Duraisamy Preethi, Chander Naveen Gopi, Reddy Jetty Ramesh, Balasubramanium Muthukumar
Department of Prosthodontics, SRM Dental College, Ramapuram, Chennai, Tamilnadu, India.
J Oral Biol Craniofac Res. 2023 Sep-Oct;13(5):616-621. doi: 10.1016/j.jobcr.2023.07.006. Epub 2023 Aug 3.
The limitations of foundation restorations have been reduced with the advent of endocrowns. Despite their success, the extent of endocrowns tooth preparation into the pulp chamber has not been fully explored in the literature. The study aimed to evaluate the clinical performance of endocrowns with 5 mm extended pulp chamber tooth preparations in Indian patients over a 1- year period using modified USPHS criteria.
The observational study recruited 36 participants with definite criteria. Ceramic crown was planned for all the participants. Conventional endocrown tooth preparation was made with 5 mm pulpal extension. Clinical assessments were made at 0-, 6- and 12-months intervals using modified USPHS criteria. The data was statistically analyzed using Friedman test and Wilcoxon signed rank test.
One patient (2.8%) experienced loss of retention, marginal adaptation, and loss of anatomical form during 1-year follow up period. The majority of the participants (97.3%) reported no discomfort and high satisfaction. ( < .05) No opposing tooth wear was observed at 0- and 6-months. The results showed statistical significance in the parameters of retention, marginal adaptation, loss of anatomical form, and patient satisfaction. ( < .05).
The clinical performance of endocrowns with extended pulp chamber preparation was satisfactory for a period of 12 months.
随着内冠的出现,基牙修复的局限性已有所减少。尽管取得了成功,但内冠对牙髓腔的预备深度在文献中尚未得到充分探讨。本研究旨在使用改良的美国公共卫生服务(USPHS)标准,评估在印度患者中进行5毫米牙髓腔扩展预备的内冠在1年期间的临床性能。
该观察性研究招募了36名符合明确标准的参与者。计划为所有参与者制作陶瓷冠。采用5毫米的牙髓腔扩展进行传统的内冠牙体预备。使用改良的USPHS标准在0、6和12个月时进行临床评估。使用弗里德曼检验和威尔科克森符号秩检验对数据进行统计分析。
在1年的随访期内,1名患者(2.8%)出现了固位丧失、边缘适应性差和外形丧失的情况。大多数参与者(97.3%)表示无不适且满意度高。(P<0.05)在0和6个月时未观察到对颌牙磨损。结果显示在固位、边缘适应性、外形丧失和患者满意度等参数方面具有统计学意义。(P<0.05)。
牙髓腔扩展预备的内冠在12个月期间的临床性能令人满意。