阅读说明：本技术 一种矫治器及其制备方法 (Appliance and preparation method thereof ) 是由 周静 张立君 崔意娟 余琼 唐盛明 连危洁 于 2021-08-26 设计创作，主要内容包括：本发明涉及一种矫治器及其制备方法,一种矫治器包括有矫治器主体,所述矫治器主体的上表面具有向下凹陷以供各上牙齿至少局部容置在其中的上凹腔,所述矫治器主体的下表面具有向上凹陷以供各下牙齿至少局部容置在其中的下凹腔,所述矫治器主体包括有定型中间层及包裹在所述定型中间层之外围的缓冲外层,所述定型中间层的硬度大于缓冲外层的硬度,且均由弹性材料制成,其特征在于：所述缓冲外层为一体件,所述定型中间层在朝向所述缓冲外层的表面上开设有透气孔。成本低且具有提高佩戴的舒适度。(The invention relates to an appliance and a preparation method thereof, wherein the appliance comprises an appliance main body, the upper surface of the appliance main body is provided with an upper concave cavity which is downwards concave and is used for at least partially accommodating each upper tooth, the lower surface of the appliance main body is provided with a lower concave cavity which is upwards concave and is used for at least partially accommodating each lower tooth, the appliance main body comprises a sizing intermediate layer and a buffer outer layer wrapping the periphery of the sizing intermediate layer, the hardness of the sizing intermediate layer is greater than that of the buffer outer layer, and the sizing intermediate layer is made of elastic materials, and the appliance is characterized in that: the outer layer of buffering is integrative, the design intermediate level is in the orientation the outer surperficial bleeder vent of having seted up of buffering. Low cost and improved wearing comfort.)

1. The utility model provides an appliance, is including correcting the ware main part, the upper surface of correcting the ware main part has local undercut for each last tooth at least local holding at last cavity wherein, the lower surface of correcting the ware main part has local undercut for each lower tooth at least local holding at the concave cavity wherein, it is in including design intermediate level and parcel to correct the ware main part the outlying buffering in design intermediate level is outer, the hardness in design intermediate level is greater than the outer hardness of buffering, and makes its characterized in that by elastic material: the outer layer of buffering is integrative, the design intermediate level is in the orientation the outer surperficial bleeder vent of having seted up of buffering.

2. The appliance of claim 1, wherein: go up in the cavity all have the last tooth position of undercut in the position department that corresponds each last tooth, the position department that corresponds each lower tooth in the cavity all has the lower tooth position of undercut down, the design intermediate level is in corresponding at least one go up the position department of tooth position and at least one lower tooth position and all seted up the bleeder vent.

3. The appliance of claim 2, wherein: the shaping middle layer and the buffering outer layer have the same structure as the appliance main body.

4. The appliance of claim 1, wherein: the thickness of the shaping middle layer is 0.1-0.5mm, and the thickness of the buffering outer layer is 1-5 mm.

5. The appliance of claim 1, wherein: the shaping middle layer is composed of one or more of photosensitive resin, PP, PETG, PC, PA, TPU or metal Ti.

6. The appliance of claim 5, wherein: the buffer outer layer is composed of one or more of soft elastic materials TPU, TPV, TPE and silicon rubber.

7. A method of making the orthosis of any of claims 1 to 6, comprising the steps of, in order:

step 1) forming an initial tooth body model through film printing and glue biting or oral scanning, then determining an expected tooth position, and then generating a final model of a shaping intermediate layer through an injection or pouring mode or a 3D printing mode;

and 2) forming the elastic material used by the buffer outer layer on the periphery of the final model of the shaping middle layer in an encapsulation injection molding mode or a film pressing forming mode, so that the buffer outer layer is formed on the periphery of the shaping middle layer, and the formed whole is the appliance.

Technical Field

The invention belongs to the technical field of tooth correction, and particularly relates to a child corrector and a preparation method thereof.

