CN114191123A

CN114191123A - Steady positioning transfer clamp, bracket mounting method and bracket transfer guide plate

Info

Publication number: CN114191123A
Application number: CN202111508158.6A
Authority: CN
Inventors: 陶刚强; 王犇; 陶明华
Original assignee: Hangzhou Youyi Shuchi Technology Co ltd
Current assignee: Hangzhou Youyi Shuchi Technology Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-03-18
Anticipated expiration: 2041-12-10
Also published as: CN114191123B

Abstract

The application discloses a stably positioned transfer clip, a bracket mounting method and a bracket transfer guide plate, wherein the stably positioned transfer clip is used for positioning a bracket on the surface of a tooth and comprises a base which is used for being connected with an occlusal block; a positioning plate extending from the base and disposed toward the tooth surface; the clamping arms extend from the positioning plate towards the surface of the tooth, anti-falling hooks are arranged at the tail ends of the clamping arms far away from the surface of the tooth, and the anti-falling hooks of the clamping arms in the same group are arranged oppositely; the base, the positioning plate and the clamping arm surround to form a clamping space for restraining the bracket. This application improves the cooperation effect with holding in the palm the groove through the configuration optimization that shifts and press from both sides, and the assembly is simple, and the location is stable.

Description

Steady positioning transfer clamp, bracket mounting method and bracket transfer guide plate

Technical Field

The present application relates to the field of orthodontics, and more particularly to a securely positioned transfer clip, bracket installation method, and bracket transfer guide.

Background

In the process of orthodontic treatment of teeth, orthodontic brackets are fixed on the surfaces of teeth, an arch wire penetrates through an arch wire groove (also called a square wire groove) on the brackets, the arch wire is directly ligated into the arch wire groove of the brackets through ligating rubber rings or ligating wire steel wires, and the straightening force of the arch wire is transmitted to the teeth through the brackets, so that the teeth generate expected movement, and the aim of straightening the teeth is fulfilled. The bracket has strict requirements as to the attachment position on the tooth, since this is an important factor affecting the orthodontic effect. Traditional orthodontic bracket bonds, it is manual according to doctor's clinical experience to carry out the maintenance basically to direction, the angle of bracket maintenance can not accurate location, and the operation is complicated, consumes a large amount of clinical times of seeing a doctor of clinician simultaneously, and the patient is for cooperating the doctor operation moreover, can keep opening a mouthful state for a long time, leads to the patient to be tired easily. And traditional support groove bonding relies on doctor's experience, appears judging the error easily or support the groove condition of coming off, and the groove just needs to bond again this moment, and patient's tooth face also can produce certain adhesive and remain. And when the bracket is bonded, the usage amount of the bonding agent is also completed by the bonding experience of a doctor, if the doctor corrects the bracket position on the surface of the tooth of the patient, too much bonding agent is generated on the surface of the tooth of the patient, the clinician needs to spend time and energy to remove the excessive bonding agent, the processing process is time-consuming and complicated, and the requirement on the clinical operation skill of the doctor is extremely high.

Accordingly, bracket transfer guides (i.e., orthodontic bracket transfer adhesive retainers) have been introduced to the market to overcome the above-mentioned problems. The common pressure membrane type, the wax mode, integrative posture, 3D printing guide formula, 3D printing transfer formula etc. form of bracket transfer baffle are generally including being used for with the bite-block board of patient's oral cavity internal tissue cooperation location with set up the transfer on the bite-block and press from both sides, transfer the clamp and be used for fixing a position the bracket to the needs that preset space gesture was in order to satisfy bracket location. With the development of the technology, the conventional bracket transfer guide plate is mostly manufactured by 3D printing of photosensitive resin.

The inventor finds that most photosensitive resins still retain certain elasticity after the conventional light curing process is finished, and the bracket transfer guide plate after the bracket assembly is finished can be hardened along with time to cause structural failure of deformation caused by partial interference fit, particularly a transfer clamp part, and the problem causes the retention effect of the bracket body to be deteriorated, and further causes the bonding position to deviate from a preset position, thereby influencing the final treatment effect.

