而因事故或疾病所进行的正畸治疗将免征该税。
Exempt from the tax would be treatment of disfigurements due to accidents or disease.
目的研究牙周炎患牙正畸治疗的时机。
Objective To study the right time of the orthodontic treatment for periodontal disease.
目的探讨正畸治疗中骨龄与牙移动速率的关系。
Objective To investigate the relation between the skeletal age and the rate of tooth movement.
疼痛是令人不愉快的感觉，它使患者惧怕甚至放弃正畸治疗。
Pain is a terrible feeling, which can make one horrid, even give up orthodontic treatment.
结论：正畸病人埋伏阻生牙能通过治疗恢复牙列美观与功能。
Conclusion The impacted teeth can restor the functions and beauty .
结论：正畸病人埋伏阻生牙能通过治疗恢复牙列美观与功能。
Conclusion The impacted teeth can restor the functions and beauty .
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