Background

At present, the incidence rate of malocclusion in China is as high as 90 percent, namely most children have dental deformities of different degrees. In orthodontic treatment, more and more children choose orthodontic or early intervention treatment. At present, early intervention therapy mainly comprises a movable appliance, a fixed appliance and a functional appliance, wherein the functional appliance mainly comprises an MRC appliance and a Romu appliance in the market, and is a mainstream appliance selected by children in the dental period.

However, the existing functional appliance is generally made of silica gel, and since the property of the silica gel material determines that the existing functional appliance needs to be opened, the existing functional appliance is made in a semi-customized manner in order to save cost, and the correcting effect is seriously influenced; in order to provide enough correction force, the thickness of the correction device needs to be designed to be very thick, so that the phenomenon that the mouth is difficult to completely close after wearing, and the like occurs. In addition, the existing functional appliance has the defects of high cost, poor wearing comfort and the like.

Present correction device as chinese utility model patent a multilayer melt pressure formula silicon rubber early correction device, its patent number is ZL202022409117.9 (the grant bulletin number is CN213465386U) discloses a multilayer melt pressure formula silicon rubber early correction device including correcting the ware body, the structure of correcting the ware body is the U-shaped, is provided with the alveolus on the intermediate position, the alveolus is groove structure for the cover is on the tooth, it is lamellar structure to correct the ware body, from the top down is upper strata, intermediate level and lower floor in proper order, and upper strata, intermediate level and lower floor all adopt silicon rubber, and structural shape and correction ware body unanimity, fixed connection between upper strata and the lower floor, inside vacuole formation for set up the intermediate level, upper strata and lower floor parcel intermediate level together. The appliance body in the patent adopts a three-layer structure, so that the preparation difficulty is increased, and the cost is high because a plurality of dies are required to be arranged due to three layers of silicon rubber materials; in addition, fracture or damaged condition appear easily in upper strata and lower floor fixed connection department, and the reliability is not high and influence life, and silicon rubber product thickness is thicker in addition, can make the user have serious to wear the foreign matter and feel, influences user's the comfortable degree of wearing.

Thus, further improvements to existing dental appliances and methods of making are needed.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide an appliance with excellent wearing comfort and good reliability in view of the current situation of the prior art.

The invention aims to solve the second technical problem of providing a preparation method of the appliance with low cost and good wearing comfort.

The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides an appliance, is including correcting the ware main part, the upper surface of correcting the ware main part has local undercut for each last tooth at least local holding at last cavity wherein, the lower surface of correcting the ware main part has local undercut for each lower tooth at least local holding at the concave cavity wherein, it is in including design intermediate level and parcel to correct the ware main part the outlying buffering in design intermediate level is outer, the hardness in design intermediate level is greater than the outer hardness of buffering, and makes its characterized in that by elastic material: the outer layer of buffering is integrative, the design intermediate level is in the orientation the outer surperficial bleeder vent of having seted up of buffering.

Preferably, the position department that corresponds each upper tooth in the last cavity all has the upper teeth position of undercut, the position department that corresponds each lower tooth in the cavity all has the lower teeth position of undercut down, the design intermediate level all seted up in the position department that corresponds at least one upper teeth position and at least one lower teeth position the bleeder vent. The air holes facilitate smooth air exhaust in the subsequent buffer outer layer forming process, the situation that the buffer outer layer and the shaping middle layer are not tightly combined due to unsmooth air exhaust is prevented, and the wearing comfort level is improved.

Preferably, the sizing intermediate layer and the cushioning outer layer have the same structure as the appliance body.

Preferably, the thickness of the shaping middle layer is 0.1-0.5mm, and the thickness of the buffer outer layer is 1-5 mm. Compared with the existing orthodontic appliance for the children, the sizing middle layer of the orthodontic appliance has the advantages that the sizing middle layer is made of the hard material with excellent elasticity and is small in thickness, and the buffering outer layer with proper thickness is added, so that the thickness of the product can be reduced, the resilience can be improved, and the wearing comfort and the orthodontic performance of the product can be improved.