Disclosure of Invention

To address the above-described problems, the present application discloses a securely positioned transfer clip for positioning a bracket onto a tooth surface, comprising

A base for connection with the bite block;

a positioning plate extending from the base and disposed toward the tooth surface;

the clamping arms extend from the positioning plate towards the surface of the tooth, anti-falling hooks are arranged at the tail ends of the clamping arms far away from the surface of the tooth, and the anti-falling hooks of the clamping arms in the same group are arranged oppositely;

the base, the positioning plate and the clamping arm surround to form a clamping space for restraining the bracket.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, a ligating wing is arranged on the bracket, when the bracket is combined with the transfer clip, the top surface of the bracket is attached to the positioning plate, the clamping arm extends from the labial side surface of the ligating wing to the tooth side surface of the ligating wing, and the anti-drop hook is clamped with the tooth side surface of the ligating wing.

Optionally, in a combined state of the bracket and the transfer clip, at least a part of the bracket and the base abut against each other.

Optionally, each clamping arm has an expansion state and a corresponding clamping state, which are away from each other when subjected to an external force, and in the clamping state, the anti-drop hook prevents the bracket from dropping out of the clamping space; the end face of the anti-falling hook, which faces away from the positioning plate, is provided with a driving inclined plane for driving the clamping arm at the position to enter an expansion state.

Optionally, the torque required by the bracket to overcome the constraint of the unhooking prevention of the clamping arm is a removal torque, the clamping arm at least comprises a jaw-direction clamping arm and a gingival-direction clamping arm, and the removal torque corresponding to the jaw-direction clamping arm is smaller than the removal torque corresponding to the gingival-direction clamping arm.

Optionally, the protrusion distance of the gingival clamping arm for preventing unhooking is S1, the protrusion distance of the jaw clamping arm for preventing unhooking is S2, and S1 is greater than or equal to S2; and the anti-drop hook of the jaw clamping arm is provided with a drop-out arc surface.

Optionally, from the positioning plate, the extension distance of the jaw to the clamping arm is smaller than the extension distance of the gum to the clamping arm.

Optionally, the positioning plate is provided with a plurality of deformation releasing notches, and at least one of the deformation releasing notches is located between the two clamping arms.

Optionally, the positioning plate includes a central portion and branch portions diverging from the central portion to the periphery, and each of the clamping arms is disposed on the corresponding branch portion; or

The positioning plate comprises a central portion and a surrounding portion arranged around the central portion, and each clamping arm is arranged on the surrounding portion.

Optionally, the positioning plate is overall in an X shape, a W shape, an i shape or a square shape, and each clamping arm is respectively located at the outer edge of the positioning plate or the end of each branch shape.

Optionally, an observation hole penetrating through the positioning plate is formed in the positioning plate, and the central axis of the bracket is exposed in the observation hole when the bracket is combined with the transfer clamp.

Optionally, different groups of the clamping arms are connected with each other through a support rod, and two ends of the support rod are respectively connected to one side of the corresponding clamping arm close to the positioning plate; or the two ends of the supporting rod are respectively connected to the positions near the anti-drop hooks of the corresponding clamping arms.

The application also discloses a bracket mounting method of the stably positioned transfer clip, which is used for assembling a bracket with a ligating wing into the transfer clip in the technical scheme, and comprises the following steps:

aligning the top surface of the bracket with the locating plate;

rotating the bracket to a first direction by a preset angle by taking the plane of the base as a rotating plane;

positioning the ligating wing at one side of the bracket into the clamping space until the ligating wing is clamped with the corresponding anti-drop hook;

and rotating the bracket by a preset angle in the opposite direction of the first direction by taking the plane of the base as a rotating plane, so that the ligation wings on the other side of the bracket are extruded with the corresponding anti-drop hooks to enter the clamping space.

The application also discloses a bracket transferring guide plate for stable positioning, which comprises an occluding block and a plurality of transferring clamps in the technical scheme.

Optionally, an extension part extending towards the lingual side is arranged on the lingual side of the occlusion block, an end part of the extension part far away from the occlusion block is a force application part, and a distance from the force application part to the incisal edge of the tooth is a detachment force arm.

