Jaw pad and preparation method thereof

Abstract

The invention discloses a jaw pad and a preparation method thereof. The jaw pad comprises n single-bag units, each single-bag unit comprises a bag-shaped cavity, a bag-shaped shell and a filling material filled in the bag-shaped cavity, and n is an integer and is larger than or equal to 2; the n single-bag units are connected with one another, and the n single-bag units are not communicated with one another. The jaw pad disclosed by the invention can realize dynamic adjustment of occlusion, is adaptive to tooth forms of patients, is more accurate and comfortable in occlusion shaping, improves the comfort and reduces tooth wear; the capsule-shaped cavity of each single capsule unit can be filled with different filling materials, so that the occlusal force can be better balanced and distributed, and the capsule-shaped cavity can also be used as a multifunctional carrier.

Description

Technical Field

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

[0002] During orthodontic treatment, some patients need to use a jaw pad to open the bite and relieve crossbite due to clinical symptoms such as deep overbite and locked occlusion before subsequent orthodontic treatment can be carried out. Current jaw pad products include resin jaw pads adhered to teeth, vacuole jaw pads integrally formed with invisible aligners, and solid jaw pads adhered to invisible aligners. The height and designed position of existing jaw pad products are fixed. However, during the orthodontic treatment process, teeth are in a dynamic movement process, and the fixed jaw pad design often fails to meet the clinical precision requirements after being used for a period of time. For the resin jaw pad adhered to teeth, doctors can only reduce the height of the jaw pad by manual grinding, which brings inconvenient clinical experiences to both doctors and patients. At the same time, the shapes of existing jaw pads are mostly simple smooth planes or virtual occlusion structures with simple designs, which have a large difference from the actual occlusal fossa and grooves of teeth. Therefore, there are many problems such as inaccurate occlusion, discomfort, and instability. Summary of the Invention

[0003] In order to overcome the defects of inaccurate occlusion, discomfort, and instability existing in existing jaw pads, the present invention provides a jaw pad and a preparation method thereof. By fixing the jaw pad of the present invention on the orthodontic appliance, dynamic adjustment of occlusion can be achieved, adapting to the morphology of the patient's teeth, with more accurate and comfortable occlusion shaping, improving comfort and reducing tooth wear; the sac-shaped cavities of each single sac unit can be filled with different filling materials, which can not only better balance the distribution of occlusal force but also serve as a multi-functional carrier to meet the function of opening the bite. By optimizing the single sac structure into a multi-sac structure, the hardness of the filler makes the occlusal surface morphology more stable.

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

[0005] The present invention provides a jaw pad, which includes n single sac units. The single sac unit includes a sac-shaped cavity, a sac-shaped outer shell, and a filling material filled in the sac-shaped cavity, where n is an integer and n≥2; the n single sac units are connected to each other and are not connected to each other.

[0006] In the present invention, the n single sac units can be filled with the same or different filling materials, preferably different filling materials.

[0007] In the present invention, the heights of the n sacs can be of uniform height or non-uniform height, preferably non-uniform height.

[0008] Among them, the distribution of the non-uniform height can be selected according to the actual situation, preferably in a gradient height distribution, such as low in the middle and high around, or high in the middle and low around.

[0009] In a specific embodiment of the present invention, the heights of the n sacs are distributed in the following order: the sacs located at the cusps are higher, and the other sacs are lower.

[0010] In the present invention, the side of the single sac unit in contact with the orthodontic appliance is adapted to the anatomical shape of the tooth bottom surface.

[0011] In the present invention, the shape of the occlusal pad can be a three-dimensional grid shape, a three-dimensional spider web shape, a three-dimensional tunnel shape or a three-dimensional spiral shape.

[0012] Among them, the cross-sectional shape of the single sac unit is preferably a polygon, more preferably a triangle, a quadrilateral or a hexagon, for example, a quadrilateral.

[0013] In the present invention, when in use, the occlusal pad can be arranged on one or both posterior tooth areas of the orthodontic appliance for opening the occlusion in the posterior tooth area, wherein the posterior tooth area includes molars and canines, but does not include incisors.

[0014] Preferably, the occlusal pad is arranged on the surface of at least one posterior tooth area of the orthodontic appliance adjacent to the opposing jaw, and a flexible occlusal pad is introduced by means of opposing the occlusal surface in at least one posterior tooth area of the orthodontic appliance to achieve self-adaptation of the occlusal surface while satisfying the function of opening the occlusion.

