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目的观察氧化锆桩核在修复前牙残冠、残根中的临床效果。方法收集2006—2008年佛山市禅城区口腔医院就诊的前牙牙体缺损患者50例(59颗患牙),采用氧化锆桩核及全瓷冠修复,随访3年,观察其临床效果。结果随访3年后,所有患者均未见桩核折断、根折、边缘着色和继发性根尖周炎。修复后1、2、3年牙龈出血指数(BI)、牙周袋深度(PD)、附着丧失(AL)与治疗前比较差异均无统计学意义(均P>0.05),修复后各时间点间BI、PD及AL比较差异亦均无统计学意义(P>0.05)。二氧化锆桩核修复体的色差(ΔE)均处于临床可接受范围内,获得良好的美观效果。结论氧化锆桩核具有良好的美学和功能效果,值得临床推广应用。
Objective To observe the clinical effect of zirconia post and core in repairing anterior residual crown and residual root of anterior teeth. Methods Fifty patients (59 teeth) with tooth defects of the anterior teeth treated at the Stomatological Hospital of Chancheng District in Foshan City during 2006-2008 were collected. The patients were followed up for 3 years with zirconium oxide post and porcelain crowns. The clinical effect was observed. Results After 3 years of follow-up, none of the patients had a fracture of the nucleus, a root fracture, an edge coloration, and a secondary apical periodontitis. Bleeding index (BI), periodontal pocket depth (PD) and attachment loss (AL) were not significantly different from those before treatment (all P> 0.05) at 1, 2 and 3 years after repair. There was no significant difference between BI, PD and AL (P> 0.05). The color difference (ΔE) of zirconium oxide post-core prosthesis was within the clinically acceptable range, and the good esthetic effect was obtained. Conclusion Zirconia post core has good aesthetic and functional effects, which is worthy of clinical application.