摘要
目的研究安氏Ⅱ1错矫治前后咬合功能状况的变化,借以评价正畸治疗对咬合接触变化的影响,并结合国内外学者的相关研究数据,对比分析本研究对安氏Ⅱ1错咬合稳定重建的可靠程度及对临床的指导意义。方法选取2008-2012年来济南市口腔医院正畸科就诊的安氏Ⅱ1错患者30例,用T-scanⅡ数字化咬合分析系统记录患者矫治前后最大牙尖交错位的力总值(TOF)、力不对称指数(AOF)、力中心点位置(COF)、力中心点的最大位移(MMCOF)、闭合时间(TO),并进行统计分析。结果安氏Ⅱ1错患者矫治后TOF高于矫治前(P<0.01);矫治后COF距上颌中线的距离与矫治前相比减小(P<0.01);矫治后AOF、MMCOF、TO均低于矫治前(P<0.01)。结论正畸治疗能够改善安氏Ⅱ1错患者的力水平及平衡性;T-scanⅡ数字化咬合分析系统能够客观、真实、准确的显示咬合接触状态,其测量结果可作为临床评价的指标。
Objective Compare the occlusal function change of patients with Class Ⅱ division 1 malocclusion before and after orthodontic treatment, to evaluate the influence of orthodontic treatment on occlusal contact change, which in- corporated with the data of foreign and domestic researchers, to comparatively analyze the reliability for ocelusal recon- struction and the instructional significance for clinics on Class Ⅱ division 1 malocclusion. Methods T-scan Ⅱ sys- tem 4.02 was used to record total occlusal force （TOF） , asymmetry index of occlusal force （AOF） , center of force （COF）, maximal movement of COF （MMCOF）and time of occlusion （TO） before and after orthodontic treatment of 30 Class Ⅱ division 1 malocclusion patients（age averaged 12.33 years） with integrity dentition in the maximum intercuspa- tion （MIP）, and T test was used for statistical analysis. Results After orthodontic treatment, TOF was increased gradual- ly, and there was significance between before and after orthodontic treatment, preoperative level （P 〈 0.05）. COF was in the grey ellipse, which was much closer to the center of grey ellipse and maxillary medial line to the preoperative level （P 〈 0.01） ;AOF, MMCOF and TO were lower after treatment preoperatively, and significant difference was observed （P 〈 0.01）. Conclusions The result suggest that, premature contact, occlusal interferences and other unbalanced oc- clusal diseases may exist in Class Ⅱ Division 1 malocclusion, After orthodontic treatment, the occlusal force and balance on Class Ⅱ division 1 malocclusion patients can be improved. The occlusal contact the T-scan Ⅱ system reflects is ob- jective, exact and precise, and the measurement results of T-scan Ⅱ could be the marker for the clinic.
出处
《中国实用口腔科杂志》
CAS
2012年第11期686-689,共4页
Chinese Journal of Practical Stomatology
