优韧瓷高嵌体修复无髓后牙的效果

Restoration effects of pulpless posterior teeth with ultimate ceramic onlays

目的:观察优韧瓷高嵌体修复无髓后牙的效果。方法:选取2019年1月至2019年12月就诊的61例患者(67颗无髓后牙)进行前瞻性研究,采用数字化技术设计并制作优韧瓷高嵌体,治疗后1年采用美国公共卫生署修正评估系统评价远期修复效果(边缘密合度、边缘染色、颜色变化、表面质地、修复体完整性、固位、邻接关系及牙体完整性等8项),并比较患牙与对侧同名健康牙的牙龈指数(GI)。结果:修复后1年复查,8项指标成功率均在90.00%以上,高嵌体在边缘密合度、修复体完整性、修复体固位及牙体完整性等方面表现良好,成功率均达100.00%;所有患牙均未发生修复体崩折、脱落或基牙牙体折裂,有5颗发生边缘染色,6颗颜色轻度改变,5颗表面轻度粗糙,4颗邻接过松、有食物嵌塞,边缘染色、颜色变化、表面质地及邻接关系的成功率依次为92.54%、91.04%、92.54%及94.03%;患牙与对侧同名健康牙GI比较,差异无统计学意义(P>0.05)。结论:优韧瓷高嵌体修复无髓后牙在边缘密合度、修复体完整性、修复体固位及牙体完整性方面表现良好,且对牙龈健康的影响较小。

Objective:To observe restoration effects of pulpless posterior teeth with ultimate ceramic onlays.Methods:67 pulpless posterior teeth of 61 patients from January 2019 to December 2019 were selected for the prospective study.The ultimate onlays were designed and made by digital technology.The restorations were evaluated 1 year after the treatment using the U.S.public health Service modified evaluation system.The observation indicators included 8 items such as marginal fitness,marginal coloring,color change,surface texture,restoration integrity,good retention,adjacency and tooth integrity.During the re-examination,the periodontal examination was performed on 57 affected teeth whose contralateral homonymous teeth were healthy.The gingival index(GI)of the affected teeth and their contralateral homonymous healthy teeth were recorded.Results:One year after the restoration the success rate of 8 item reached more than 90.00%.The onlays performed well in four aspects:marginal fitness,restoration integrity,restoration retention and tooth integrity,with a success rate of 100.00%.None of the onlays collapsed or fell off,and no abutment tooth fracture was found.5 had marginal coloring,6 had mild color change,5 had mild roughness detected by surface probe,and 4 had loose adjacencies with food impaction.The success rates of marginal coloring,color change,surface texture and adjacency were 92.54%,91.04%,92.54%and 94.03%,separately.There was no significant difference in the GI between the affected tooth and its contralateral homonymous healthy tooth(P>0.05).Conclusions:The ultimate ceramic onlays perform well in four aspects:marginal fitness,restoration integrity,restoration retention and tooth integrity,and has little impact on the gingiva.