator and drug.

[0025] Among them, the fragrance is preferably essence, and the essence is preferably strawberry flavor essence and / or rose flavor essence.

[0026] Among them, the indicator is preferably a saliva indicator.

[0027] Among them, the drug is preferably an anti-caries drug and / or a periodontitis treatment drug. Among them, the gas can include one or more of air, nitrogen, carbon dioxide and oxygen, for example, air.

[0028] Among them, the phase change material can be a material that is liquid at room temperature and solid at body temperature, and is preferably phase change wax.

[0029] Among them, the non-Newtonian fluid is a shear-thickening substance, usually a material system that can become hard when an impact force greater than 2N is applied, and preferably includes one or more of agar, thick sugar water and apple pulp. When the non-Newtonian fluid is filled in the sac-shaped cavity, the biting force applied by tooth occlusion will make it thicken and increase in hardness, which can better neutralize the biting force.

[0030] In the present invention, when the occlusal pad includes at least two such sacs, the occlusal pad may further include a catheter connecting at least two such sacs. The function of the catheter is to connect independent sacs. When biting, the filling material in the sac-shaped cavity can be extruded into the catheter, which helps to increase the adaptability of the occlusal pad and balance the biting force.

[0031] Among them, the cross-sectional shape of the catheter is preferably circular, oval, square, trapezoidal or triangular.

[0032] Among them, the inner diameter of the catheter is preferably 0.05 - 5 mm.

[0033] Among them, the wall thickness of the catheter is preferably 0.02 - 2 mm.

[0034] Preferably, the catheter is wholly or partially retractable or non-retractable.

[0035] In the present invention, the filling amount of the filling material can be selected according to actual conditions. When the jaw pad does not include a catheter, the filling amount of the filling material must satisfy: the height of the jaw pad after filling can meet the amount required for opening the bite; when the jaw pad includes a catheter, the filling amount of the filling material must satisfy: the height of the jaw pad after filling can meet the amount required for opening the bite and the required occupancy of the catheter.

[0036] In the present invention, the sac-like shell has elasticity. When the volume of the filling material is less than or equal to the volume of the sac-like cavity, that is, the filling amount of the filling material is less than or equal to 100%, the sac-like cavity does not deform; when the volume of the filling material is greater than the volume of the sac-like cavity, that is, the filling amount of the filling material is greater than 100%, the sac-like shell deforms, and the volume of the deformed sac-like cavity is greater than the initial volume of the sac-like cavity. In the present invention, the filling amount of the filling material can be 0 or more, preferably 10%-200%, and more preferably 100-130%, and the percentage is the percentage of the volume of the filling material to the initial volume of the sac-like cavity.

[0037] In the present invention, when the jaw pad includes the conduit, the conduit may also be filled with the filling material as described above, and the filling amount of the filling material is preferably 0-100%, where the percentage is the percentage of the volume of the filling material to the volume of the conduit.

[0038] In the present invention, the jaw pad can be fixed to the orthodontic appliance by conventional methods in the art, preferably by bonding, plugging, snapping, welding or embedding.

[0039] The bonding includes, for example, bonding the jaw pad and the appliance using glue.

[0040] The welding may be performed by, for example, using a laser to weld the jaw pad and the orthodontic appliance.

[0041] The insertion, for example, fixes the jaw pad to the orthodontic appliance with a rod-shaped attachment through a sleeve-type side wing. The rod-shaped attachment and the orthodontic appliance can be bonded with glue.

[0042] The buckling is, for example, to buckle the jaw pad to the appliance with a buckle-shaped attachment through a side wing with holes. The buckle-shaped attachment and the appliance can be bonded with glue.

[0043] Among them, when the jaw pad is fixed on the appliance by embedding, the appliance is provided with a cavity for accommodating the jaw pad, and the jaw pad is arranged in the cavity of the appliance. When the jaw pad is arranged in the cavity of the appliance, the jaw pad will expand after absorbing water, resulting in an increase in volume. The expanded jaw pad will fit more closely to the inner wall of the cavity of the appliance. At this time, the appliance can be fixed more firmly on the jaw pad and play a stronger supporting role during the biting process, better balancing the biting force.