[0015] Among them, the posterior teeth may include the first premolar, the second premolar, the first molar and the second molar, that is, teeth No. 4-7.

[0016] In the present invention, the side of the occlusal pad in contact with the orthodontic appliance is adapted to the anatomical shape or planar shape of the tooth bottom surface.

[0017] In the present invention, the height of the occlusal pad can be 2-10 mm, for example, 4 mm, 6 mm or 8 mm.

[0018] In the present invention, the elongation at break of the material of the sac-like outer shell is 30-1500%, preferably 350-940%.

[0019] In the present invention, the hardness of the material of the sac-like outer shell is 30-95A, preferably 42-85A.

[0020] In the present invention, the wall thickness of the sac-like outer shell can be 0.5-2 mm, preferably 0.5-0.8 mm.

[0021] In the present invention, the thickness-diameter ratio of the sac-like outer shell can be 1:(0-9). 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 occlusal pad - the wall thickness of the sac-like outer shell).

[0022] In the present invention, the water absorption rate of the material of the sac-like outer shell is 0.05%-150%;

[0023] 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 percentage of the mass increase of the sac-like outer shell after water absorption to the mass 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 occlusion process, the filling material is always in the sac-like cavity of the occlusal pad, which can play a stronger supporting role, so that the occlusal force can be better balanced.

[0024] 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 percentage of the mass increase of the sac-like outer shell after water absorption to the mass of the sac-like outer shell before water absorption. When the material of the sac-like outer shell has a high water absorption rate, there are certain swelling through-holes in the material at this time, which can meet the sustained-release function. For example, when the filling material is rose flavor essence, the rose essence can be slowly released through the swelling through-holes, achieving the effect of lasting fresh breath. 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 hours, and the mass of the material before and after is tested. The water absorption rate is calculated according to the following formula:

[0025]

[0026] In the present invention, the material of the sac-like outer shell can be silicone rubber, thermoplastic elastomer or thermoplastic plastic.

[0027] In the present invention, the functions of the sac-like cavity include but are not limited to connecting a catheter, pre-storing a surplus of functional filling liquid, and sustained-release of functional liquid.

[0028] In the present invention, the filling amount of the filling material can be selected according to the actual situation, and the filling amount of the filling material needs to meet the requirement that the height of the occlusal pad after filling can meet the need to open the occlusion.

[0029] In the present invention, the sac-like outer shell has elasticity. When the volume of the filled filling material is less than or equal to the volume of the sac-like cavity, that is, when 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 filled filling material is greater than the volume of the sac-like cavity, that is, when the filling amount of the filling material is greater than 100%, the sac-like outer 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 and above, preferably 10%-200%, more preferably 100-130%. The percentage is the percentage of the volume of the filling material to the initial volume of the sac-like cavity.

[0030] In the present invention, the filling material may be one or more of a liquid, a gas, a phase change material, and a non-Newtonian fluid.

[0031] Among them, the liquid may be water or a solution containing a functional reagent. The functional reagent in the solution containing the functional reagent preferably includes one or more of a fragrance, an indicator, and a drug.

[0032] Among them, the fragrance is preferably an essence, such as a strawberry essence and / or a rose essence.

[0033] Among them, the indicator is preferably a saliva indicator.

[0034] Among them, the drug is preferably an anti-caries drug and / or a periodontitis treatment drug.

[0035] Among them, the gas may be one or more of air, nitrogen, carbon dioxide, and oxygen, such as air.

[0036] Among them, the phase change material may be a material that is liquid at room temperature and solid near body temperature, preferably a phase change wax. The phase change material can be arranged at the cusp position with a large occlusal strength to neutralize the occlusal strength.

[0037] Among them, the non-Newtonian fluid is a shear-thickening substance, usually a material system that can harden when an impact energy 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-like cavity, the occlusal force applied by tooth occlusion will make it thicken and increase in hardness, which can better neutralize the occlusal force.

[0038] In a preferred embodiment of the present invention, the filling material can be filled according to the following rule: a filling material with a greater hardness is filled at the position of the opposing cusp, and a filling material with a smaller hardness is filled in the area of the opposing tooth fossa.

[0039] In the above preferred embodiment, the filling material with a greater hardness is, for example, a non-Newtonian fluid.

[0040] In the above preferred embodiment, the filling material with a smaller hardness is, for example, water.