Preferably, the setting interlayer is composed of one or more of photosensitive resin, PP, PETG, PC, PA, TPU, or metal Ti.

Preferably, the buffer outer layer is composed of one or more of soft elastic materials of TPU, TPV, TPE and silicon rubber.

The technical scheme adopted by the invention for solving the second technical problem is as follows: the preparation method of the appliance is characterized by sequentially comprising the following steps of:

step 1) forming an initial tooth body model through film printing and glue biting or oral scanning, then determining an expected tooth position, and then generating a final model of a shaping intermediate layer through an injection or pouring mode or a 3D printing mode;

and 2) forming the elastic material used by the buffer outer layer on the periphery of the final model of the shaping middle layer in an encapsulation injection molding mode or a film pressing forming mode, so that the buffer outer layer is formed on the periphery of the shaping middle layer, and the formed whole is the appliance. Compared with the existing orthodontic appliance, the preparation method is simple, and particularly, the process for forming the buffer outer layer by 3D printing of the shaping middle layer compression film is simple, a mold is not required to be prepared, and the preparation is simple, so that the manufacturing process cost is greatly reduced.

Compared with the prior art, the invention has the advantages that: the appliance is characterized in that the buffering outer layer is arranged on the periphery of the shaping middle layer and is in an integrated form, namely the appliance main body is in a two-layer structure, so that the cost is low, and the problems that the service life is short due to the fact that the outer layer is easy to damage at a joint and the wearing comfort is reduced due to the fact that the joint is uneven due to the fact that the outer layer is in a split connection in the background technology are solved; in addition, through set up the bleeder vent on the surface in design intermediate level, take shape at the peripheral in-process in design intermediate level at the outer layer of buffering, easily exhaust and make the combination of buffering outer layer and design intermediate level inseparabler, be favorable to further improving the comfort level of wearing.

Drawings

FIG. 1 is a schematic structural view of a shaped interlayer of an embodiment;

FIG. 2 is a schematic structural diagram of the buffer outer layer of the present embodiment;

FIG. 3 is a schematic structural view of the portion of FIG. 2 underlying the shaped middle layer;

FIG. 4 is a schematic structural view of the orthosis;

FIG. 5 is a schematic view of another angle configuration of the orthosis;

FIG. 6 is a cross-sectional view of portion A of FIG. 4;

fig. 7 is a flowchart of a method for manufacturing the appliance of the present embodiment.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

Example 1:

as shown in fig. 1 to 6, the appliance of the present embodiment is mainly used for teeth correction of children, and includes an appliance main body 1, an upper surface of the appliance main body 1 has an upper concave cavity 11 partially recessed downward for receiving a portion of each upper tooth therein, and the upper concave cavity 11 has an upper tooth position 111 recessed downward at a position corresponding to each upper tooth. The lower surface of the appliance main body 1 is provided with a lower concave cavity 12 which is partially concave upwards for each lower tooth to be partially accommodated in, and the lower concave cavity 12 is internally provided with a lower tooth position 121 which is concave upwards at the position corresponding to each lower tooth.