[0044] In the present invention, the appliance is a dental instrument that can be used to correct dental and maxillofacial deformities. Its function is to adjust the positions of teeth and jaws by applying appropriate pressure and force to correct various problems such as jaw malalignment, tooth crowding, tooth irregularity, and poor occlusion.

[0045] In some preferred embodiments of the present invention, the appliance is an invisible appliance. The invisible appliance is usually formed by heating and softening a transparent thermoplastic film and shaping it on a required mold under a certain mechanical external force or pressure. Among them, the material of the thermoplastic film usually adopts a thermoplastic polymer material. Such an invisible appliance is also called an invisible dental brace and can generally be removed from the oral cavity, and the patient can remove and wear it by himself.

[0046] The present invention also provides a preparation method of the jaw pad as described above, which includes the following steps: filling the filling material into the sac-shaped cavity and then sealing it to obtain the jaw pad.

[0047] In the present invention, the sac-shaped outer shell can be prepared by conventional methods in the art, preferably including injection molding, injection molding, thermoforming, or additive manufacturing.

[0048] In the present invention, the filling method can be injection, embedding, or gas compression.

[0049] In the present invention, the filling equipment can be conventional equipment in the art, preferably a filling machine.

[0050] In the present invention, the jaw pad includes a catheter, and the catheter can be prepared by conventional methods in the art, preferably by injection molding, injection molding, thermoforming, or additive manufacturing.

[0051] In the present invention, the jaw pad includes a catheter, and the connection between the catheter and the jaw pad can be achieved by conventional connection methods in the art, preferably by welding.

[0052] Among them, the welding equipment is preferably a heat sticker.

[0053] In the present invention, the sealing method can be conventional methods in the art, preferably heat sealing, welding, or glue bonding.

[0054] The heat sealing method may be a conventional method in the art, preferably high-frequency heat sealing, which is also called high-frequency heat sealing, and generally refers to heat sealing using electromagnetic waves with a frequency greater than 100 kHz.

[0055] The heat sealing device may be conventional equipment in the art, preferably a radio frequency electronic heat sealing machine.

[0056] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0057] The reagents and raw materials used in the present invention are commercially available.

[0058] The positive and progressive effects of the present invention are:

[0059] The jaw pad of the present invention can realize dynamic adjustment of occlusion. The jaw pad of the present invention has an adaptive function. When used in orthodontic correction, it can play a role in opening the bite or releasing the locked jaw. The interior of the jaw pad is composed of fluid, and it can be shaped accordingly under stress. When placed in the posterior tooth area of ​​the jaw, the jaw pad automatically shapes according to the shape of the occlusal surface during occlusion, and is accurately fixed. The lifting height of the occlusion is also dynamically adjusted as the occlusal situation changes. When the jaw pad is placed on both the left and right sides, the fluids on the left and right sides can be connected through a catheter to balance the occlusal forces on the left and right sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 This is a top view of the orthodontic appliance prepared in Example 1.

[0061] Figure 2 This is a rear view of the orthodontic appliance prepared in Example 1.

[0062] Figure 3 This is a front view of the orthodontic appliance prepared in Example 1.

[0063] Figure 4 This is a side view of the orthodontic appliance prepared in Example 1.

[0064] Figure 5 This is a top view of the jaw pad structure schematic diagram of the orthodontic device prepared in Example 1.

[0065] Figure 6 This is a rear view of the schematic diagram of the jaw pad structure of the orthodontic appliance prepared in Example 1.

[0066] Figure 7 This is a disassembly diagram of the jaw pad structure of the orthodontic appliance prepared in Example 1.

[0067] Figure 8 This is a top view of the bilateral jaw pad structure containing catheters in the orthodontic appliance prepared in Example 2.

