CN-224206908-U - Dental instrument and dental instrument system

Abstract

The utility model discloses a dental instrument and a dental instrument system, wherein the dental instrument comprises a shell-shaped body for pushing and grinding teeth to move far and an auxiliary force application device connected with a shell-shaped body rear tooth area, the auxiliary force application device comprises a vestibular shield and force application rods, the left end and the right end of the vestibular shield are respectively provided with a force application rod, the first end of the force application rods is connected with the vestibular shield, the second end of the force application rods, which is opposite to the first end, is connected with the shell-shaped body rear tooth area, the second end of the force application rods is provided with a first connecting part, the cheek side walls of the shell-shaped body rear tooth areas are respectively provided with a second connecting part, the auxiliary force application device is arranged on the shell-shaped body through the cooperation of the first connecting part and the second connecting part, when the dental instrument is worn, labial muscles corresponding to teeth covered by the vestibular shield are contacted with the labial side surfaces of the vestibular shield, and auxiliary force for pushing auxiliary teeth corresponding to the teeth covered by the vestibular shield to move far is applied to the teeth in the vestibular shield through the force application rods, and the labial muscles corresponding to the teeth covered by the vestibular shield are blocked and are not contacted with the teeth.

Inventors

• ZHAO XIAOLEI
• YAO JUNFENG

Assignees

• 正雅齿科科技(上海)有限公司

Dates

Publication Date

20260508

Application Date

20250331

Claims (20)

1. 1. A dental instrument is characterized by comprising a shell-shaped body for pushing molar teeth to move far and an auxiliary force application device connected with a shell-shaped body rear tooth area, wherein the shell-shaped body is provided with a plurality of tooth accommodating cavities for accommodating maxillary teeth or mandibular teeth, the auxiliary force application device comprises a vestibular shield and force application rods, the left end and the right end of the vestibular shield are respectively provided with a force application rod, the first end of the force application rod is connected with the vestibular shield, the second end of the force application rod, which is opposite to the first end, is connected with the shell-shaped body rear tooth area, the second end of the force application rod is provided with a first connecting part, the cheek side walls of the left and right side rear tooth areas of the shell-shaped body are respectively provided with a second connecting part, the auxiliary force application device is mounted on cheek side walls of the left and right side rear tooth areas of the shell-shaped body through the cooperation of the first connecting part, when the vestibular shield is worn, lips corresponding to teeth are in contact with the vestibular shield side surfaces, the auxiliary force is applied to the vestibular shield through the auxiliary force application rod, and the auxiliary force application device is not in contact with the vestibular shield surfaces, and the teeth are not in contact with the front teeth of the front tooth areas.
2. 2. The dental instrument of claim 1, wherein the force bar on the left and right sides is not in contact with the cheek sides on the left and right sides of the shell body.
3. 3. The dental instrument of claim 1, wherein the applicator rod has a cross-section perpendicular to its length that tapers in area along the first end to the second end.
4. 4. A dental instrument according to claim 3, wherein the width of the force bar in the buccal-lingual direction of a cross section perpendicular to its length direction is gradually reduced and/or the width of the force bar in the gingival-jaw direction of a cross section perpendicular to its length direction is gradually reduced.
5. 5. The dental instrument of claim 1, wherein the thickness of the vestibular shield decreases gradually from the left and right ends toward the middle.
6. 6. The dental instrument of claim 1, wherein the force bar is provided with a first reinforcement along its length that enhances the force bar's resistance to deformation in the push-in tooth direction.
7. 7. The dental instrument of claim 6, wherein the first reinforcement is a first reinforcement ridge disposed along a length of the applicator rod.
8. 8. The dental instrument of claim 6, wherein the first reinforcement is a first internal support structure embedded within the applicator rod disposed along a length of the applicator rod.
9. 9. The dental instrument of claim 1, wherein the force bar has a material modulus of elasticity that is greater than a material modulus of elasticity of the vestibular shield and/or a thickness that is greater than a thickness of the vestibular shield.
10. 10. A dental instrument according to any of claims 1-9, wherein the vestibular shield is provided with a second reinforcement in the mesial-distal direction which enhances the deformation resistance of the vestibular shield in the opposite direction of the push teeth.
11. 11. The dental instrument of claim 10, wherein the second reinforcement is a second reinforcement ridge disposed in a mesial-distal direction of the vestibular shield.
12. 12. The dental instrument of claim 10, wherein the second reinforcement is a second internal support structure embedded within the vestibular shield disposed in a mesial-distal direction of the vestibular shield.
13. 13. The dental instrument of claim 1, wherein the force applying rod comprises a force releasing portion and a straight rod portion connected to both ends of the force releasing portion, respectively.
14. 14. The dental instrument of claim 13, wherein the force-modifying portion comprises an orthodontic spring curve.
15. 15. The dental instrument of claim 1, wherein the first connection portion is a rod-like structure and the second connection portion is a sleeve-like structure, and wherein the inner contour shape of the sleeve-like structure matches the outer contour shape of the rod-like structure, and wherein the rod-like structure and the sleeve-like structure are connected by a plug-in connection.
16. 16. The dental instrument of claim 15, wherein the first connection portion includes a guide portion and a guide portion disposed adjacent to the guide portion, the second connection portion includes a guide channel and a guide portion receiving cavity disposed adjacent to the guide channel, the auxiliary force application device is detachably mounted on the shell-like body by mating the first connection portion and the second connection portion, wherein the guide portion is compressed under the guide of the guide channel and enters the guide portion receiving cavity after passing through the guide channel when the first connection portion is inserted into the second connection portion, the guide portion returns to its original shape in the guide portion receiving cavity, the guide portion is positioned in the guide channel to restrict the guide portion in the guide portion receiving cavity, and the guide portion is compressed under the guide of the guide channel and is reversely deformed through the guide channel and exits the second connection portion after the first connection portion is pulled out of the second connection portion.
17. 17. The dental instrument of claim 16, wherein the guide portion includes a first guide surface disposed obliquely for guiding insertion of the guide portion into the guide channel, and a second guide surface disposed obliquely for guiding removal of the guide portion from the guide channel, and a slow release slot for providing a slow release space for compression of the guide portion upon insertion or removal of the guide portion from the guide channel.
18. 18. The dental instrument of claim 1, wherein the second connection portion may be integrally formed on the posterior buccal side of the shell body, or the second connection portion and the shell body may be a separate structure and attached to the posterior buccal side of the shell body by bonding or welding.
19. 19. The dental instrument of any one of claims 1 to 9 or 13-18, wherein the applicator rod is of unitary construction with the vestibular shield.
20. 20. A dental instrument as claimed in any one of claims 1 to 9 or 13 to 18, wherein a pocket structure is provided at both left and right ends of the vestibular shield toward the posterior region, a connecting section is provided at one end of the force applying rod near the vestibular shield, an inner contour shape of the pocket structure is matched with an outer contour shape of the connecting section, and the connecting section is inserted into the pocket structure so that the force applying rod is mounted on the vestibular shield.