[0041] In the present invention, the occlusal pad can be fixed on the appliance by conventional methods in the art, preferably by bonding, plugging, buckling, welding, or embedding.

[0042] Among them, for the bonding, for example, glue is used to bond the occlusal pad and the appliance.

[0043] Among them, for the welding, for example, a laser is used to weld the occlusal pad and the appliance.

[0044] Among them, the plugging is, for example, to fix the occlusal pad on an appliance with a rod-shaped attachment through a sleeve-shaped side wing. Glue can be used for bonding between the rod-shaped attachment and the appliance.

[0045] Among them, the buckling is, for example, to buckle the occlusal pad on an appliance with a buckle-shaped attachment through a side wing with holes. Glue can be used for bonding between the buckle-shaped attachment and the appliance.

[0046] Among them, when the occlusal pad is fixed on the appliance by embedding, the appliance is provided with a cavity for accommodating the occlusal pad, and the occlusal pad is arranged in the cavity of the appliance. When the occlusal pad is arranged in the cavity of the appliance, the occlusal pad will expand after absorbing water, resulting in an increase in volume. The expanded occlusal pad will fit more closely with the inner wall of the cavity of the appliance. At this time, the appliance can be more firmly fixed on the occlusal pad and play a stronger supporting role during occlusion, better balancing the occlusal force.

[0047] 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.

[0048] In some preferred embodiments of the present invention, the appliance is an invisible appliance. The invisible appliance is usually made by heating and softening a transparent thermoformed film and molding it on a required mold under a certain mechanical external force or pressure. Among them, the material of the thermoformed film usually uses a thermoplastic polymer material. Such an invisible appliance is also called an invisible dental brace and can generally be disassembled from the oral cavity, and the patient can remove and wear it by himself / herself.

[0049] The present invention also provides a preparation method of the occlusal pad as described above, which includes the following steps: filling the filling material into the sac-shaped cavity in each single sac unit and then sealing it to obtain the occlusal pad.

[0050] In the present invention, the sac-shaped outer shell can be made by conventional methods in the art, preferably including injection molding, injection molding, thermoforming, or additive manufacturing.

[0051] In the present invention, the occlusal pad can be made by an integral molding method using a thermoforming mold or an injection mold.

[0052] In the present invention, the filling method can be injection, embedding, or gas compression.

[0053] In the present invention, the filling equipment can be conventional equipment in the art, preferably a filling machine.

[0054] In the present invention, the method for sealing can be a conventional method in the art, preferably heat sealing, welding or adhesive bonding.

[0055] Among them, the method for heat sealing can be a conventional method in the art, preferably high-frequency heat sealing. The high-frequency heat sealing, also known as radio-frequency heat sealing, generally refers to heat sealing using electromagnetic waves with a frequency greater than 100 Khz.

[0056] Among them, the equipment for heat sealing can be conventional equipment in the art, preferably a radio-frequency electronic heat sealer.

[0057] On the basis of conforming to the common knowledge in the art, the above preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0058] The reagents and raw materials used in the present invention are all commercially available.

[0059] The positive and progressive effects of the present invention are as follows:

[0060] The jaw pad of the present invention can achieve dynamic adjustment of occlusion, adapt to the tooth morphology of patients, the occlusion shaping is more accurate and comfortable, and the material is softer, improving comfort and reducing tooth wear; the sac-like cavities of each single sac unit can be filled with different filling materials, which can not only better balance and distribute the occlusal force, but also serve as a multi-functional carrier. The jaw pad of the present application has multiple single sac units. Compared with the structure containing only one single sac unit, when one single sac unit fails, the jaw pad still has the advantage that the overall function is not lost; the height of each single sac unit is adjustable, and when the overall shape is an "egg shape" with a high center and low periphery, it can fit the middle fossa and the surrounding cusp morphology of the posterior teeth. Description of the Drawings

[0061] Figure 1 Figure a of is the top view of the jaw pad mold of Example 1, and Figure b is the three-dimensional structure schematic diagram of the jaw pad mold of Example 1.

[0062] Figure 2 Figure a of is the top view of the jaw pad mold of Example 2, and Figure b is the three-dimensional structure schematic diagram of the jaw pad mold of Example 2.

[0063] Figure 3 Figure a of is the top view of the jaw pad mold of Example 3, and Figure b is the three-dimensional structure schematic diagram of the jaw pad mold of Example 3.