[0068] Figure 9Side view of the bilateral occlusal pad structure with a conduit in the appliance prepared in Example 2.

[0069] Figure 10 Front view of the bilateral occlusal pad structure with a conduit in the appliance prepared in Example 2.

[0070] Figure 11 Three-dimensional structure diagram of the bilateral occlusal pad structure with a conduit in the appliance prepared in Example 2.

[0071] Figure 12 Rear view of the bilateral occlusal pad structure with a conduit in the appliance prepared in Example 2.

[0072] Figure 13 Bottom view of the bilateral occlusal pad structure with a conduit in the appliance prepared in Example 2.

[0073] Figure 14 Schematic front view of the disassembled bilateral occlusal pad structure with a conduit in the appliance prepared in Example 2.

[0074] Figure 15 Schematic rear view of the disassembled bilateral occlusal pad structure with a conduit in the appliance prepared in Example 2.

[0075] Reference numerals: 1: Appliance; 2: Occlusal pad; 3: Sac; 4: Flank; 5: Button-shaped attachment; 6: Conduit. Detailed implementation manners

[0076] The present invention will be further described below by way of examples, but the present invention is not limited to the scope of the described examples. For the experimental methods without specific conditions in the following examples, they are carried out according to conventional methods and conditions, or selected according to the product instructions.

[0077] The appliance in the following examples is an invisible dental appliance formed by thermoforming a thermoplastic polymer material into a thermoformed film sheet with a cavity having the same shape as the patient's dental arch.

[0078] Example 1

[0079] As Figures 1-4 shown, on the surface of the posterior teeth area on one side of the appliance 1 adjacent to the opposing teeth, an occlusal pad 2 is provided respectively. The occlusal pad 2 includes a sac 3 and a perforated flank 4. The side of the sac 3 in contact with the appliance 1 is adapted to the anatomical shape of the tooth bottom surface. The appliance 1 further includes a button-shaped attachment 5. As Figures 5-7 shown, the appliance 1 and the occlusal pad 2 are buckled through the perforated flank 4 and the button-shaped attachment 5. Among them, the button-shaped attachment 5 and the appliance 1 are bonded with glue.

[0080] Among them, the occlusal pad 2 is prepared by a mold forming process. Specifically, a vacuum forming mold is used to prepare a hollow occlusal pad mold. The hollow part corresponds to a sac-shaped cavity. The material of the sac-shaped shell is thermoplastic polyurethane elastomer TPU, with a hardness of 85A and a water absorption rate of 2.15%. Water is filled into the sac-shaped cavity with a filling amount of 100%. The cross-sectional shape of the catheter is square. The occlusal pad can be obtained by sealing with a heat bonding machine. The height of the occlusal pad is 2 mm, and the wall thickness of the sac-shaped shell is 0.5 mm; the thickness-diameter ratio of the sac-shaped shell is 1:2. The wing 4 is perforated, and the perforated wing 4 is bonded to the occlusal pad 2 with glue. The buckle-shaped accessory 5 is bonded to the orthodontic appliance 1. The occlusal pad 2 is fixed to the orthodontic appliance 1 through the buckling of the perforated wing 4 and the buckle-shaped accessory 5.

[0081] The prepared occlusal pad has good bite force and can meet the need to open the occlusion.

[0082] Example 2

[0083] As Figures 8-13 shown, on the surfaces of the two posterior tooth regions of the orthodontic appliance 1 close to the opposing teeth on both sides, an occlusal pad 2 is provided respectively. The occlusal pad 2 includes a sac 3, a perforated wing 4, and an integrally telescopic catheter 6 connecting the sacs 3 on the left and right sides; among them, the side of the sac 3 in contact with the orthodontic appliance 1 conforms to the anatomical shape of the tooth bottom surface; the connection structure of the catheter 6 in the occlusal pad 2 with the two sacs 3 is as Figure 14 and Figure 15 shown; the orthodontic appliance 1 further includes a buckle-shaped accessory 5; the orthodontic appliance 1 and the occlusal pad 2 are fixed by buckling through the perforated wing 4 and the buckle-shaped accessory 5. Among them, the buckle-shaped accessory 5 is bonded to the orthodontic appliance 1 with glue.