Description

Dental instrument and dental instrument system Technical Field The present utility model relates to the field of medical devices, and more particularly to the field of oral appliances, and more particularly to a dental device and dental device system. Background In the field of orthodontic treatment, aiming at early malocclusion of the growth and development stage of children, dental arch stenosis, tooth crowding and the like are often caused, and in clinic, the remote movement of molar teeth is usually considered to avoid tooth extraction or reduce the tooth extraction quantity. In the existing push-grind tooth remote therapy, anchorage control is usually needed, namely, the group tooth anchorage, or the planting anchorage or the extraoral arch is used as the anchorage, and the planting anchorage or the extraoral arch anchorage has better anchorage effect. However, the two types of the anchorage respectively have the following problems that (1) the implant anchorage has a wound risk, an implant body and a tension spring part are needed to be additionally arranged when the implant anchorage is used, food residues are easy to accumulate at the connecting part of the implant body and the tension spring, if the implant body is improperly cleaned, the periphery of the implant body can be inflamed due to poor oral hygiene for a long time, and the implant body is fallen off. (2) The external arch is used as an anchorage, such as a split external arch disclosed in a Chinese patent with a patent number of CN202322276940.0, but the external arch is large in size, the installation of the external arch is required to be completed by a clinician, an infant cannot complete the installation by himself, in addition, the external arch part outside the mouth is positioned outside the mouth, the external image of the infant is influenced by means of a head cap, in addition, the child is lively and active, in daily life, the external arch and the head cap outside the mouth are easy to hook foreign matters, and danger is brought to the infant. The infant is easy to generate conflicted emotion when wearing, thereby influencing the correction period and effect of the infant. In addition, in some studies, it has been shown that muscles have a critical effect on stability after orthodontic treatment at a developmental stage, and in some cases, muscle problems are causative factors of oral problems, and neglecting muscle problems may cause difficulty in correction or recurrence after treatment, so in orthodontic treatment of children, it is also common to consider blocking the effect of muscles on teeth by using the vestibular shield or the buccal shield. At present, no matter the vestibular shield or the cheek shield is used for blocking teeth, or the pushing and grinding tooth remote moving device is used for remote grinding teeth, the two teeth can not be simultaneously carried out, so that the whole correction period of the children orthodontic is longer, the compliance of the children is generally poorer, and the final correction effect is not obvious. Disclosure of utility model The utility model solves the technical problems of overcoming the defects in the prior art, and provides a dental instrument and a dental instrument system, which can integrate the vestibular shield and the push and grind tooth remote movement function and can utilize the high-efficiency children correction device of the labial muscle anchorage, so that the vestibular shield is utilized to block the labial muscle, and meanwhile, the accurate force application of a shell-shaped body and the natural pressure of the labial muscle are combined, and the dependence on the external anchorage during the push and grind tooth remote movement is reduced. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: The dental appliance comprises a shell-shaped body for pushing and grinding teeth to move far and an auxiliary force application device connected with a shell-shaped body rear tooth area, wherein the shell-shaped body is provided with a plurality of tooth accommodating cavities for accommodating maxillary teeth or mandibular teeth, the auxiliary force application device comprises a vestibular shield and force application rods, the left end and the right end of the vestibular shield are respectively provided with a force application rod, the first end of the force application rods is connected with the vestibular shield, the second end of the force application rods, which is opposite to the first end, is connected with the shell-shaped body rear tooth area, the second end of the force application rods is provided with a first connecting part, the cheek side walls of the back tooth areas on the left side and the right side of the shell-shaped body are respectively provided with a second connecting part, the auxiliary force application device is mounted on the cheek side walls of the back tooth areas on the left