[0064] Figure 4 Figure a of is the top view of the jaw pad molds of Example 4 and Example 5, and Figure b is the three-dimensional structure schematic diagram of the jaw pad molds of Example 4 and Example 5.

[0065] Figure 5 Figure a of is the top view of the jaw pad mold of Example 6, and Figure b is the three-dimensional structure schematic diagram of the jaw pad mold of Example 6.

[0066] Figure 6 Figure a of this is the top view of the jaw pad mold of Example 7, and Figure b is the three-dimensional structure schematic diagram of the jaw pad mold of Example 7.

[0067] Figure 7 Figure a of this is the top view of the jaw pad mold of Example 8, and Figure b is the three-dimensional structure schematic diagram of the jaw pad mold of Example 8.

[0068] Figure 8 It is the three-dimensional structure diagram of the orthodontic appliance using an angel button to connect the jaw pad.

[0069] Figure 9 It is Figure 8 The right view of the structural disassembly schematic diagram of the orthodontic appliance of this.

[0070] Figure 10 It is Figure 8 The left view of the structural disassembly schematic diagram of the orthodontic appliance of this.

[0071] Figure 11 Figure a of this is Figure 8 The top view of the orthodontic appliance of this; Figure 11 Figure b of this is Figure 8 The front view of the orthodontic appliance of this; Figure 11 Figure c of this is Figure 8 The left view of the orthodontic appliance of this.

[0072] Figure 12 It is the three-dimensional structure diagram of the orthodontic appliance using laser welding to install the jaw pad.

[0073] Figure 13 It is Figure 12 The structural disassembly schematic diagram of the orthodontic appliance of this.

[0074] Figure 14 Figure a of this is Figure 12 The top view of the orthodontic appliance of this; Figure 14 Figure b of this is Figure 12 The front view of the orthodontic appliance of this; Figure 14 Figure c of this is Figure 12 The left view of the orthodontic appliance of this.

[0075] Figure 15 It is the three-dimensional structure diagram of the orthodontic appliance using a sleeve-type side wing to connect the jaw pad.

[0076] Figure 16 It is Figure 15 The front view of the structural disassembly schematic diagram of the orthodontic appliance of this.

[0077] Figure 17 It is Figure 15 The top view of the structural disassembly schematic diagram of the orthodontic appliance of this.

[0078] Figure 18 Figure a of this isFigure 15 Top view of the appliance Figure 18 Figure b of Figure 15 Front view of the appliance Figure 18 Figure c of Figure 15 Left view of the appliance

[0079] Reference numerals: 1: appliance, 2: occlusal pad, 3: sac, 4: wing, 5: button-shaped attachment, 6: rod-shaped attachment Detailed implementation mode

[0080] 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 specifications

[0081] The appliance in the following examples is an invisible dental appliance made of a thermoplastic polymer film material by thermocompression molding, which has a cavity consistent with the shape of the patient's dental arch

[0082] Example 1

[0083] An occlusal pad mold with a three-row multi-cell hollow structure is prepared by using a thermoforming mold (as shown in Figure 1 ), Figure 1 Figure a of Figure 2 Figure b of Figure 1 The grids in Figure 1 correspond to each single sac unit. As shown in Figure b of

[0084] The middle part of the square grid is recessed downward to form a hollow structure in the middle, and this hollow structure corresponds to the sac-shaped cavity of each single sac unit. The four walls of the grid correspond to the sac-shaped outer shell of the single sac unit. Among them, the material of the sac-shaped outer shell of the single sac unit is thermoplastic polyurethane elastomer TPU. The number of single sac units is 27 (3×9). Water is filled into the sac-shaped cavity of each single sac unit, and the occlusal pad with a quadrilateral cross-section shape of the single sac unit can be obtained by using a heat-sealing machine to seal the mouth. The shape of the occlusal pad is a three-dimensional grid shape, and the height of the occlusal pad is 2 mm. The wing 4 is punched, and the perforated wing 4 is bonded to the occlusal pad 2 with glue. The button-shaped attachment 5 is bonded to the appliance 1, and the occlusal pad 2 is fixed to the appliance 1 by buckling the perforated wing 4 and the button-shaped attachment 5

[0085] The prepared occlusal pad has good bite force, can meet the need to open the occlusion, and multiple single sac units play a role in strengthening the structure. When one single sac unit is damaged, the remaining single sac units can still be used normally