[0084] Among them, the occlusal pad 2 is prepared by a mold forming process. Specifically, a vacuum forming mold is used to prepare a hollow occlusal pad mold. The hollow part corresponds to a sac-shaped cavity. The material of the sac-shaped shell is thermoplastic polyurethane elastomer TPU, with a hardness of 85A and a water absorption rate of 2.15%. Water is filled into the sac-shaped cavity with a filling amount of 100%. The cross-sectional shape of the catheter is square. The occlusal pad can be obtained by sealing with a heat bonding machine. The height of the occlusal pad is 2 mm, and the wall thickness of the sac-shaped shell is 0.5 mm; the thickness-diameter ratio of the sac-shaped shell is 1:2. The wing 4 is perforated, and the perforated wing 4 is bonded to the occlusal pad 2 with glue. The buckle-shaped accessory 5 is bonded to the orthodontic appliance 1. The occlusal pad 2 is fixed to the orthodontic appliance 1 through the buckling of the perforated wing 4 and the buckle-shaped accessory 5.

[0085] Among them, the cross-sectional shape of the catheter is circular; the inner diameter of the catheter is 0.5 mm; the wall thickness of the catheter is 0.25 mm.

[0086] The prepared occlusal pad has good bite force and can meet the need to open the occlusion. Moreover, the two sacs of the occlusal pad are respectively arranged in the posterior tooth regions on the left and right sides. Since the catheter connects the two sacs of the occlusal pad, the bite force on the left and right can be better balanced.

[0087] Example 3

[0088] On the surfaces of the posterior tooth regions on both sides of the appliance 1 adjacent to the opposing teeth, a occlusal pad 2 is provided respectively. The occlusal pad 2 includes a bladder 3, a sleeve-shaped flank 4 and a conduit 6 connecting the bladders 3 on the left and right sides; wherein, the side of the bladder 3 in contact with the appliance 1 conforms to the anatomical shape of the tooth bottom surface; the connection structure of the conduit 6 in the occlusal pad 2 with the two bladders 3 is the same as that in Example 2; the appliance 1 further includes a rod-shaped attachment; the appliance 1 and the occlusal pad 2 are fixedly connected by inserting the sleeve-shaped flank 4 and the rod-shaped attachment.

[0089] Among them, the occlusal pad 2 is prepared by a mold forming process. Specifically, a vacuum forming mold is used to prepare a hollow occlusal pad mold, and the hollow part corresponds to a bladder-shaped cavity. The material of the bladder-shaped shell is thermoplastic polyurethane elastomer silicone rubber, with a hardness of 42A and a water absorption rate of 0.05%. Air is filled into the bladder-shaped cavity, and the filling amount is 130%. The cross-sectional shape of the conduit is trapezoidal. Using a heat bonding machine to seal it can obtain the occlusal pad. The height of the occlusal pad is 2 mm, and the wall thickness of the bladder-shaped shell is 1 mm; the thickness-diameter ratio of the bladder-shaped shell is 1:1. The sleeve-shaped flank 4 is bonded to the occlusal pad 2 with glue, and the rod-shaped attachment is bonded to the appliance 1. The occlusal pad 2 is fixed on the appliance 1 by inserting the sleeve-shaped flank 4 and the rod-shaped attachment.

[0090] Among them, the cross-sectional shape of the conduit is circular; the inner diameter of the conduit is 0.5 mm; the wall thickness of the conduit is 0.25 mm.

[0091] The prepared occlusal pad has good bite force and can meet the need to open the occlusion. Moreover, the two bladders of the occlusal pad are respectively arranged in the posterior tooth regions on the left and right sides. Since the conduit connects the two bladders of the occlusal pad, the bite force on the left and right can be better balanced.

