Preformed extraoral bow

Abstract

The utility model belongs to the field of tooth jaw correction, and particularly relates to a preformed extraoral arch. The preformed mouth outer bow is used for being combined with a silica gel appliance and comprises an outer bow body, a first connecting arm, a positioning pin and a stopping device, the first connecting arm, the positioning pin and the stopping device are sequentially connected with the outer bow body, one end of the first connecting arm is connected with the outer bow body, and the other end of the first connecting arm is connected with the positioning pin which can be inserted into an air outlet hole of the silica gel appliance. And the stopping device is in limiting fit with the air outlet hole of the silica gel appliance to connect the preformed mouth outer arch with the silica gel appliance. According to the application, the preformed extra-oral bow is combined with the silica gel appliance for use, and the original complex inner bow bending is replaced with the silica gel appliance for use, so that on one hand, the use process of the original extra-oral bow is simplified, and the requirements on clinical experience and operational ability of doctors are reduced; and on the other hand, the preformed external oral arch is matched with a silica gel appliance for use, so that the acting force can be averagely dispersed to the dental arch, the acting force can be softer, and the preformed external oral arch is more friendly to the experience feeling and comfort of a patient.

Description

Technical Field

[0001] The present application belongs to the field of tooth and jaw orthopedics, and specifically relates to a prefabricated extraoral arch. Background Art

[0002] Traditional extraoral arches can be transmitted to the maxillary bone through the first permanent molars, thereby inhibiting the growth of the maxillary bone. For patients with maxillary protrusion during the growth and development period, the use of head caps and extraoral arches can change the bone deposition pattern of the maxillary suture, thereby reducing the forward and downward growth of the maxillary bone, which has been proven by many research results.

[0003] In actual clinical use, the traditional extraoral bow needs to be clinically bent and inserted into the buccal tube that has been fixed in advance by the patient's teeth (generally fixed at the sixth molar). The specific bending process includes marking the inner bow, adjusting the angle of the inner bow on the dental mold, and then bending it into a U-shaped curve. In the process of bending the inner bow, the doctor needs to have a lot of clinical experience and hands-on ability. Only experienced and hands-on doctors can bend and use it. In addition, the bent extraoral bow must be connected to the buccal tube in the patient's mouth, and then pulled backward and upward with the head cap and rubber band to achieve the effect of inhibiting jaw growth.

[0004] Therefore, there is an urgent need for a prefabricated extraoral arch that simplifies the original complex internal arch bending process. Utility Model Content

[0005] The purpose of the present application is to provide a preformed external arch which simplifies the bending of the original complex internal arch.

[0006] The embodiments of the present application can be implemented through the following technical solutions:

[0007] A preformed external oral arch for use in combination with a silicone appliance, comprising an external arch and a first connecting arm, a positioning pin and a stop device connected in sequence to the external arch, wherein one end of the first connecting arm is connected to the external arch, and the other end is connected to the positioning pin, the positioning pin can be inserted into an air outlet of the silicone appliance, and the stop device cooperates with the air outlet of the silicone appliance to connect the preformed external oral arch to the silicone appliance;

[0008] The number of the first connecting arms and the positioning pins is no more than the number of the air outlet holes of the silicone corrector.

[0009] Optionally, the number of the first connecting arm and the number of the positioning pin are both 1.

[0010] Optionally, there are multiple first connecting arms and multiple positioning pins, and the first connecting arms and the positioning pins correspond one to one.

[0011] Further, the stop device includes a first stop portion, the first stop portion is connected to an end of the positioning pin away from the outer arch, the outer diameter of the first stop portion is greater than the inner diameter of the air outlet, and the first stop portion is in contact with the tongue stop of the silicone appliance on a side facing the outer arch;

[0012] The number of the first stop portions is at least one and is no more than the number of the positioning pins.

[0013] Preferably, the stop device further comprises a second stop portion, the second stop portion is connected to one end of the positioning pin close to the outer arch, the outer diameter of the second stop portion is greater than the inner diameter of the air outlet, and the side of the second stop portion facing away from the outer arch abuts against the lip stop of the silicone appliance;

[0014] The length of the positioning pin matches the length of the air outlet hole.

[0015] Optionally, the number of the second stop portion is 1.

[0016] Optionally, the number of the second stop portions is plural and is no more than the number of the positioning pins.

[0017] Preferably, it further comprises a second connecting arm, wherein the second connecting arm is connected between the second stop portions.

