Manufacturing method for orthodontic metal square arch wire consistent with dental arch curve
A production method and orthodontic arch wire technology are applied in the production of orthodontic metal square wires and the field of metal square arch wire production, which can solve the problems of insufficient torque, difficult degree of control, large resistance, etc., to achieve guaranteed effects, The effect of saving clinical operation time and reducing labor intensity
Inactive Publication Date: 2014-04-23
李岩峰
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Problems solved by technology
[0003] However, the following problems have been found clinically in the process of closing the extraction gap with the sliding method of the straight wire appliance: 1. During the process of retracting the anterior teeth, the axis of the anterior teeth is likely to be too upright or even the tongue is tilted, which affects the occlusion of the anterior teeth stable and beautiful
2. The posterior arch wire has a lot of resistance in the bracket and buccal tube
3. Sometimes physicians need to use torque pliers to restrain excessive adduction of the crowns of the upper anterior teeth, but the degree is not easy to grasp, which will result in insufficient torque or the archwire at the torque is not easy to enter the groove
[0004] At present, there is no such orthodontic archwire that can be directly used in the market. The front and rear sections are designed to meet different functional needs. The front section has torque, and the back section does not.
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[0016] An arch wire for orthodontics, which is mainly used in tooth extraction cases. After the teeth are leveled and aligned, the front teeth are retracted to close the tooth extraction gap by sliding the straight wire appliance (straight wire bracket). To prevent the long axis of the upper anterior teeth from being too upright or crown-lingual inclination (that is, the crown is inclined towards the tongue), and to prevent excessive friction between the archwire and the bracket or buccal tube, which can save the clinician's chairside operation time.
[0017] The diagram of the arch wire is as figure 1 As shown, the orthodontic arch wire (1) is an orthodontic square arch wire consistent with the arc of the dental arch, and the material is nickel-titanium or stainless steel and other metals. It mainly includes the front segment of the arch wire (2) and the rear segment of the arch wire (3). The front section of the arch wire is located between the two lateral incisors (inclu...
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The invention provides a manufacturing method for an orthodontic metal square arch wire (1) consistent with a dental arch curve, and the orthodontic metal square arch wire (1) is mainly applied to a stage of retracting anterior teeth and closing tooth extraction clearance when a straight-wire arch sliding method is used. The arch wire (1) has a rectangular cross section and is divided into a front segment and a rear segment. The front-segment arch wire (2) (an area between two lateral incisors) has the lingual root torque with an angle of alpha, and enters a groove and tightly clamps a groove (4); the front-segment arch wire and the groove have no relative displacement at the sagittal plane; and the edge crossing angles of the arch wire are 90 DEG. The rear-segment arch wire (3) has the obtuse edge crossing angles at the cross section, is flat and straight, has no torque and is consistent with a buccal tube and a bracket groove. By adding the torque to the front-segment arch wire, lip root inclination (lingual crown inclination) is avoided to the greatest extent during retraction of anterior teeth, and the uttermost integral parallel movement of anterior teeth during the whole retraction is guaranteed. Due to the fact that the rear-segment arch wire has no torque and a certain clearance is kept between the arch-wire rear segment and the buccal tube and the bracket groove, the frictional force between the arch wire and the groove is reduced when the tooth extraction clearance is closed and the arch wire moves backward.
Description
technical field [0001] The invention relates to a method for manufacturing a metal square arch wire used in orthodontic treatment, and belongs to the technical field of dental medical devices, in particular to a method for manufacturing an orthodontic metal square wire consistent with the arc of a dental arch. Background technique [0002] In the process of orthodontic treatment of tooth extraction cases, after the teeth are leveled and aligned, the front teeth are retracted to close the tooth extraction gap by using the straight wire appliance sliding method. At this time, maintaining the overall parallel movement of the front segment of the dental arch (anterior teeth) and reducing the friction force of the rear segment of the dental arch (posterior teeth) are the key points and difficulties. Effectively solving these two problems will improve the speed and effect of clinical correction. changed. [0003] However, the following problems have been found clinically in the p...
Claims
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Inventor李岩峰韩奕诗樊佳东刘斌张月曹静曾祥龙
Owner李岩峰