Optionally, the extension part is integrally U-shaped, one end of the opening is connected with the occlusion block, the other end of the opening is matched with the teeth, and a vacant area is formed in the U-shaped opening.

The technical scheme that this application discloses improves the cooperation effect with holding in the palm the groove through the configuration optimization that shifts the clamp, has avoided mainly realizing the location of holding in the palm the groove through interference fit among the prior art, and fundamentally has avoided the positioning deviation because of the material sclerosis leads to, has brought the assembly simultaneously simply, fixes a position stable advantage.

Specific advantageous technical effects will be further explained in conjunction with specific structures or steps in the detailed description.

Drawings

FIG. 1 is a schematic view of a bracket transfer guide in a first embodiment;

FIG. 2 is a schematic view of the first embodiment of the transfer clip and bracket combination;

FIG. 3 is a schematic view of the anti-slip hook and bracket of the transfer clip of FIG. 2;

FIG. 4 is a schematic top view of the transfer clip and bracket of FIG. 2 in mating relationship;

FIG. 5 is a schematic view of the transfer clip of FIG. 2;

FIG. 6 is a schematic view of the transfer clip of FIG. 5 in another view;

FIG. 7 is a diagram showing the structure of a transfer clip according to a second embodiment;

FIG. 8 is a schematic view of the transfer clip of FIG. 7 in another perspective;

FIG. 9 is a diagrammatic illustration of the transfer clip and bracket of FIG. 7 engaged;

FIG. 10 is a schematic view of a bracket transfer guide in a third embodiment;

FIG. 11 is an enlarged view of the bracket transfer guide incisor portion of FIG. 10;

fig. 12 is a schematic view of the engagement of a bite plate with teeth without a vacant area;

FIG. 13 is a schematic view of the bracket transfer guide of FIG. 11 engaged with a tooth;

FIG. 14 is a schematic view of a bracket transfer guide in a fourth embodiment in cooperation with a tooth;

FIG. 15 is a schematic view of a fifth embodiment of a transfer clip and bracket engagement;

FIG. 16 is a schematic view of the transfer clip of FIG. 15;

FIG. 17 is a schematic view of the transfer clip of FIG. 16 in another perspective configuration;

FIG. 18 is a schematic view of a transfer clip and bracket combination according to a sixth embodiment;

FIG. 19 is a schematic view of the transfer clip of FIG. 18;

FIG. 20 is a schematic view of the transfer clip of FIG. 19 in another perspective;

FIG. 21 is a diagrammatic illustration of a transfer clip and bracket engagement according to a seventh embodiment;

FIG. 22 is a schematic view of the transfer clip of FIG. 21;

FIG. 23 is a schematic view of the transfer clip of FIG. 22 in another perspective;

FIG. 24 is a schematic view of the anti-unhooking structure of the gingival clamping arm;

fig. 25 is a schematic view of an anti-unhooking structure of the jaw-direction clamping arm.

The reference numerals in the figures are illustrated as follows:

1. transferring the clamp; 11. a base; 12. positioning a plate; 121. a deformation release notch; 122. an observation hole; 13. a clamp arm; 131. the hook is prevented from falling off; 132. a drive ramp; 133. removing the cambered surface; 14. a clamping space; 15. a support bar;

2. a bracket; 21. a tie wing;

3. a tooth;

4. an occluding block; 41. an extension; 42. a vacant area; 43. and a regulating block.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to FIGS. 2-9, the present application discloses a securely positioned transfer clip 1 for positioning a bracket 2 onto a surface of a tooth 3, comprising

A base 11 for connecting with the bite block 4;

a positioning plate 12 extending from the base 11 and disposed toward the surface of the tooth 3;

the clamping arms 13 are arranged in groups, each clamping arm 13 extends from the positioning plate 12 towards the surface of the tooth 3, the tail end of each clamping arm 13 far away from the surface of the tooth 3 is provided with an anti-falling hook 131, and the anti-falling hooks 131 of the clamping arms 13 in the same group are oppositely arranged;

the base 11, the positioning plate 12 and the clamping arm 13 enclose a clamping space 14 which constrains the bracket 2.

