CN-224206906-U - Dental instrument

CN224206906UCN 224206906 UCN224206906 UCN 224206906UCN-224206906-U

Abstract

The utility model discloses a dental instrument, which comprises a shell-shaped body and a jaw bar, wherein the jaw bar is used for being matched with a rear tooth area of a patient, the jaw bar comprises two retention crowns used for being matched with teeth of the rear tooth area on the left side and the right side and a plurality of jaw connecting rods connected between the two retention crowns, the inner contours of the retention crowns on the left side and the right side are matched with the outer contours of the teeth at corresponding positions of the patient, a composite module is formed after the teeth of the rear tooth area are matched with the retention crowns, the shell-shaped body comprises a first section and a second section, the first section accommodates other teeth except the teeth matched with the composite module, the inner contour shape of a second section accommodating cavity is consistent with the outer contour shape of the composite module, the cheek side and/or the tongue side of the retention crowns are provided with retention accessories, and the position of the second section corresponding to the retention accessories is provided with a matching part matched with the retention accessories.

Inventors

WANG XINGXING
CHEN JING
ZHUANG HUIMIN
Ding Xingdou
YAO JUNFENG

Assignees

正雅齿科科技(上海)有限公司
西安顾隐技术服务有限公司

Dates

Publication Date: 20260508
Application Date: 20250430

Claims (10)

1. A dental appliance is characterized by comprising a shell-shaped body and a palate bar, wherein the palate bar is used for being matched with a rear tooth area of a patient and comprises two retention crowns used for being matched with the rear tooth area of the left side and the right side, a plurality of palate connecting rods connected between the two retention crowns, the inner contours of the retention crowns on the left side and the right side are matched with the outer contours of teeth at corresponding positions of the patient, a composite module is formed after the rear tooth area teeth are matched with the retention crowns, the shell-shaped body comprises a first section and a second section, the first section is used for accommodating other teeth except the teeth matched with the composite module, the inner contour shape of the second section is matched with the outer contour shape of the composite module, and the cheek side and/or the tongue side of the retention crowns are provided with retention accessories, and the position of the second section corresponding to the retention accessories is provided with a matching part matched with the retention accessories.
2. The dental instrument of claim 1, wherein the retention crown comprises at least one clasp that wraps around a side of a tooth, wherein the clasp wraps around at least one of the posterior 1-4 teeth.
3. The dental instrument of claim 2, wherein the retention crown further comprises an bite portion at least partially surrounding the occlusal surface of the tooth, the bite portion having a shape conforming to the shape of the occlusal surface of the wrapped tooth.
4. A dental instrument according to claim 3, wherein the bite is provided with a through hole at the corresponding tooth tip through which the tip passes.
5. The dental instrument of claim 1, wherein the surface of the retention attachment on the gingival side is curved concave inward in a direction away from the gingiva.
6. The dental instrument of claim 1, wherein the retention crown is further provided with a functional attachment on the buccal and/or lingual side, and wherein the second segment is provided with a relief structure or a through hole structure at a location corresponding to the functional attachment, wherein the functional attachment is one of a traction device, a bracket, a buccal tube or a cannula.
7. The dental instrument of claim 1, wherein when there are a plurality of the palate connecting rods, the plurality of palate connecting rods are arranged in parallel, and/or the distances between two adjacent palate connecting rods are equal.
8. The dental instrument of claim 1, wherein the two ends of the palate connecting rod are respectively connected to lingual sides of the retention crowns on the left and right sides, the palate connecting rod is integrally arranged in an arch shape toward the palate direction, the palate connecting rod is arranged in a gap in a vertical direction toward one side of the palate and the palate of the patient, and the gap ranges from more than 0mm to less than or equal to 10mm.
9. The dental appliance of claim 1, wherein the palate connecting rod is provided with a first traction hook for hooking a traction member, and wherein the lingual side of the anterior tooth area of the first section is provided with a second traction hook, and wherein the traction member is hooked on the first traction hook and the second traction hook to apply traction to the anterior tooth area.
10. The dental instrument of claim 1, wherein the palate bar is manufactured by casting or 3D printing processes, the retention accessory is an integral structure with the retention crown, and/or the retention crown is an integral structure with the palate connecting rod.