As shown in fig. 6, the appliance main body 1 of the present embodiment integrally adopts a two-layer structure, including a shaping middle layer 1a and a buffer outer layer 1b wrapped around the shaping middle layer 1a, and the structures of the buffer outer layer and the shaping middle layer are the same as the structure of the appliance main body 1, specifically refer to fig. 1, 2, 4 and 5. The outer buffer layer 1b and the shaping intermediate layer 1a are both integrated, the hardness of the shaping intermediate layer 1a is greater than that of the outer buffer layer 1b, the shaping intermediate layer 1a is made of hard elastic materials (such as photosensitive resin), and the outer buffer layer 1b is made of soft elastic materials (such as TPE). Wherein, the thickness of the shaping middle layer 1a is 0.5mm, and the thickness of the buffering outer layer 1b is 5 mm. The buffering outer layer provides buffering force for teeth so as to improve wearing comfort. And the shaping middle layer provides the teeth with correcting force and is matched with the expected tooth position of the teeth. The upper surface and the lower surface of the shaping middle layer 1a are respectively provided with 6 air holes 100, each air hole 100 on the upper surface corresponds to an upper tooth position 111, and each air hole 100 on the lower surface corresponds to a lower tooth position 121. In addition, the positions corresponding to the upper teeth 111 and the lower teeth 121 can be provided with a vent hole 100. In addition, the ventilation holes 100 may be formed in other regions except the upper and lower teeth. Thus, the airing holes 100 are opened on the outer surface of the setting intermediate layer 1a facing the cushion outer layer 1 b.

As shown in fig. 7, the preparation method of the appliance sequentially comprises the following steps:

step 1) preparing a sizing intermediate layer: forming an initial tooth model by film printing and glue biting or oral scanning, then editing and generating a model of a shaping intermediate layer of the expected tooth position determining appliance by image editing software, and determining a hard elastic material and a manufacturing method required by the shaping intermediate layer; in the embodiment, the hard elastic material is printed by photosensitive resin for 3d to form a final model of the shaping intermediate layer 1 a;

and 2) the buffer outer layer 1b is formed on the periphery of the final model of the shaping middle layer 1a through hot pressing by TPE, and the formed integral piece is the appliance. The hot-press forming is obtained by hot-press forming of a film pressing machine, and finally the required product is obtained by trimming.

The chew, the editing and generating of the expected tooth position through the image editing software, the mouth scanning, the 3D printing and the hot press forming in the embodiment are all the prior art, and the details are not repeated in the embodiment.

Example 2:

this embodiment differs from embodiment 1 described above only in that:

1. the thickness of the shaping middle layer is different from that of the buffering outer layer, specifically, the thickness of the shaping middle layer is 0.2mm, and the thickness of the buffering outer layer is 1 mm;

2. the shaping middle layer is formed by PC injection, and the buffering outer layer is formed outside the shaping middle layer by TPU in a rubber coating mode.

Example 3:

this embodiment differs from embodiment 1 described above only in that:

1. the thickness of the buffer outer layer is different, specifically, the thickness of the buffer outer layer is 1 mm;

2. the shaping intermediate layer is made of metal Ti and formed in a 3D printing mode, and the buffering outer layer is made of soft elastic material silicon rubber and formed outside the shaping intermediate layer in a rubber coating mode.

Example 4:

this embodiment differs from embodiment 1 described above only in that:

1. the thickness of the shaping middle layer is different, and specifically, the thickness of the shaping middle layer is 0.2 mm;

2. the shaping middle layer is made of PA and formed in an injection mode, and the buffering outer layer is made of soft elastic material TPU and formed outside the shaping middle layer in an encapsulation mode.

Example 5:

this embodiment differs from embodiment 1 described above only in that:

1. the thickness of the shaping middle layer is different from that of the buffering outer layer, specifically, the thickness of the shaping middle layer is 0.1mm, and the thickness of the buffering outer layer is 2 mm;

2. the shaping middle layer is made of PA and formed in an injection mode, and the buffering outer layer is made of a soft elastic material TPV and formed outside the shaping middle layer in an encapsulation mode.

In addition, the shaping interlayer can also be formed by injection by adopting PP or PETG.

The specific embodiments of the present invention described are merely illustrative. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit of the patent or exceeding the scope of the appended claims.

Directional terms such as "upper", "lower", and the like are used in the description and the claims of the present invention to describe various example structural parts and elements of the present invention, but are used herein for convenience of description only and are to be determined based on example orientations shown in the accompanying drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.