Alhissan Abdurahman S, Pani Sharat Chandra
Ministry of Health, Riyadh Kingdom of, Saudi Arabia.
Schulich School of Medicine and Dentistry, University of Western Ontario, London, ON, Canada.
Int J Dent. 2021 Mar 17;2021:5515383. doi: 10.1155/2021/5515383. eCollection 2021.
This study aimed to retrospectively evaluate the success of zirconia crowns placed in the anterior teeth of children and evaluate the impact of pulp therapy of the tooth on the rate of failure.
A total of 70 anterior teeth of 20 children aged between 3 and 5 years who had undergone the placement of zirconia crowns under general anesthesia were followed up for 24 months. Kaplan-Meier Survival curves were plotted for the estimation of two-year survival time. The outcomes for teeth that had received pulp therapy were compared to those that had not received pulp therapy.
Kaplan-Meier survival analysis of 70 crowns observed over a two-year period showed that mean survival time for the crowns was 38.7 months with a confidence interval ranging from 38.1 months to 39.3 months. When the survival of the crowns was observed based on the presence or absence of symptoms, it was observed that only 4 out of the 70 crowns were symptomatic (with or without crown loss) at the end of two years, giving a success rate of 94.3%. The mean survival time was also increased to 39.5 months (confidence interval 39.15-39.98 months).
Zirconia crowns provide an acceptable level of success and longevity. Crowns placed on teeth after pulp therapy are more likely to fail than those placed on teeth without pulp therapy.
本研究旨在回顾性评估儿童前牙氧化锆全冠修复的成功率，并评估牙髓治疗对修复失败率的影响。
对20名年龄在3至5岁之间、在全身麻醉下接受氧化锆全冠修复的儿童的70颗前牙进行了24个月的随访。绘制Kaplan-Meier生存曲线以估计两年生存时间。比较接受牙髓治疗的牙齿与未接受牙髓治疗的牙齿的修复结果。
对70颗全冠进行为期两年的Kaplan-Meier生存分析显示，全冠的平均生存时间为38.7个月，置信区间为38.1个月至39.3个月。根据有无症状观察全冠的生存率，发现70颗全冠中只有4颗在两年后出现症状（有或无全冠脱落），成功率为94.3%。平均生存时间也增加到39.5个月（置信区间39.15 - 39.98个月）。
氧化锆全冠修复具有可接受的成功率和使用寿命。牙髓治疗后的牙齿上放置的全冠比未接受牙髓治疗的牙齿上放置的全冠更易失败。
