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对于儿童的牙列不齐,我们常采用活动矫治器进行矫治,但往往因乳牙脱落,恒牙初萌、牙冠较短,矫正器带在口内易脱位,影响矫正的作用力部分,而达不到矫治目的。为了早期矫矫治并达到满意疗效,我们在矫治过程中.根据病人的具体情况.采用不同的措施,加强矫正器的固位.1.乳前牙反(牙合)患者若第一或第二乳磨牙因龋坏缺损或脱落,矫正器固位不良。我们除选用单臂卡环固位外,再扩大后牙(牙合)垫范围。(牙合)垫颊侧延伸到牙龈缘以下止于颊
For children with missing dentition, we often use the activity appliance for orthodontic treatment, but often due to deciduous teeth, permanent teeth adorable, short crown, orthosis with easy dislocation in the mouth, affect the part of the force correction, and up to Less than the purpose of correction. In order to early correction and treatment to achieve satisfactory results, we are in the process of correction.According to the specific circumstances of the patient.Use different measures to enhance the retention of the appliance.If the anterior crossbite patients with first or second Deciduous teeth due to dental caries defect or loss, orthodontic poor retention. In addition to retaining the use of single-arm clasp, we expand the range of posterior teeth. The buccal side of the occlusal pad extends beyond the gingival margin to the cheek