[0018] Preferably, the second connecting arm is an arc-shaped structure, the curvature of which is consistent with the curvature of the lip stopper of the silicone appliance, and the side thereof facing away from the outer arch abuts against the lip stopper.

[0019] Preferably, it further comprises a third connecting arm, wherein the third connecting arm is connected to an end of the first connecting arm close to the outer bow, and the first connecting arm is connected to the outer bow through the third connecting arm.

[0020] The prefabricated external oral arch provided by the embodiment of the present application has at least the following beneficial effects:

[0021] The present application uses a prefabricated extraoral arch in combination with a silicone appliance, replacing the original complex inner arch bending with a silicone appliance for use. On the one hand, the use process of the original extraoral arch is simplified, and the requirements for the doctor's clinical experience and hands-on ability are reduced; on the other hand, the prefabricated extraoral arch used in combination with the silicone appliance can evenly disperse the force to the dental arch and make the force softer, which is more user-friendly and comfortable for the patient.

[0022] The preformed external bow in the present application includes an external bow and a first connecting arm, a positioning pin and a stop device connected to the external bow in sequence. One end of the first connecting arm is connected to the external bow, and the other end is connected to the positioning pin. The positioning pin can be inserted into the air outlet of the silicone appliance. The stop device cooperates with the air outlet of the silicone appliance to connect the preformed external bow to the silicone appliance. The stop device can ensure the stability of the connection between the preformed external bow and the silicone appliance, and prevent the preformed external bow from falling off from the air outlet of the silicone appliance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an overall structural diagram of a prefabricated external oral arch connected to a silicone appliance in the present application;

[0024] Figure 2 This is another overall structural diagram of a preformed external oral arch connected to a silicone appliance in the present application at another angle;

[0025] Figure 3 An exploded view of a prefabricated extraoral arch connected to a silicone appliance in the present application;

[0026] Figure 4 A side view of a preformed external oral arch connected to a silicone appliance in the present application;

[0027] Figure 5 for Figure 4 Sectional view along AA direction;

[0028] Figure 6 A stereoscopic diagram of a prefabricated extraoral arch in the present application.

[0029] Figure numerals: 0, silicone appliance, 1, external bow, 2, first connecting arm, 3, positioning pin, 41, first stop portion, 42, second stop portion, 5, second connecting arm, 6, third connecting arm. DETAILED DESCRIPTION

[0030] Hereinafter, the present application will be further described based on preferred embodiments with reference to the accompanying drawings.

[0031] The vocabulary in this specification is used to illustrate the embodiments of the present application, but is not intended to limit the present application. Unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or a communication between the two components. For those skilled in the art, the specific meanings of the above terms in this application can be specifically understood.

[0032] In addition, in the description of the embodiments of the present application, various components on the drawings are enlarged or reduced in size for ease of understanding, but this practice is not intended to limit the scope of protection of the present application.

[0033] The present application provides a prefabricated extraoral bow, which is used in conjunction with a silicone appliance 0. The original complex inner bow bending is replaced by the one used in conjunction with the silicone appliance 0. On the one hand, the use process of the original extraoral bow is simplified and the requirements for the doctor's clinical experience and hands-on ability are reduced. On the other hand, the prefabricated extraoral bow is used in conjunction with the silicone appliance 0, which can not only evenly disperse the force to the dental arch, but also make the force softer, which is more friendly to the patient's experience and comfort.

[0034] Furthermore, in order to clearly describe the matching relationship between the various structures of the prefabricated extraoral arch and the silicone appliance 0, the specific structure of the silicone appliance 0 is first introduced. Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the silicone braces 0 includes a U-shaped pad, the outer edges of which extend upward and downward to form lip stops, and the inner edges of which extend upward and downward to form tongue stops. The pads, lip stops, and tongue stops together form an upper and lower integrated silicone braces adapted to tooth occlusion. In addition, at least one air outlet penetrating the lip stop and the tongue stop is provided from the lip stop to the tongue stop for ventilation of the patient.

[0035] Further, Figure 1-Figure 5 The overall structure diagram, exploded diagram, side view and cross-sectional view of the preformed external oral arch connected to the silicone appliance 0 in the present application are shown respectively. Figure 1-Figure 5 As shown, the preformed external oral bow includes an external bow 1 and a first connecting arm 2, a positioning pin 3 and a stop device which are connected to the external bow 1 in sequence. One end of the first connecting arm 2 is connected to the external bow 1, and the other end is connected to the positioning pin 3. The positioning pin 3 can be inserted into the air outlet of the silicone brace 0. The stop device cooperates with the air outlet of the silicone brace 0 to connect the preformed external oral bow to the silicone brace 0. The stop device can ensure the stability of the connection between the preformed external oral bow and the silicone brace 0, and prevent the preformed external oral bow from falling off from the air outlet of the silicone brace 0 at will.