[0092] Example 4

[0093] On the surfaces of the posterior tooth regions on both sides of the appliance 1 adjacent to the opposing teeth, a occlusal pad 2 is provided respectively. The occlusal pad 2 includes a bladder 3, a sleeve-shaped flank 4 and a conduit 6 connecting the bladders 3 on the left and right sides; wherein, the side of the bladder 3 in contact with the appliance 1 conforms to the anatomical shape of the tooth bottom surface; the connection structure of the conduit 6 in the occlusal pad 2 with the two bladders 3 is the same as that in Example 2; the appliance 1 further includes a rod-shaped attachment; the appliance 1 and the occlusal pad 2 are fixedly connected by inserting the sleeve-shaped flank 4 and the rod-shaped attachment.

[0094] Among them, the occlusal pad 2 is prepared by a mold forming process. Specifically, a vacuum forming mold is used to prepare a hollow occlusal pad mold, and the hollow part corresponds to a sac-shaped cavity. The material of the sac-shaped shell is thermoplastic polyurethane elastomer TPE, with a hardness of 70A and a water absorption rate of 1.5%. The non-Newtonian fluid agar is filled into the sac-shaped cavity with a filling amount of 100%. The cross-sectional shape of the catheter is oval. The occlusal pad can be obtained by using a heat bonding machine to seal the opening. The height of the occlusal pad is 2 mm, and the wall thickness of the sac-shaped shell is 0.7 mm; the ratio of the wall thickness to the diameter of the sac-shaped shell is 0.7:2.3. The sleeve-shaped side wings 4 are bonded to the occlusal pad 2 with glue, and the rod-shaped attachments are bonded to the orthodontic appliance 1. The occlusal pad 2 is fixed to the orthodontic appliance 1 by inserting and connecting the sleeve-shaped side wings 4 and the rod-shaped attachments.

[0095] Among them, the cross-sectional shape of the catheter is circular; the inner diameter of the catheter is 0.5 mm; the wall thickness of the catheter is 0.25 mm.

[0096] The prepared occlusal pad has good bite force and can meet the need to open the occlusion. When the bite force is uneven, the non-Newtonian fluid can buffer and neutralize the bite strength. Moreover, the two sacs of the occlusal pad are respectively arranged in the left and right posterior tooth areas. Since the catheter connects the two sacs of the occlusal pad, the left and right bite forces can be better balanced.

[0097] Example 5

[0098] On the surface of both sides of the posterior tooth area of the orthodontic appliance 1 close to the opposing teeth, an occlusal pad 2 is provided respectively. The occlusal pad 2 includes a sac 3 and a catheter 6 connecting the sacs 3 on the left and right sides; among them, the side of the sac 3 in contact with the orthodontic appliance 1 is adapted to the anatomical shape of the tooth bottom surface; the connection structure of the catheter 6 in the occlusal pad 2 and the two sacs 3 is the same as that in Example 2; the occlusal pad 2 and the orthodontic appliance 1 are welded together by laser welding.

[0099] Among them, the occlusal pad 2 is prepared by a mold forming process. Among them, the occlusal pad 2 is prepared by a mold forming process. Specifically, a vacuum forming mold is used to prepare a hollow occlusal pad mold, and the hollow part corresponds to a sac-shaped cavity. The material of the sac-shaped shell is thermoplastic polyurethane elastomer TPE, with a hardness of 70A and a water absorption rate of 0.2%. The saliva indicator is filled into the sac-shaped cavity with a filling amount of 100%. The cross-sectional shape of the catheter is oval. The occlusal pad can be obtained by using a heat bonding machine to seal the opening. The height of the occlusal pad is 4 mm, and the wall thickness of the sac-shaped shell is 0.7 mm; the ratio of the wall thickness to the diameter of the sac-shaped shell is 0.7:1.3. The occlusal pad 2 and the orthodontic appliance 1 are welded together by laser welding.