The clamping space 14 may be configured to have a clamping effect similar to that of the prior art, or may be configured to have a lifting effect, that is, the enclosure surrounded by the base 11, the positioning plate 12, and the clamping arm 13 mainly realizes the positioning rather than the positioning of the bracket 2 by clamping. It will be appreciated, however, that the clamping space 14 may generate a slight clamping force on the bracket 2, regardless of the particular product in which it is placed, primarily in view of industrial production accuracy and efficiency. The technical scheme that this application discloses improves through the configuration optimization who shifts and press from both sides 1 and hold in the palm the cooperation effect of groove 2, has avoided mainly realizing the location of holding in the palm groove 2 through interference fit among the prior art, and fundamentally has avoided the positioning deviation because the material hardens and lead to, has brought the assembly simultaneously simply, the stable advantage in location.

In the embodiment shown in fig. 2 to 4, the bracket 2 is provided with tie wings 21, when the bracket 2 is combined with the transfer clip 1, the top surface of the bracket 2 abuts against the positioning plate 12, the holding arms 13 extend from the labial side surfaces of the tie wings 21 to the tooth-side surfaces of the tie wings 21, and the anti-release hooks 131 are engaged with the tooth-side surfaces of the tie wings 21.

In this embodiment, the hook 131 engaging with the tooth-side surface of the tie blade 21 is in a hanging type, and a plurality of (4 in the drawing) tie blades 21 of the bracket 2 are hung. In the drawings, it can be seen that the holding arms 13 are independent and have a certain elasticity. In a particular product, the inner side of the retaining arm 13 may provide a slight interference fit with the bracket 2 tie wing 21. The bracket 2 can be further positioned by other means than the positioning of the holding arm 13. Referring to the drawings, in a state that the bracket 2 is combined with the transfer clip 1, at least a part of the bracket 2 and the base 11 abut against each other. The advantage of this arrangement is that the clamping arm 13 can achieve full control of the six degrees of freedom of the bracket 2.

In the drawings, one side of the tie wing 21 abuts the base 11. Through shifting clamp 1 and holding in the palm groove 2 jaw to the contact, carry out assistance-localization real-time to this direction in support groove 2, carry out assistance-localization real-time when holding in the palm groove 2 simultaneously.

As can be understood from the above, the clamping arms 13 need to be deformed to a certain extent, and referring to an embodiment, each clamping arm 13 has an expansion state and a corresponding clamping state which are away from each other by an external force, and in the clamping state, the anti-falling hooks 131 prevent the bracket 2 from falling out of the clamping space 14; the end surface of the anti-slip hook 131 facing away from the positioning plate 12 is provided with a driving inclined surface 132 for driving the clamping arm 13 to enter the expanded state. The arrangement of the driving inclined plane 132 can more easily realize the assembly of the bracket 2 and realize the technical effect of easy scratching; removal of the opposing bracket 2 after bonding may be accomplished by twisting the bite plate to force the retaining arms 13 to break or enter an expanded state and disengage from retention to the bracket 2. In addition to the direct removal mentioned above, reference can also be made to an embodiment in which the torque required by the bracket to overcome the unhooking-resistant constraint of the holding arms is a removal torque, the holding arms comprising at least a maxillo-holding arm and a gingival holding arm, the corresponding removal torque of the maxillo-holding arm being smaller than the corresponding removal torque of the gingival holding arm. The advantage of this setting lies in providing different fixed effects to the centre gripping arm of different groups, provides adjustable structure basis for demolising feeling. In particular, in the removal mode mentioned below, the bracket is preferentially pulled out of the jaw-holding arm, so that the retention effect can be ensured, the removal moment can be reduced, and the condition that the bracket bonding fails due to removal can be avoided.