[0036] Furthermore, the number of the first connecting arms 2 and the positioning pins 3 is not more than the number of the air outlet holes of the silicone orthodontic appliance 0, that is, the number of the first connecting arms 2 and the positioning pins 3 can at most be equal to the number of the air outlet holes.

[0037] Embodiment 1

[0038] In some specific embodiments of the present application, the number of the first connecting arm 2 and the number of the positioning pin 3 are both one, that is, the first connecting arm 2 and the positioning pin 3 are only matched and connected with one of the air outlet holes.

[0039] Furthermore, the stop device includes a first stop portion 41, which is connected to the end of the positioning pin 3 away from the external bow 1. The outer diameter of the first stop portion 41 is larger than the inner diameter of the air outlet. The first stop portion 41 abuts against the lip stop of the silicone appliance 0 on the side facing the external bow 1 to achieve the limiting of the pre-formed external bow and the silicone appliance 0, and prevent the pre-formed external bow from falling off randomly in the direction away from the silicone appliance 0.

[0040] Further, the number of the first stop portion 41 is at least one and not more than the number of the positioning pins 3, that is, the first stop portion 41 can be provided on at least one of the positioning pins 3, some of the positioning pins 3 may not be provided with the first stop portion 41, and of course, each positioning pin 3 may be provided with the first stop portion 41. In this embodiment, the number of the first stop portion 41 is one.

[0041] It is conceivable that the first stop portion 41 can be a regular structure such as a strip structure, a plate structure, a spherical structure, or an irregular structure. No matter what structure the first stop portion 41 is, as long as it can achieve the function of limiting. It is conceivable that the first stop portion 41 can also achieve a stable connection with the air outlet by means of interference fit with the air outlet.

[0042] In some specific embodiments of the present application, the first stop portion 41 is a spherical structure with a diameter of 0.5 mm to 3.0 mm.

[0043] In some preferred embodiments of the present application, the stop device also includes a second stop portion 42, which is connected to one end of the positioning pin 3 close to the external bow 1, and the outer diameter of the second stop portion 42 is larger than the inner diameter of the air outlet, and the side of the second stop portion 42 facing away from the external bow 1 abuts against the lip stop of the silicone brace 0, and the first stop portion 41 and the second stop portion 42 can respectively realize the matching connection between the pre-formed external bow and the silicone brace 0 from both sides of the lip stop and the tongue stop, so as to further ensure the stability of the connection between the pre-formed external bow and the silicone brace 0.

[0044] Furthermore, to ensure the limiting effect of the stop device, the length of the positioning pin 3 matches the length of the air outlet, which can ensure that the first stop portion 41 and the second stop portion 42 can be exactly located at the axial ends of the air outlet.

[0045] In this embodiment, the number of the second stopping portion 42 is one.

[0046] It is conceivable that the second stop portion 42 can be a regular structure such as a strip structure, a plate structure, a spherical structure, or an irregular structure. No matter what structure the second stop portion 42 is, as long as it can achieve the function of limiting. It is conceivable that the second stop portion 42 can also achieve a stable connection with the air outlet by means of interference fit with the air outlet.

[0047] In some specific embodiments of the present application, the second stop portion 42 is a plate-shaped structure, which can increase the contact area with the lip stopper.

[0048] In some specific embodiments of the present application, the length of the positioning pin 3 is 0.5 cm to 3 cm.

[0049] In some specific embodiments of the present application, the length of the first connecting arm 2 is 0 to 3 cm.

[0050] Specifically, the outer bow 1 is symmetrically structured and has a smooth arc-shaped structure, the arc of which matches the human face. The outer bow 1 is bent inward on the side away from the silicone appliance 0 to form a traction hook, which can be cooperated with a rubber band. One end of the rubber band can be put on the traction hook, and the other end can be connected to the head cap.

[0051] Embodiment 2

[0052] The difference between the second embodiment and the first embodiment is that: in this embodiment, there are multiple first connecting arms 2 and multiple positioning pins 3, and the first connecting arms 2 correspond to the positioning pins 3 one by one.