[0086] Example 2

[0087] The jaw pad mold with a three-row and multi-cell hollow structure is prepared by using a thermoforming mold (as Figure 2 shown), Figure 2 Figure a in Figure 2 is the top view of the jaw pad mold, Figure 2 Figure b in Figure 2 is the schematic three-dimensional structure diagram of the jaw pad mold, Figure 2 The square cells in Figure 2 correspond to each single-capsule unit. As Figure 2 shown in Figure b in Figure 2 , the middle part of the square cell is recessed downward to form a middle hollow structure, and this hollow structure corresponds to the capsule cavity of each single-capsule unit. The four walls of the square cell correspond to the capsule shell of the single-capsule unit. The number of single-capsule units is 21 (3×7);

[0088] Among them, the material of the capsule shell of the single-capsule unit is thermoplastic polyurethane elastomer silicone rubber. Strawberry flavor essence and water are filled into the capsule cavities of each single-capsule unit at intervals in turn, and then sealed with a heat bonding machine to obtain a jaw pad with a quadrilateral cross-sectional shape of the single-capsule unit. The shape of the jaw pad is a three-dimensional grid shape, the height of the jaw pad is 4 mm, the sleeve-shaped side wing 4 is bonded to the jaw pad 2 with glue, the rod-shaped attachment 6 is bonded to the orthodontic appliance 1, and the jaw pad 2 is fixed on the orthodontic appliance 1 through the insertion of the sleeve-shaped side wing 4 and the rod-shaped attachment 6.

[0089] The prepared jaw pad has good bite force and can meet the need to open the occlusion. It can not only play a role in strengthening the structure, but also slowly release strawberry flavor essence through a low-barrier film to keep the breath fresh for a long time.

[0090] Example 3

[0091] The jaw pad mold with a multi-row and multi-cell hollow structure is prepared by using a thermoforming mold (as Figure 3 shown), Figure 3 Figure a in Figure 3 is the top view of the jaw pad mold, Figure 3 Figure b in Figure 3 is the schematic three-dimensional structure diagram of the jaw pad mold, Figure 3 The circular cells in Figure 3 correspond to each single-capsule unit. As Figure 3 shown in Figure b in Figure 3 , the middle part of the circular cell is recessed downward to form a middle hollow structure, and this hollow structure corresponds to the capsule cavity of each single-capsule unit. The wall of the circular cell corresponds to the capsule shell of the single-capsule unit, and the total number of single-capsule units is 21 (3×7);

[0092] Among them, the material of the capsule shell is thermoplastic elastomer TPE. Agar and phase change wax are filled into the capsule cavities of the single-capsule units located at the cusp tips, rose flavor essence and water are filled into the capsule cavities of its single-capsule units, and then sealed with a heat bonding machine to obtain a jaw pad with a circular cross-sectional shape of the single-capsule unit. The shape of the jaw pad is a three-dimensional grid shape, and the height of the jaw pad is 6 mm. As Figures 15 - 18As shown, the sleeve - type flank 4 is bonded to the jaw pad 2 with glue, and the rod - shaped attachment 6 is bonded to the orthodontic appliance 1. The jaw pad 2 is fixed to the orthodontic appliance 1 by inserting and connecting the sleeve - type flank 4 and the rod - shaped attachment 6.

[0093] The jaw pad prepared in Example 3 has good bite force and can meet the need to open the occlusion. The non - Newtonian fluid or phase - change material filled in the single - capsule units at the cusp balances the bite force at the cusp, and the remaining single - capsule units are filled with rose essence and water, which can slowly release the rose essence and keep the breath fresh continuously.

[0094] Example 4

[0095] A multi - celled hollow jaw - pad mold arranged in a honeycomb pattern is prepared using a thermoforming mold (as Figure 4 shown). Figure 4 Figure a in Figure 4 is a top view of the jaw - pad mold, and Figure 4 Figure b in Figure 4 is a three - dimensional structural schematic diagram of the jaw - pad mold. The hexagonal grids in

[0096] correspond to the respective single - capsule units. As shown in Figure b in Figures 8 - 11 , the hexagonal grids bulge upward to form a hollow structure in the middle. This hollow structure corresponds to the cystic cavity of each single - capsule unit, and the four walls of the hexagonal grids correspond to the cystic shell of the single - capsule unit.