Description

Dental instrument Technical Field The present utility model relates to the field of medical devices, more precisely to the field of oral appliances, and in particular to a dental device. Background In the field of orthodontic treatment, the invisible appliance is attractive and comfortable, but the invisible appliance still has some defects and short plates, and in the cases of tooth extraction, the correction effect is poor due to insufficient anchorage in the scenes of adduction of front teeth, inclination control of rear teeth shafts, closing of tooth extraction residual gaps and the like. In the prior art, some orthodontic technicians have considered the introduction of a combination of fixed and invisible appliances to address this problem. In Chinese patent application No. CN202021059242.5, a technical scheme for strengthening the posterior tooth anchorage by combining invisible correction and fixed correction is disclosed. According to the technical scheme, auxiliary correction devices are stuck on the surfaces of a plurality of teeth in the rear tooth area, and fastening archwires are inserted into the auxiliary correction devices, so that the rear tooth area is integrated. Although the technical scheme can strengthen the posterior tooth anchorage to a certain extent, the technical scheme still has the problems that (1) a plurality of auxiliary correction devices are required to be respectively stuck on the surfaces of a plurality of teeth in a posterior tooth area, an arch wire for fastening is required to be inserted into the teeth, the operation is time-consuming and labor-consuming in a narrow oral cavity space, especially for a patient with a short dental crown, the risk of infirm sticking and even sticking failure due to the small surface area of the teeth can exist, and (2) the technical scheme still can only respectively take the teeth in the posterior tooth areas on the left side and the right side as two parts of the anchorage, can not further bind the teeth in the posterior tooth areas on the left side and the right side into a stronger anchorage, and when the two sides are respectively taken as the anchorage, the need of correction is still not met, other anchorage is required. Disclosure of utility model The utility model solves the technical problem of overcoming the defects existing in the prior art and providing the dental instrument which has reasonable structure, enhanced posterior tooth anchorage and good retention. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: A dental instrument comprises a shell-shaped body and a palate bar used for being matched with a rear tooth area of a patient, wherein the palate bar comprises two retention crowns used for being matched with the rear tooth area of the left and right sides and a plurality of palate connecting rods connected between the two retention crowns, the inner contours of the retention crowns on the left and right sides are matched with the outer contours of teeth at corresponding positions of the patient, a composite module is formed after the rear tooth area teeth are matched with the retention crowns, the shell-shaped body comprises a first section and a second section, the first section is used for accommodating other teeth except the teeth matched with the composite module, the inner contour shape of a cavity is matched with the outer contour shape of the composite module, and the cheek side and/or the tongue side of the retention crowns are provided with retention accessories, and the position of the second section corresponding to the retention accessories is provided with a matching part matched with the retention accessories. According to the dental appliance, the inner contours of the retention crowns on the left side and the right side are matched with the outer contours of teeth at the corresponding positions of a patient, so that the retention crowns are tightly attached to the teeth of the patient, the stability and retention effect of the composite module are ensured, and for patients with short crowns, the risk of connection failure does not exist. And the teeth of the rear tooth areas matched and connected by the retention connecting crowns on the left side and the right side are connected into a whole through the palate bar to form a whole rear tooth anchorage, so that the anchorage function is obviously enhanced. In addition, the concave-convex matching of the matching part and the retention accessory can enhance the retention effect of the shell-shaped body and avoid the falling risk. Finally, the jaw bar structure integrates the functions of supporting reinforcement and retention, and can realize the complete installation of the retention accessory and the supporting binding device only by once installation, and the installation is simple and convenient. Preferably, the retention crown comprises at least one clasp wrapping around the sides of the teeth, wh