The adjustment of the dismantling moment can be realized by various modes such as material adjustment, size and thickness adjustment, structural change and the like of the clamping arm. For example, referring to the embodiment shown in fig. 24 to 25, the protrusion distance of the gingival retaining hook 131 of the jaw-holding arm is S1, the protrusion distance of the jaw-holding arm retaining hook 131 is S2, and S1 is equal to or greater than S2; and the anti-falling hook 131 of the jaw-direction clamping arm is provided with an anti-falling cambered surface 133. The arrangement is specifically changed into a shorter and smooth anti-drop hook 131 of the jaw-direction clamping arm, and compared with other modification schemes, the arrangement in the embodiment has the advantages of simple structure, small change and good adaptability to the bracket, and is easy to remove after clinical bonding.

Independently of the unhooking prevention, in reference to an embodiment, from the positioning plate, the extension distance of the jaw to the gripping arm is smaller than the extension distance of the gum to the gripping arm. The control of the dismantling moment can be realized through the adjustment of the extension length of the clamping arm.

In order to further improve the adaptability of the transfer clip 1 to the bracket 2, it can be seen from the attached drawings that a plurality of strain relief notches 121 are provided on the positioning plate 12 and at least one is located between the two holding arms 13. The deformation releasing notches 121 can improve the elasticity of the positioning plate 12 to improve adaptability. The deformation releasing notch 121 can be arranged independently or can be arranged integrally with the positioning plate 12.

From another perspective, the positioning plate can have the following design ideas:

the positioning plate comprises a central part and branch parts diverging from the central part to the periphery, and each clamping arm is respectively arranged on the corresponding branch parts (for example, fig. 2 to 9, 15 to 17, 21 to 23); or

The positioning plate includes a central portion and a surrounding portion disposed around the central portion, with each clamping arm being disposed on the surrounding portion (e.g., fig. 18-20).

The deformation of deformation release breach all can be understood to above-mentioned different settings, and core aim at improves the deformability of locating plate to improve the adaptability to different support grooves, different cases and emergency.

In a specific shape, referring to fig. 2 to 9, the positioning plate 12 is generally X-shaped and the holding arms 13 are respectively located at the ends of the X-shape. Referring to fig. 15 to 17, the positioning plate 12 is generally W-shaped and the respective holding arms 13 are located at ends of the W-shape. Referring to fig. 21 to 23, the positioning plate 12 is generally i-shaped and the holding arms 13 are respectively located at the ends of the i-shape. Referring to fig. 18 to 20, the positioning plate 12 is generally square-shaped and the holding arms 13 are respectively located at the outer edges of the square shape. Those skilled in the art can adapt the various shaped products according to the above description, and therefore the arrangement of the specific shape should not be considered as limiting the scope of the present embodiment.

In addition to the deformation releasing notch 121, the positioning plate 12 may further include other components to improve the adaptability of the bracket 2, in the embodiment shown in fig. 2, the positioning plate 12 is provided with an observation hole 122 penetrating therethrough, and the central axis of the bracket 2 is exposed to the observation hole 122 when the bracket 2 is combined with the transfer clip 1. The viewing aperture 122 represents a hollow design of the central axis of the top of the transfer clip 1. In the specific dimension, the width of the observation hole 122 is 0.3MM to 1MM, the observation hole 122 can be used for visual observation of the bonding central axis, the overall elasticity of the positioning plate 12 can be further improved by the observation hole 122 and the deformation releasing structure, and when the mesh bottom of the bracket 2 is attached to the tooth surface and slightly deviates from the expected rotation, the engagement block 4 can be completely matched with the tooth 3 through the overall elastic deformation.

The clamping arms 13 can be independently arranged with reference to the above description, or with reference to the embodiment shown in fig. 7 to 9, different sets of clamping arms 13 are connected with each other through a support rod 15, and two ends of the support rod 15 are respectively connected to one side of the corresponding clamping arm 13 close to the positioning plate 12; or both ends of the support rod 15 are connected to the vicinity of the anti-drop hooks 131 of the corresponding holding arms 13. The support rods 15 may be disposed between the holding arms 13 or between the holding arms 13 and the base 11, and the support rods 15 at different positions may be aligned with each other or may be misaligned. The support rod 15 can adjust the mechanical property of the clamping arm 13 independently of the positioning plate 12 and the clamping arm 13. The mechanical property is mainly expressed in that the support rod 15 performs auxiliary restraint on deformation in the direction between the clamping arms 13. More importantly, bracing piece 15 can realize shifting the supplementary effect of printing of pressing from both sides 1 in 3D printing process, prevents the printing failure that 13 terminal unsettled leads to of centre gripping arm when 3D prints to improve production effect and product quality.

