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目的分析探讨FR-Ⅲ型功能调节器对乳牙期、替牙期前牙反儿童的治疗效果。方法 36例乳、替牙期轻度安氏Ⅲ类错儿童,采用FR-Ⅲ型功能调节器进行治疗,采用自身对照法对比治疗前后头影测量结果。结果①牙列变化:治疗后,1-SN角显著增大而1-NB角显著减小(P<0.05),上前牙唇倾、下前牙舌倾。②软组织变化:面凸角及鼻唇角经治疗后增大(P<0.05),上唇突点到审美线距离(UL-E)增大、下唇突点到审美线距离(LL-E)减小,提示上唇近中移动而下唇远中移动。③颌骨硬组织:治疗后,ANB角及SNB角均显著增大(P<0.05),示下颌后下旋转且下颌位置后移。结论 FR-Ⅲ型功能调节器对乳牙期、替牙期安氏Ⅲ类前牙反儿童具有良好的治疗效果,可临床推广使用。
Objective To investigate the therapeutic effect of FR-Ⅲ functional regulator on anti-children of primary teeth during deciduous period and molar period. Methods Thirty-six children with mild Angle Ⅲ malocclusion were enrolled in this study. The FR-Ⅲ functional modifier was used for the treatment. The contrast of the cephalometric results before and after treatment was compared with the self-control method. Results ① Dentition changes: After treatment, 1-SN angle increased significantly and 1-NB angle decreased significantly (P <0.05). (2) The changes of soft tissue: The facial lobe and nasolabial angle increased after treatment (P <0.05), the distance between the upper lip and the aesthetic line (UL-E) increased, the distance between the lower lip to the aesthetic line (LL- Reduce, suggesting that the upper lip near the middle of the lower lip and move. ③ Hard tissue of the jaw: After treatment, ANB angle and SNB angle were significantly increased (P <0.05), showing the mandibular posterior rotation and mandibular position backward. Conclusion The FR-Ⅲ functional modifier has a good therapeutic effect on Angle Ⅲ anterior teeth anti-children during deciduous period and dentition and can be used clinically.