单颗后牙种植修复体咬合特征改变的临床研究

Clinical study on occlusal characteristics of single posterior dental implant

目的研究单颗后牙种植修复体咬合特征的改变。方法前瞻性研究选取2017年1月至2018年8月于承德市口腔医院接受单颗后牙种植修复治疗的30例患者作为研究对象,将同一患者的种植修复体作为种植牙组,以其对侧的同名天然牙作为天然牙组。分别采用T-scan咬合分析仪记录修复完成时以及修复3个月后种植体与其对侧同名天然牙的咬合力百分比以及咬合接触时间。比较种植牙修复完成时、修复1年后的红色美学评分(PES)。结果种植牙组修复3个月后咬合力百分比(9.64±0.50)%高于修复完成时(4.72±0.44)%,差异具有统计学意义(P<0.05);种植牙组修复完成时、修复3个月后咬合力百分比均低于天然牙组(12.32±0.62)%、(12.29±0.65)%,差异具有统计学意义(P<0.05)。种植牙组修复3个月后咬合接触时间(0.04±0.02)s,低于修复完成时的(0.08±0.02)s,差异具有统计学意义(P<0.05);种植牙组修复完成时、修复3个月后咬合接触时间均高于天然牙组(0.02±0.01)s、(0.02±0.01)s,差异具有统计学意义(P<0.05)。种植牙修复完成时以及修复1年后的各项PES评分比较,差异无统计学意义(P>0.05)。结论单颗后牙种植修复3个月后咬合特征出现改变,提示在临床工作中应重视对种植修复体咬合的定期复查。同时种植修复1年后的PES评分仍较为稳定,具有较好的软组织美学效果。

Objective To study the occlusal characteristics of single posterior dental implants.Methods Perspective study of a total of 30 patients who received single posterior tooth implantation and repair treatment in Chengde Stomatological Hospital from January 2017 to August 2018 were included as study objects.The implantation restoration of the same patient was used as the implant group,and the natural teeth of the same name of patients on the opposite side were used as the natural tooth group.T-scan occlusal analyzer was used to record the bite force percentage and occlusal contact time of the implant and its opposite eponymous natural tooth at the time of restoration and 3 months after restoration,and statistical analysis was performed.Pink ethetic score(PES)score at the time of restoration and 1 year after restoration of all dental implants were compared.Results The percentage of bite force in the implant group 3 months after restoration(9.64±0.50)%was higher than that after restoration(4.72±0.44)%,the difference was statistically significant(P<0.05).The percentage of bite force in the implant group was lower than that in the natural tooth group at the time of restoration and 3 months after restoration(12.32±0.62)%,(12.29±0.65)%,the difference was statistically significant(P<0.05).The occlusal contact time of the implant group 3 months after restoration(0.04±0.02)s was lower than that after restoration(0.08±0.02)s,the difference was statistically significant(P<0.05).The occlusal contact time of the implant group was higher than that of the natural tooth group at the completion of restoration and 3 months after restoration(0.02±0.01)s,(0.02±0.01)s,the difference was statistically significant(P<0.05).PES scores of implant restoration and 1 year after restoration were not significantly different(P>0.05).Conclusion The occlusal characteristics of single posterior teeth were changed after 3 months of dental implant restoration,which suggested that regular review of dental implant occlusion should be paid attention to in clinical practice.