In combination with the above, the present application, through the structural optimization of the transfer clip 1, the positioning effect of the bracket 2 is improved, and correspondingly, the installation method of the bracket 2 can also be optimized correspondingly, and the present application also discloses the installation method of the bracket 2 of the transfer clip 1 for stabilizing the positioning, which is used for assembling the bracket 2 with the tie wings 21 into the transfer clip 1 in the above technical solution, and comprises:

aligning the top surface of the bracket 2 with the positioning plate 12;

rotating the bracket 2 to a first direction by a preset angle by taking the plane of the base 11 as a rotating plane;

positioning the ligating wing 21 at one side of the bracket 2 into the clamping space 14 until the ligating wing is clamped with the corresponding anti-drop hook 131;

the plane of the base 11 is used as a rotation plane, the bracket 2 is rotated by a predetermined angle in a direction opposite to the first direction, so that the tie wings 21 on the other side of the bracket 2 are pressed by the corresponding anti-slip hooks 131 to enter the clamping space 14.

In a specific embodiment, the dentures 2 are pre-screwed into a portion of the holding arms 13 from the maxillo-ligature wings 21, and then the other portion of the holding arms 13 are squeezed to deform and then loaded, wherein the specific squeezing sequence can be as described above with respect to the rotation direction of the dentures 2, or can be implemented by pre-screwing the dentures 2 into the gingival holding arms 13 and then squeezing the dentures to deform the holding arms 13. Of course, the clip arms 13 may be entirely pressed by the tie wings 21 to be deformed outward in the expanded state and then resiliently returned to the clipped state after being loaded.

Accordingly, the method for separating the bracket 2 can be found in the related records of the chinese patent publication No. CN 111991108A, and is not repeated herein.

Based on the above description, it will be appreciated that the present application also discloses a securely positioned bracket 2 transfer guide, comprising a bite block 4 and a plurality of the above described transfer clips 1.

The connection between the bite block 4 and the transfer clip 1 can be directly realized through the base 11, and also can be realized through the connection of the adjusting block 43 as shown in fig. 13, the adjusting block 43 can adjust the overall spatial attitude of the transfer clip 1 compared with the bite block 4 more freely, thereby providing a better positioning effect of the bracket 2.

In the specific structural arrangement of the bite block 4, illustratively, the labial portion of the bite block 4 is embedded about 1mm to 4mm, and the lingual portion is embedded about 0mm to 1 mm. In order to further improve the separation effect of the bite block 4, the lingual side of the bite block 4 is provided with an extension 41 extending to the lingual side. The end of the extension 41 away from the bite block 4 is a force application part, and the distance from the force application part to the incisal margin of the tooth is a removal force arm L1. The provision of the extensions 41, which are arranged in cooperation based on the direction of removal of the bite block, has the advantage of providing a greater removal torque to the bite block, thereby facilitating removal. Specifically, the distance from the U-shaped bottom of the extension part 41 to the incisal margin of the tooth 3 is a detaching moment arm L1, and L1 is 4 mm-15 mm.

Meanwhile, the extension 41 extends from the lingual side of the bite block 4 to the lingual side by a predetermined distance and then is folded back to the labial side. The extension 41 is folded back until it fits the lingual side of the tooth 3, thereby providing a positioning effect. The extension 41 is generally U-shaped with an opening having one end connected to the bite block 4 and the other end engaging the tooth 3, and a void area 42 within the U-shaped opening. Referring to fig. 12, a schematic view of a bite plate without a void 42 is shown, during separation, particularly of incisors, where the bite plate and tooth 3 may be pressed against each other, thereby affecting separation. Referring to the embodiment shown in fig. 13, the vacant areas 42 are used to provide space for the teeth 3 to move when the bite plate is separated, i.e., the teeth 3 enter the vacant areas 42 at least partially during separation of the bite plate and the teeth 3. The height H1 of the vacant area 42 is 1.5 mm-4 mm, which is reserved for the space when the bite block 4 is removed and rotates relative to the teeth 3.

