双端固定桥修复前后基牙最大(牙合)力变化的研究

目的:研究双端固定桥修复前后基牙所能承受最大牙合力是否发生变化,并探讨其变化规律。方法:对33名第一磨牙缺失的患者以第二前磨牙和第二磨牙为基牙行常规双端固定桥修复,采用T-ScanⅡ咬合分析系统分别记录修复前、修复完成时及修复后2个月、4个月、6个月于牙尖交错位最大牙合力时的咬合情况并分析。结果:患者经固定桥修复完成时的咬合情况分别与修复前及修复后2个月、4个月、6个月的咬合情况存在差异。结论:双端固定桥修复后基牙所能承受的最大牙合力将增加,其增加量在修复完成后2个月内明显,而修复完成2个月后不明显。

Study on the Maximal Occlusal Force of Abutments before and after Restored with Rigid Fixed Bridge

Objective: To study whether the maximal occlusal force of abutments before and after restored with rigid fixed bridge is to change or not,and to probe into the rules of this change.Methods: 33 patients with first molar defected were restored by rigid fixed bridge with the second bicuspid and the second molar as the abutments.All patients were followed up for 6 months.The maximal occlusal force in intercuspal position were recorded by Tekscan occlusal diagnostic system before its restoration,instantly after its restoration,as well as 2 months,4 months and 6 months after its restoration,respectively.The data were analyzed by ANOVA.Results: Comparing the data taken instantly after its restoration with those of before its restoration,2 months,4 months and 6 months after its restoration,there had statistical changes.Conclusion: The maximal occlusal force of abutments in rigid fixed bridge will increase after its restoration,within 2 months.