[0100] Among them, the cross-sectional shape of the catheter is circular; the inner diameter of the catheter is 0.5 mm; the wall thickness of the catheter is 0.25 mm.

[0101] Example 6

[0102] The occlusal pad structure and the connection method between the occlusal pad 2 and the orthodontic appliance 1 in Example 6 are the same as those in Example 5.

[0103] The jaw pad 2 is prepared by a mold forming process, and specifically a hollow jaw pad mold is prepared by a blister mold. The hollow part corresponds to a saccular cavity. The material of the saccular shell is thermoplastic polyurethane elastomer TPE, with a hardness of 70A and a water absorption rate of 60%. The saliva indicator is filled into the saccular cavity, and the filling amount is 100%. The cross-sectional shape of the catheter is elliptical. The jaw pad can be obtained by sealing with a hot laminating machine. The height of the jaw pad is 4mm, and the wall thickness of the saccular shell is 0.7mm; the thickness-to-diameter ratio of the saccular shell is 0.7:1.3. The jaw pad 2 is welded to the orthodontic appliance 1 by laser welding.

[0104] The cross-sectional shape of the catheter is circular; the inner diameter of the catheter is 0.5 mm; and the wall thickness of the catheter is 0.25 mm.

[0105] Example 7

[0106] The jaw pad structure and the connection method between the jaw pad 2 and the orthodontic appliance 1 of Example 7 are the same as those of Example 5.

[0107] The jaw pad 2 is prepared by a mold forming process, specifically, a hollow jaw pad mold is prepared by a blister mold, the hollow part corresponds to a saccular cavity, the material of the saccular shell is a thermoplastic polyurethane elastomer TPE, the hardness is 70A, the water absorption rate is 70%, the saliva indicator is filled into the saccular cavity, the filling amount is 100%, the cross-sectional shape of the catheter is elliptical, and the jaw pad is obtained by sealing with a hot laminating machine, the height of the jaw pad is 4mm, the wall thickness of the saccular shell is 0.7mm; the thickness-to-diameter ratio of the saccular shell is 0.7:1.3. The jaw pad 2 is welded to the orthodontic appliance 1 by laser welding.

[0108] The cross-sectional shape of the catheter is circular; the inner diameter of the catheter is 0.5 mm; and the wall thickness of the catheter is 0.25 mm.

[0109] Example 8

[0110] The height of the jaw pad of Example 8 is 6 mm, and the rest is the same as that of Example 7.

[0111] The jaw pad prepared in Example 5-8 has good bite force and can meet the demand for open bite. The two bags of the jaw pad are respectively arranged on the left and right posterior teeth areas. Since the catheter connects the two bags of the jaw pad, the left and right bite forces can be better balanced. At the same time, the jaw pad can also slowly release saliva indicators to maintain oral safety.

[0112] Example 9

[0113] The jaw pad structure and the connection method between the jaw pad 2 and the orthodontic appliance 1 of Example 9 are the same as those of Example 5.

[0114] The jaw pad 2 is prepared by a mold forming process, specifically, a hollow jaw pad mold is prepared by a blister mold, the hollow part corresponds to a sac-like cavity, the material of the sac-like shell is a thermoplastic polyurethane elastomer TPE, the hardness is 70A, the water absorption rate is 70%, the rose essence is filled into the sac-like cavity, the filling amount is 100%, the cross-section of the catheter is elliptical, and the jaw pad is sealed by a hot laminating machine. The height of the jaw pad is 6mm, the wall thickness of the sac-like shell is 0.7mm; the thickness-to-diameter ratio of the sac-like shell is 0.7:2.3. The jaw pad 2 is welded to the orthodontic appliance 1 by laser welding.

[0115] The cross-sectional shape of the catheter is circular; the inner diameter of the catheter is 0.5 mm; and the wall thickness of the catheter is 0.25 mm.

[0116] Embodiment 10-11

[0117] The jaw pad height of Example 10 is 8 mm, the jaw pad height of Example 11 is 10 mm, and the rest are the same as Example 9.