[0053] In some specific embodiments of the present application, Figure 6 As shown, the number of the first connecting arm 2 and the positioning pin 3 is two.

[0054] In some preferred embodiments of the present application, Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, in order to achieve a stable connection between the first connecting arm 2 and the outer bow 1, the preformed outer bow also includes a third connecting arm 6, which is connected to one end of the first connecting arm 2 close to the outer bow 1, and the first connecting arm 2 is connected to the outer bow 1 through the third connecting arm 6.

[0055] Furthermore, one or more first stop portions 41 may be provided according to requirements.

[0056] Furthermore, the number of the second stop portions 42 may be one or more, but not more than the number of the positioning pins 3, that is, the second stop portion 42 may be provided on each positioning pin 3, or the second stop portion 42 may be provided on only one or more of the positioning pins 3, while some of the positioning pins 3 may not be provided with the second stop portion 42.

[0057] In some preferred embodiments of the present application, Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6As shown, in order to achieve a stable connection of multiple second stop portions 42 , the preformed external arch further includes a second connecting arm 5 , which is connected between the second stop portions 42 .

[0058] It is conceivable that the second connecting arm 5 can be a regular structure such as a strip structure, a plate structure, a spherical structure, or an irregular structure. No matter what structure the second connecting arm 5 is, as long as it can achieve the limiting function.

[0059] In some preferred implementations of the present application, Figure 6 As shown, the second connecting arm 5 is two parallel strip structures, which can ensure ventilation of at least one air outlet while connecting the second stop portion 42 .

[0060] In some preferred embodiments of the present application, Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the second connecting arm 5 is an arc-shaped structure, and its curvature is consistent with that of the lip guard of the silicone appliance. The side facing away from the outer arch 1 abuts against the lip guard to achieve a perfect fit with the lip guard to prevent scratching the patient's mouth.

[0061] The above is a detailed introduction to the specific implementation methods of the present application. For those skilled in the art, several improvements and modifications may be made to the present application without departing from the principles of the present application. These improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A prefabricated extraoral arch, characterized in that: Used in conjunction with a silicone appliance, comprising an external arch and a first connecting arm, a positioning pin and a stop device connected in sequence to the external arch, wherein one end of the first connecting arm is connected to the external arch, and the other end is connected to the positioning pin, the positioning pin can be inserted into the air outlet of the silicone appliance, and the stop device cooperates with the air outlet of the silicone appliance to connect the preformed external arch to the silicone appliance; The number of the first connecting arms and the positioning pins is no more than the number of the air outlet holes of the silicone corrector.

2. The prefabricated external oral arch according to claim 1, characterized in that: The number of the first connecting arm and the number of the positioning pin are both one.

3. The prefabricated external oral arch according to claim 1, characterized in that: There are multiple first connecting arms and multiple positioning pins, and the first connecting arms and the positioning pins correspond to each other one by one.

4. The prefabricated external oral arch according to claim 1, characterized in that: The stop device comprises a first stop portion, the first stop portion is connected to an end of the positioning pin away from the outer arch, the outer diameter of the first stop portion is greater than the inner diameter of the air outlet, and the first stop portion is in contact with the tongue stop of the silicone appliance on a side facing the outer arch; The number of the first stop portions is at least one and is no more than the number of the positioning pins.

5. The prefabricated extraoral arch according to claim 4, characterized in that: The stop device further includes a second stop portion, which is connected to an end of the positioning pin close to the outer arch, the outer diameter of the second stop portion is larger than the inner diameter of the air outlet, and the side of the second stop portion facing away from the outer arch abuts against the lip stop of the silicone appliance; The length of the positioning pin matches the length of the air outlet hole.

6. The prefabricated external oral arch according to claim 5, characterized in that: The number of the second stopper is one.

7. The prefabricated external oral arch according to claim 5, characterized in that: The number of the second stop portions is plural and is no more than the number of the positioning pins.

8. The prefabricated external oral arch according to claim 7, characterized in that: It also includes a second connecting arm, wherein the second connecting arm is connected between the second stop portions.

9. The prefabricated external oral arch according to claim 8, characterized in that: The second connecting arm is an arc-shaped structure, the curvature of which is consistent with the curvature of the lip stopper of the silicone corrector, and the side of the second connecting arm facing away from the outer arch abuts against the lip stopper.

10. The prefabricated external oral arch according to claim 3, characterized in that: It also includes a third connecting arm, which is connected to one end of the first connecting arm close to the outer bow, and the first connecting arm is connected to the outer bow through the third connecting arm.

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