摘要
目的通过临床实例介绍下颌三切牙患者各种不同的临床诊断设计方案和咬合关系调整的要点.方法对于下牙列缺失一颗切牙而成为三切牙的病例,根据临床不同情况,分别采用:(1)下颌对侧双尖牙或侧切牙减数;(2)上颌对应侧单侧减数;(3)缺牙处开展间隙后修复(4)移动下颌牙弓,缺牙侧建立完全近中关系等方法,结合片切、改变牙轴等手段调整中线和Bolton比值,以取得正常的前牙覆(牙合)、覆盖和后牙咬合关系.结果以上几种不同类型的病例都取得了较好的矫治效果,前牙覆(牙合)覆盖正常、上下中线一致,后牙咬合关系均较好.结论下切牙缺失患者咬合关系调整难度较大,临床诊断设计应与常规不同,通过不对称拔牙、单侧拔牙、修复、片切和改变牙轴等手段可以调整中线和Bolton比值,取得正常的前牙覆(牙合)、覆盖和后牙咬合关系.
Objective To introduce the treatment planning and methods of finishing the occlusion in patients with single lower incisor missing. Methods According to the different cases, the following measures were taken to obtain the final occlusion： （1） Extraction of one bicuspid or incisor opposite to the incisor misusing side in the lower arch; （2） Extraction of one bicuspid in the upper arch corresponding to the incisor missing side; （3） Expansion of the space at the incisor-losing area for bridge or implant;（4） Moving the lower arch and gaining complete Clasps Ⅲ molar relation at the incisor missing side. Means such as slenderizing of incisors and adjustment of tip and torque were sometimes adopted. Results Lower-incisolosing cases treated by the above methods acquired good occlusion, normal overjet and overbite. Conclusions The patients with single lower incisor missing can be treated successfully with different approaches.
出处
《口腔正畸学》
2005年第3期130-134,共5页
Chinese Journal of Orthodontics
