Alrashdi Murad
Department of Orthodontic and Pediatric Dentistry, College of Dentistry, Qassim University, Buraydah 52571, Saudi Arabia.
Children (Basel). 2024 Nov 19;11(11):1402. doi: 10.3390/children11111402.
Prefabricated Zirconia Crowns (PZCs) are increasingly preferred for restoring primary teeth due to their esthetic appeal and retention. However, their rigid, unmodifiable design requires precise tooth preparation, often leading to aggressive reduction and potential pulp exposure. Pulpotomy, a standard treatment for reversible pulpitis and mechanical pulp exposure, is sometimes employed before PZCs. While pulpotomy is not routinely performed, its use raises important considerations about the interplay between restorative procedures and pulp therapy in pediatric dentistry, particularly regarding the long-term restoration outcomes of PZCs.
This study aimed to investigate the impact of pulpotomy on the success rate of PZCs.
We examined 81 anterior upper primary teeth treated with PZCs in children aged 2-5 years over a two-year period. Cases were divided into groups with and without pulpotomy. Follow-ups occurred at 6-month intervals, assessing clinical and radiographic outcomes. Analyses were performed using SPSS 25.0 software. The statistical significance was < 0.05.
A total of 81 anterior primary teeth were included. Chi-square analysis showed no association between pulp therapy and PZC success (χ = 0.051, = 0.822). The Kaplan-Meier survival analysis revealed comparable survival curves and the log-rank test showed no statistically significant difference in survival time between pulpotomy-treated and untreated groups (χ = 0.051, = 0.821).
Pulpotomy did not significantly affect the success rate of PZCs within 2 years.
预制氧化锆冠（PZCs）因其美观性和固位性，越来越多地被用于乳牙修复。然而，其刚性、不可修改的设计需要精确的牙体预备，这往往导致过度磨除并可能暴露牙髓。牙髓切断术是治疗可逆性牙髓炎和机械性牙髓暴露的标准方法，有时在进行PZCs修复之前会采用。虽然牙髓切断术并非常规进行，但其应用引发了儿童牙科中修复程序与牙髓治疗之间相互作用的重要考量，特别是关于PZCs的长期修复效果。
本研究旨在调查牙髓切断术对PZCs成功率的影响。
我们在两年时间内检查了81颗2至5岁儿童的上前乳牙，这些牙齿接受了PZCs修复。病例分为进行牙髓切断术组和未进行牙髓切断术组。每隔6个月进行随访，评估临床和影像学结果。使用SPSS 25.0软件进行分析。统计学显著性为<0.05。
共纳入81颗上前乳牙。卡方分析显示牙髓治疗与PZCs成功之间无关联（χ = 0.051，P = 0.822）。Kaplan-Meier生存分析显示生存曲线相似，对数秩检验显示牙髓切断术治疗组和未治疗组的生存时间在统计学上无显著差异（χ = 0.051，P = 0.821）。
在2年内，牙髓切断术对PZCs的成功率没有显著影响。
