PAR指数和T-scan咬合系统运用于评价正畸咬合疗效的优势

Advantages of PAR Index and T-SCAN Occlusal System in Evaluating the Occlusal Efficacy of Orthodontic Treatment

正畸治疗的目标是平衡、稳定和美观,良好的咬合关系是实现以上目标重要的生理基础,其包括静态咬合和动态咬合。正畸咬合疗效的评价,包括对患者牙尖交错位时的覆、覆盖、中线、磨牙关系等静态咬合指标的评价,以及正中、侧方、前伸运动时的动态咬合评价。PAR指数代表患者偏离理想咬合的程度,可以通过比较治疗前和治疗后的PAR指数来定量评估正畸治疗的静态咬合变化。T-scan数字咬合测量系统因其具有“力和时间”的关联特点可用于正畸动态咬合疗效评价。就PAR指数和T-scan咬合系统评价正畸咬合疗效的优势进行综述。

The goals of orthodontic treatment are balance,stability and aesthetics,an important physiological foundation for achieving the above goals is a good occlusal relationship,which includes static and dynamic occlusion.The evaluation of occlusal efficacy involves the static occlusal indicators such as overbite,overjet,midline and molar relationship at the intercuspal position(ICP),as well as the dynamic occlusion during the centric and non-centric excursions.The PAR index represents the degree of deviation from the ideal occlusion,and the occlusal alternations can be quantitatively evaluated by comparing the differences in PAR index before and after orthodontic treatment.The T-scan digital occlusal system can be used to evaluate the dynamic occlusion because of its characteristics of“force and time”correlation.In this paper,the advantages of PAR index combined with T-SCAN occlusal system in evaluating the occlusal efficacy of orthodontic treatment were reviewed.