摘要
目的 :探讨替牙期功能性安氏Ⅲ类错牙合的诊断和治疗。方法 :用功能分析法对 2 3例替牙期功能性安氏Ⅲ类错牙合病例治疗前同时拍摄的息止牙合位及正中牙合位的X线头颅侧位片进行重叠分析 ,根据下颌及下切牙变化量 ,辅助诊断替牙期功能性安氏Ⅲ类错牙合畸形。并根据不同的临床表现 ,采用不同的矫治器进行矫治。结果 :替牙期功能性安氏Ⅲ类错牙合病例 ,息止牙合位及正中牙合位X线头颅侧位片重叠分析 :SN -L1L1’后下交角明显减小(P <0 .0 5 ) ,DGn’与DGn长度差与正常参考值相比差异明显 (P <0 .0 5 )。结论 :功能分析法有助于诊断替牙期功能性安氏Ⅲ类错牙合 ;下颌联冠式斜面导板 ,上颌舌簧牙合垫矫治器 ,上颌“2× 4”固定矫治器 ,FR -3型功能调节器治疗各种替牙期功能性安氏Ⅲ类错牙合效果显著。
Objective:To investigate the diagnosis an d treatmeat methods of the functional Class Ⅲ malocclusion in the mixed dentition period.Method : Before treatment,23 mixed dentition functional Class Ⅲ malocclusions patient , RCP an d ICP cephalometric were taken at the same time. By superimposing every patient ,s RCP and ICP cephalometric tracings, the functional analysis was performed on the superimpositions. We based on the abnormal variation volume of the mandible and incisor to assist diagnosing the functional Class Ⅲ malocclusions. Accord ing their different clinical phenotypes. We applied different appliances to trea t the malocclusions and obtained good outcomes .Result:The an alytic results o f mixed dentition functional Class Ⅲ malocclusion patients,RCP and ICP cephalo metric tracing superimpositions: SN-L1 L1 'decrease significantly, the length di fference between DGn’and DGn differ significantly from the population normal va lue.Conclusion: The functional Class Ⅲ malocclusion, Lower in cisor’united acr ylic crown with guide slope, maxillary bite plate with springs on incisions ling nal surfaces, FR-3 appliance and 2×4 technique can efficiently treat various ki nds of mixed dentition functional Class Ⅲ malocclusions. [
出处
《临床口腔医学杂志》
2004年第11期683-684,共2页
Journal of Clinical Stomatology
关键词
口腔正畸
功能分析法
替牙期
功能性安氏Ⅲ类错he
orthodontic
functional analysis method
mixed dentition f unctional class Ⅲ malocclusion