[0118] The jaw pads prepared in Examples 9-11 have good bite force and can meet the needs of opening the bite. The two bags of the jaw pad are respectively arranged on the left and right posterior tooth areas. Since the catheter connects the two bags of the jaw pad, the bite force of the left and right sides can be better balanced. At the same time, the jaw pad can also slowly release rose essence to continuously freshen the breath.

[0119] Example 12

[0120] The jaw pad structure and the connection method between the jaw pad 2 and the orthodontic appliance 1 of Example 12 are the same as those of Example 5.

[0121] The jaw pad 2 is prepared by a mold forming process, specifically, a hollow jaw pad mold is prepared by a blister mold, the hollow part corresponds to the sac-like cavity, the material of the sac-like shell is thermoplastic polyurethane elastomer TPE, the hardness is 70A, the water absorption rate is 70%, the anti-caries drug is filled into the sac-like cavity, the filling amount is 100%, the cross-sectional shape of the catheter is elliptical, and the jaw pad can be obtained by sealing with a hot laminating machine. The height of the jaw pad is 6mm, and the wall thickness of the sac-like shell is 0.7mm; the thickness-to-diameter ratio of the sac-like shell is 0.7:2.3. The jaw pad 2 is welded to the orthodontic appliance 1 by laser welding;

[0122] The cross-sectional shape of the catheter is circular; the inner diameter of the catheter is 0.5 mm; and the wall thickness of the catheter is 0.25 mm.

[0123] The prepared jaw pad has good bite force and can meet the needs of opening the bite. The two capsules of the jaw pad are respectively arranged in the left and right posterior tooth areas. Since the catheter connects the two capsules of the jaw pad, the bite force of the left and right sides can be better balanced. At the same time, it can also slowly release anti-caries drugs to treat or prevent caries.

[0124] Example 13

[0125] The connection mode of the occlusal pad structure and the occlusal pad 2 to the appliance 1 in Example 13 is the same as that in Example 5.

[0126] Among them, the occlusal pad 2 is prepared by a mold forming process. Specifically, a vacuum forming mold is used to prepare a hollow occlusal pad mold. The hollow part corresponds to a sac-like cavity. The material of the sac-like shell is thermoplastic polyurethane elastomer TPE, with a hardness of 70A and a water absorption rate of 70%. The drug for treating periodontitis is filled into the sac-like cavity with a filling amount of 100%. The cross-sectional shape of the catheter is oval. The occlusal pad can be obtained by using a heat bonding machine to seal the opening. The height of the occlusal pad is 6 mm, and the wall thickness of the sac-like shell is 0.7 mm; the thickness-diameter ratio of the sac-like shell is 0.7:2.3. The occlusal pad 2 is welded to the appliance 1 by laser welding;

[0127] Among them, the cross-sectional shape of the catheter is circular; the inner diameter of the catheter is 0.5 mm; the wall thickness of the catheter is 0.25 mm.

[0128] The prepared occlusal pad has good bite force and can meet the need to open the occlusion. The two sacs of the occlusal pad are respectively arranged in the left and right posterior tooth areas. Since the catheter connects the two sacs of the occlusal pad, the left and right bite forces can be better balanced. At the same time, the drug for treating periodontitis can be slowly released to maintain oral safety.

[0129] The above embodiments are the preferred embodiments of the invention, but the embodiments of the invention are not limited by the above examples. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the invention are equivalent.

Claims

1. A jaw pad, characterized in that, it includes a sac, and the sac includes a sac-shaped outer shell, a sac-shaped cavity, and a filling material filled in the sac-shaped cavity; the jaw pad contacts the orthodontic appliance and does not cover the incisor region.

2. The jaw pad according to claim 1, characterized in that, the elongation at break of the material of the sac-shaped outer shell is 30 - 1500%, preferably 350 - 940%, for example 370% or 650%; and / or, the hardness of the material of the sac-shaped outer shell is 30 - 95A, preferably 42 - 85A, for example 62A or 70A.

