Elastic push rod suitable for bracket-free invisible correction device
An invisible appliance and push rod technology, applied in the fields of medical science, dentistry, orthodontics, etc., can solve problems such as affecting the dentition closeness, detachment, affecting the treatment effect, etc., to achieve easy production, improve the degree of fit, Easy-to-use effects
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[0026] In this implementation, the common Angle Class II malocclusion correction is taken as an example for illustration. When treating Angle's Class II malocclusion, the upper teeth need a backward force and the lower teeth need a forward force. Therefore, collars matching the push rods were made at the first molars on both sides of the upper jaw (maxillary braces) without brackets and the canines of the lower jaw (mandibular braces) without brackets, respectively. After the upper and lower braces are in place, assuming that the distance between the collar at the upper first molar and the collar at the mandibular canine is 25 mm during occlusal, the length of the push rod of the elastic push rod is set to 30 mm. The specific structure and parameters are:
[0027] It consists of a push rod body 1 made of elastic material and a plug 2 of elastic material that is integrated with the push rod body at both ends of the push rod body. The plug is inflated from the far end to the ne...
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