Of course, the designs for facilitating the removal and providing the space for the teeth movement can be combined with each other, and referring to fig. 14, the extension part 41 can be provided with a force application part after providing a sufficient empty area 42, so as to meet the use requirements in different scenes.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.

Claims

1. A securely positioned transfer clip for positioning a bracket onto a tooth surface, comprising

A base for connection with the bite block;

2. The firmly positioned transfer clip of claim 1, wherein a tie wing is disposed on the bracket, when the bracket is combined with the transfer clip, the top surface of the bracket is attached to the positioning plate, the clip arm extends from the labial side surface of the tie wing to the tooth side surface of the tie wing, and the anti-slip hook is engaged with the tooth side surface of the tie wing.

3. The securely positioned transfer clip of claim 1 wherein in the bracket and transfer clip engaged condition, at least a portion of the bracket abuts the base.

4. The securely positioned transfer clip of claim 1 wherein each gripping arm has an expanded state in which it is forced away from each other and a corresponding gripping state in which said anti-slip hooks prevent said bracket from falling out of said gripping space; the end face of the anti-falling hook, which faces away from the positioning plate, is provided with a driving inclined plane for driving the clamping arm at the position to enter an expansion state.

5. The securely positioned transfer clip of claim 4 wherein the torque required by said bracket to overcome said anti-snag restraint of said gripping arms is a removal torque, said gripping arms comprising at least a maxillo-gripping arm and a gingival gripping arm, said maxillo-gripping arm corresponding removal torque being less than said gingival gripping arm corresponding removal torque.

6. The securely positioned transfer clip of claim 5 wherein said gingival gripping arm has an anti-snag projection distance of S1, said jaw gripping arm has an anti-snag projection distance of S2, S1 is greater than or equal to S2; and the anti-drop hook of the jaw clamping arm is provided with a drop-out arc surface.

7. The securely positioned transfer clip of claim 1 wherein said alignment plate has a plurality of strain relief notches and at least one of said plurality of strain relief notches is located between two of said clip arms.

8. The securely positioned transfer clip of claim 1 wherein said positioning plate comprises a central portion and branch portions diverging from said central portion to a periphery, each gripping arm being disposed on a respective branch portion; or

9. The securely positioned transfer clip of claim 1, wherein said positioning plate is generally X-shaped, W-shaped, i-shaped, or square-shaped, and each of said clip arms is located at an outer edge of said positioning plate or at an end of each of said branch shapes.

10. The clamp of claim 1, wherein the positioning plate has an observation hole formed therethrough, and the central axis of the bracket is exposed to the observation hole when the bracket is coupled to the clamp.

11. The stably positioned transfer clip of claim 1, wherein different sets of gripping arms are connected to each other by a support rod, and two ends of the support rod are respectively connected to the sides of the corresponding gripping arms close to the positioning plate; or the two ends of the supporting rod are respectively connected to the positions near the anti-drop hooks of the corresponding clamping arms.

12. A method of bracket installation of a securely positioned transfer clip for fitting a bracket with tie wings into a transfer clip according to any one of claims 1 to 11, comprising:

aligning the top surface of the bracket with the locating plate;

13. A securely positioned bracket transfer guide comprising a bite block and a plurality of transfer clips according to any one of claims 1 to 11.

14. The securely positioned bracket transfer guide of claim 13, wherein the lingual side of the bite block is provided with an extension extending to the lingual side, the end of the extension distal from the bite block is a force applying portion, and the distance of the force applying portion from the incisal edge of the tooth is a removal force arm.

15. The securely positioned bracket transfer guide of claim 13, wherein the extension is generally U-shaped with an opening at one end for connection to the bite block and an opening at the other end for engagement with a tooth, the U-shaped opening having a void therein.