3. The jaw pad according to claim 1, characterized in that, the water absorption rate of the material of the sac-shaped outer shell is 0.05% - 150%; preferably, the water absorption rate of the material of the sac-shaped outer shell is 0.05% - 5%, more preferably 0.05% - 2%, for example 0.1% or 0.5%; preferably, the water absorption rate of the material of the sac-shaped outer shell is 5% - 150%, more preferably 5% - 90%, even more preferably 10% - 60%; and / or, the material of the sac-shaped outer shell is silicone rubber, thermoplastic elastomer or thermoplastic.

4. The jaw pad according to claim 1, characterized in that, the side of the jaw pad in contact with the orthodontic appliance conforms to the anatomical shape or planar shape of the tooth bottom surface; and / or, the height of the jaw pad is 2 - 10 mm, for example 4 mm, 6 mm or 8 mm; and / or, the wall thickness of the sac-shaped outer shell is 0.5 - 2 mm, preferably 0.5 - 1 mm, more preferably 0.5 - 0.8 mm, for example 0.7 mm; and / or, the thickness-diameter ratio of the sac-shaped outer shell is 1:(0.1 - 9), for example 1:1, 1:2, 0.7:1.3, 0.7:2.

3.

5. The jaw pad according to claim 1, characterized in that, the filling amount of the filling material is 0 and above, preferably 10% - 200%, more preferably 100 - 130%, and the percentage is the percentage of the volume of the filling material in the initial volume of the sac-shaped cavity.

6. The jaw pad according to claim 1, characterized in that, the filling material includes one or more of liquid, gas, phase change material and non-Newtonian fluid; wherein, the liquid preferably includes water and / or a solution containing a functional reagent; the functional reagent in the solution containing a functional reagent preferably includes one or more of an aromatic agent, an indicator and a drug; wherein, the aromatic agent is preferably an essence, and the essence is preferably a strawberry flavor essence and / or a rose flavor essence; the indicator is preferably a saliva indicator; the drug is preferably an anti-caries drug and / or a periodontitis treatment drug; wherein, the gas preferably includes one or more of air, nitrogen, carbon dioxide and oxygen, for example air; wherein, the phase change material is preferably a phase change wax; wherein, the non-Newtonian fluid is preferably one or more of agar, thick sugar water and apple pulp.

7. The jaw pad according to any one of claims 1 - 6, characterized in that, the jaw pad includes at least two of the sacs and a conduit connecting at least two of the sacs; preferably, the cross-sectional shape of the conduit is circular, oval, square, trapezoidal or triangular; Preferably, the inner diameter of the catheter is 0.05 - 5 mm; Preferably, the wall thickness of the catheter is 0.02 - 2 mm; Preferably, the whole or part of the catheter is telescopic or non-telescopic; Preferably, the catheter is filled with the filling material; the filling amount of the filling material is preferably 0 - 100%, and the percentage is the volume percentage of the filling material in the volume of the catheter.

8. The jaw pad according to claim 1, characterized in that the jaw pad is fixed to the appliance by bonding, plugging, buckling, welding or embedding.

9. A method for preparing a jaw pad according to any one of claims 1 - 8, characterized in that it comprises the following steps: filling the filling material into the sac-shaped cavity and then sealing it to obtain the jaw pad.

10. The method for preparing a jaw pad according to claim 9, characterized in that the sac-shaped outer shell is made by injection molding, injection molding, thermoforming or additive manufacturing; and / or, the filling method is injection, pre-embedding or gas compression; and / or, the filling equipment is a filling machine; and / or, the jaw pad includes a catheter, and the connection between the catheter and the jaw pad is made by welding; wherein, the welding equipment is preferably a heat sticker; and / or, the sealing method is heat sealing, welding or glue bonding; wherein, the heat sealing equipment is preferably a radio frequency electronic heat sealer.

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