[0031] Example 1
[0032] A supporting and traction composite accessory, including a body 1 and a traction hook 2, the body 1 and the traction hook 2 are fixed, the hook of the traction hook 2 is exposed, and the body 1 includes a mounting part for accommodating the traction hook 2 and an anchoring part 1B that provides anchorage, The anchor portion 1B is located on the side of the mounting portion. In use, the mounting part is down, the anchorage part 1B is down, and the anchorage part 1B faces the mesial direction of the dentition.
[0033] In some embodiments, such as image 3 with Figure 4 As shown, the body 1 is L-shaped, the mounting part is a vertical arm and the supporting part 1B is a horizontal arm, the horizontal part is connected to the vertical part and protrudes toward one side, the horizontal part and the vertical part are smoothly transitioned, and the vertical part is connected to the traction hook 2. . The horizontal part realizes the anchoring function, and the vertical part serves as the installation position for accommodating the towing hook 2. When the attachment is fixed on the tooth, the horizontal part faces the mesial direction, and the appliance is removed from the dentition. The vertical part comes out of the appliance before the horizontal part, so that the horizontal part will not prevent the appliance from being separated from the tooth. Both the vertical part and the horizontal part have smooth surfaces and contours (such as rounded or chamfered top corners, rounded corners on the sideline, etc.) to prevent the attachment from scratching the appliance.
[0034] A circular arc transitions between the vertical part and the horizontal part. The arc transition avoids scratching the appliance and also avoids stress concentration in the corresponding accessory slot on the appliance.
[0035] The side connecting the vertical part and the horizontal part is a hypotenuse, and an arc is arranged between the hypotenuse and the horizontal part, the horizontal part is at the top, the vertical part is at the bottom, and the upper end of the hypotenuse is inclined inward. Inside refers to the inside of the vertical part. The vertical part is inclined inward to increase the mating area between the horizontal part and the appliance in a limited space, which not only increases the adhesion between the horizontal part and the appliance, but also does not prevent the accessory from coming off the appliance.
[0036] The advantages of this kind of firmware are: 1. An attachment is integrated with anchorage and traction functions at the same time, the depression or extension of the teeth, and the pulling and traction of the teeth can be performed simultaneously, shortening the correction cycle. 2. The anchorage part faces the mesial direction, which will not affect the attachment of the attachment from the invisible appliance, but also can be attached to the invisible appliance stably, providing the biological force required for depression or extension.
[0037] In some embodiments, the body 1 has a triangular shape, and the triangle is an isosceles triangle or a right-angled triangle. The traction hook 2 is located at one of the corners, and the other two corners or the other corner are used as the anchor portion 1B. When the body 1 is a right triangle, the traction hook 2 is located at the smallest acute angle, and the other acute angle serves as the anchor portion 1B. When the body 1 is in an isosceles triangle shape, the traction hook 2 is located on the top corner, and the other pair of equal acute angles serves as the anchor portion 1B. The three corners of the triangle are rounded to prevent the attachment from scratching the invisible aligner.
[0038] Invisible appliance
[0039] In some embodiments, the invisible appliance used to make the above-mentioned anchorage and traction composite accessory and the invisible appliance 3 used with the accessory, the invisible appliance 3 has a composite accessory groove, and the composite accessory groove includes a connected anchor groove and The installation groove, the anchor groove protrudes from the installation groove, the anchor groove is on the top, and the installation groove is on the bottom.
[0040] When making the above-mentioned invisible appliance 3, first obtain the patient's occlusal digital model, design the installation position of the accessory on the digital model, and the anchorage part 1B of the accessory faces the mesial direction of the dentition; print the digital model with the accessory A solid dental model is formed, and then a film is covered on the solid dental model to form an invisible appliance 3. Fill the accessory slot of the invisible appliance 3 with a light-curing material (light-curing material is a dental material that can be fixed on the tooth after being cured by the action of light, such as a dental filling material, which is a commonly used material in dentistry), and pull the hook 2 Put it into the installation slot of the accessory slot, the light-curing material has a certain viscosity and adhesion before being cured. When the towing hook 2 is not stressed, the towing hook 2 can be stably attached to the uncured light-curing material , Put the invisible appliance 3 filled with light-curable material into the patient’s oral cavity and cure it with light. After curing, take out the invisible appliance 3 (usually the invisible appliance 3 in the posterior area comes out first), and take out the invisible appliance 3 The process is the demolding process of the accessory, the traction hook 2 is fixed in the accessory, and the accessory is fixed on the tooth. A rubber band is hung between the traction hooks 2 to assist the tooth traction and movement, and then the invisible appliance 3 is put into the patient’s mouth for aligning the teeth.
[0041] In the digital design of orthodontics, the shape and position of the attachment have been determined. The clinician only needs to put the light-curing material and the traction hook 2 into the corresponding attachment slot 3A, and then put the invisible aligner 3 into the patient’s mouth. Light curing is sufficient, no doctors are required to determine the location of the accessories based on their own experience, and the dependence on the clinician's experience is reduced.
[0042] In some embodiments, the invisible appliance 3 has at least two composite attachment grooves 3A. The invisible appliance 3 can also have a horizontal accessory slot and/or a vertical accessory slot, and the composite accessory can be used with the horizontal accessory and/or vertical accessory.
[0043] In some embodiments, the composite accessory groove 3A is L-shaped, the installation groove is a vertical groove and the anchor groove is a horizontal groove, the horizontal groove is connected to the vertical groove, the horizontal groove faces the mesial direction, and the horizontal groove and the vertical groove smoothly transition. The horizontal slot realizes the anchoring function, and the vertical slot serves as the installation slot for accommodating the towing hook 2.
[0044] A circular arc transitions between the vertical groove and the horizontal groove. The arc transition avoids scratching the appliance and also avoids stress concentration in the corresponding accessory slot on the appliance.
[0045] The side connecting the vertical groove and the horizontal groove is a hypotenuse, an arc is arranged between the hypotenuse and the horizontal groove, the horizontal groove is on the top, the vertical groove is on the bottom, and the upper end of the hypotenuse is inclined inward. Inner refers to the inner groove of the vertical groove.
[0046] In some embodiments, the composite accessory groove 3A is triangular, the triangle is an isosceles triangle or a right-angled triangle, the traction hook 2 is located at one of the corners, and the other two corners or the other corner are used as anchor grooves. The three corners of the triangle are rounded to prevent the attachment from scratching the invisible aligner 3.
[0047] The invisible appliance 3 is not only a template for making accessories, but also an appliance that is worn in the oral cavity for aligning the dentition. The position of the accessory is determined in the digital model design stage, which reduces the dependence on the experience of the clinician.