[0097] Example 5

[0098] In Example 5, a multi - celled hollow jaw - pad mold arranged in a honeycomb pattern is prepared using a thermoforming mold (as Figure 4 shown). The height of the jaw pad is 10 mm, and the others are the same as in Example 4.

[0099] The jaw pads prepared in Examples 4 - 5 have good bite force and can meet the need to open the occlusion. The non - Newtonian fluid or phase - change material filled in the single - capsule units at the cusp balances the bite force at the cusp, and the remaining single - capsule units are filled with rose essence and water, which can slowly release the rose essence and keep the breath fresh continuously.

[0100] Example 6

[0101] A three-dimensional honeycomb-shaped multi-grid hollow jaw pad mold (such as Figure 5 shown), Figure 5 Figure a is a top view of the jaw pad mold. Figure 5 Figure b is a schematic diagram of the three-dimensional structure of the jaw pad mold. Figure 5 The hexagonal grid in corresponds to each single capsule unit, such as Figure 5 As shown in Figure b, the hexagonal grid bulges upward to form a structure with a hollow center. The hollow structure corresponds to the sac-like cavity of each single-capsule unit, and the four walls of the hexagonal grid correspond to the sac-like outer shell of the single-capsule unit.

[0102] Among them, the total number of single-capsule units is 77, the material of the sac-shaped shell is thermoplastic elastomer TPE, the sac-shaped cavity of the single-capsule unit located at the apex of the tooth is filled with agar and phase change wax, and the sac-shaped cavity of the single-capsule unit is filled with saliva indicator and water, and then a hot-sealing machine is used to seal the single-capsule unit to obtain a jaw pad with a hexagonal cross-sectional shape. The shape of the jaw pad is a three-dimensional spider web, and the height of the jaw pad is 8 mm. The jaw pad 2 is welded to the orthodontic appliance 1 by laser welding.

[0103] The prepared jaw pad has excellent bite force and can meet the needs of opening the bite. The single-capsule unit located at the tooth tip is filled with non-Newtonian fluid or phase change material to balance the bite force at the tooth tip. The remaining single-capsule units are filled with saliva indicators and water, which can slowly release saliva indicators to maintain oral safety.

[0104] Example 7

[0105] A three-dimensional tunnel-shaped multi-grid hollow jaw pad mold (such as Figure 6 shown), Figure 6 Figure a is a top view of the jaw pad mold. Figure 6 Figure b is a schematic diagram of the three-dimensional structure of the jaw pad mold. Figure 6 The long strips in the grid correspond to the single capsule units, such as Figure 6 As shown in Figure b, the long strips are convex upwards, forming a hollow structure in the middle, which corresponds to the sac-like cavity of each single-sac unit, and the four walls of the long strip grids correspond to the sac-like shell of the single-sac unit;

[0106] The number of single capsule units is 36, the material of the capsule shell is thermoplastic elastomer TPE, agar and phase change wax are filled in the capsule cavity of the single capsule unit located at the tooth tip, anti-caries drugs and water are filled in the capsule cavity of the single capsule unit, and then a hot laminating machine is used to seal the single capsule unit to obtain a jaw pad with a quadrilateral cross-sectional shape, a three-dimensional tunnel shape, and a height of 10 mm. Figures 12 - 14 As shown, the jaw pad 2 and the orthodontic appliance 1 are welded together by laser welding.

[0107] The prepared occlusal pad has good biting force and can meet the need to open the occlusion. The non-Newtonian fluid or phase change material filled in the single-capsule unit located at the cusp balances the biting force at the cusp. At the same time, it can also slowly release anti-caries drugs to treat or prevent dental caries.

[0108] Example 8

[0109] An occlusal pad mold in a three-dimensional spider-web multi-grid hollow shape is prepared by using a thermoforming mold (as Figure 7 shown). Figure 7 Figure a in Figure 7 is the top view of the occlusal pad mold, and Figure 7 Figure b in Figure 7 is the schematic three-dimensional structure diagram of the occlusal pad mold. The long strip-shaped grids correspond to the respective single-capsule units. As shown in Figure b in

[0110] , the middle part of the long strip-shaped grid is sunken downward to form a middle hollow structure, and this hollow structure corresponds to the sac-like cavity of each single-capsule unit. The number of single-capsule units is 22.

[0111] The prepared occlusal pad has good biting force and can meet the need to open the occlusion. The non-Newtonian fluid or phase change material filled in the single-capsule unit located at the cusp balances the biting force at the cusp. At the same time, it can also slowly release anti-caries drugs to treat or prevent dental caries.

[0112] Example 9

[0113] An occlusal pad mold in a three-dimensional spiral hollow shape is prepared by using a thermoforming mold. The grids correspond to the respective single-capsule units, and the hollow part of the grids is the sac-like cavity of each single-capsule unit. The material of the sac-like shell is thermoplastic elastomer TPE. In the sac-like cavity of the single-capsule unit located at the cusp, agar and phase change wax are filled. In its sac-like cavity of the single-capsule unit, drugs for treating periodontitis and water are filled. Then, it is sealed with a heat bonding machine to obtain an occlusal pad with a circular cross-sectional shape of the single-capsule unit. The shape of the occlusal pad is three-dimensional spiral, and the height of the occlusal pad is 10 mm. The occlusal pad 2 and the orthodontic appliance 1 are welded together by using laser welding.

[0114] The prepared occlusal pad has good biting force and can meet the need to open the occlusion. The non-Newtonian fluid or phase change material filled in the single-capsule unit located at the cusp balances the biting force at the cusp. At the same time, it can also slowly release drugs for treating or relieving periodontitis to maintain oral safety.

[0115] The above embodiments are the preferred embodiments of the invention. However, the embodiments of the invention are not limited by the above examples. Any other changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the invention are equivalent.

Claims

1. A jaw pad, characterized in that, it comprises n single-capsule units, the single-capsule unit comprising a sac-shaped cavity, a sac-shaped outer shell and a filling material filled in the sac-shaped cavity, where n is an integer and n≥2; the n single-capsule units are connected to each other and are not connected to each other.

2. The jaw pad according to claim 1, characterized in that, the heights of the n single-capsule units are of uniform height or non-uniform height, preferably non-uniform height; wherein, the distribution of the non-uniform height preferably shows a gradient height distribution, such as lower in the middle and higher around, or higher in the middle and lower around; and / or, the side of the single-capsule unit in contact with the appliance is adapted to the anatomical shape or planar shape of the tooth bottom surface; and / or, the jaw pad is in contact with the appliance and does not cover the incisor region.

3. The jaw pad according to claim 1, characterized in that, the shape of the jaw pad is a three-dimensional grid shape, a three-dimensional spider web shape, a three-dimensional tunnel shape or a three-dimensional spiral shape; and / or, the cross-sectional shape of the single-capsule unit is a polygon, preferably a triangle, a quadrilateral or a hexagon, such as a quadrilateral.

4. The jaw pad according to claim 1, characterized in that, the height of the jaw pad is 2-10 mm, such as 4 mm, 6 mm or 8 mm; and / or, the wall thickness of the sac-shaped outer shell is 0.05-2 mm, preferably 0.5-0.8 mm; and / or, the thickness-diameter ratio of the sac-shaped outer shell is 1:(0-9).

5. The jaw pad according to claim 1, characterized in that, the jaw pad is fixed to the appliance by means of adhesion, plugging, snap connection, welding or embedding.

6. The jaw pad according to claim 1, characterized in that, the n single-capsule units are filled with the same or different filling materials, preferably different filling materials; and / or, the filling material comprises one or more of a liquid, a gas, a phase change material and a non-Newtonian fluid; wherein, the liquid preferably comprises water and / or a solution containing a functional reagent; the functional reagent in the solution containing a functional reagent preferably comprises 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 essence and / or a rose 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 comprises one or more of air, nitrogen, carbon dioxide and oxygen, such as air; wherein, the phase change material is preferably a phase change wax; wherein, the non-Newtonian fluid preferably comprises one or more of agar, thick sugar water and apple pulp.

7. 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%; and / or, the hardness of the material of the sac-shaped outer shell is 30-95A, preferably 42-85A; and / or, 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%; Preferably, the water absorption rate of the material of the sac-like outer shell is 5%-150%, more preferably 5%-90%, and even more preferably 10%-60%; and / or, the material of the sac-like outer shell is silicone rubber, thermoplastic elastomer or thermoplastic.

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

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

10. The method for preparing a jaw pad according to claim 9, characterized in that the sac-like outer shell is made by injection molding, injection molding, thermoforming or additive manufacturing; and / or, the filling method is injection, pre-burial 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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