Dr. Talekar is in private practice, Kids Dental Corner Camp, and an associate professor, Department of Pediatric Dentistry, M A Rangoonwala Dental College and Research Centre, Pune, Maharashtra, India;, Email:
Dr. Chaudhari is a pediatric dental resident, Department of Pediatric Dentistry, M A Rangoonwala Dental College and Research Centre, Pune, Maharashtra, India.
Pediatr Dent. 2021 Sep 15;43(5):355-362.
The purpose of this clinical trial was to assess the clinical performance of primary molar zirconia crowns with a glass fiber-reinforced composite crown (GFRC) in primary molar teeth. This trial was designed as a prospective, randomized, bilateral split-mouth study. A total of 66 crowns were placed in 30 children, ages four to nine years, from October 2018 until January 2019. Assessment of the clinical performance was done at one week and at three, six, 12, and 18 months. Several criteria, such as color match, time taken for the clinical procedure, resistance to dislodgement prior to cementation, crown retention, occlusal wear, staining, gingival health, plaque retention, and parental satisfaction, were evaluated. Result: At 18 months, 58 crowns were analyzed: 30 ZR crowns and 28 GFRC crowns. There was a statistically significant difference (P<0.05) between staining, occlusal wear, gingival health, plaque retention, and parental satisfaction between groups at 18 months, with the zirconia crowns outperforming the GFRC crowns in all those categories. The only areas where GFRC crowns performed better than ZR crowns were the time required to place them and the resistance to dislodgement before cementation. Conclusion: This study demonstrated that primary molar zirconia crowns had highly acceptable and significantly better clinical performance than glass fiber-reinforced composite crowns after 18 months.
本临床试验旨在评估在乳磨牙中应用氧化锆全瓷冠（Zr）与玻璃纤维增强复合树脂冠（GFRC）的临床性能。该试验设计为前瞻性、随机、双侧劈裂口研究。共有 30 名 4 至 9 岁的儿童共 66 颗牙参与，于 2018 年 10 月至 2019 年 1 月期间接受治疗。分别在 1 周、3 个月、6 个月、12 个月和 18 个月时进行临床性能评估。评估标准包括颜色匹配、临床操作时间、粘固前脱位阻力、冠保留、咬合磨损、染色、牙龈健康、菌斑滞留和家长满意度等。结果：在 18 个月时，对 58 颗牙进行了分析：30 颗 ZR 冠和 28 颗 GFRC 冠。18 个月时，两组在染色、咬合磨损、牙龈健康、菌斑滞留和家长满意度方面存在统计学差异（P<0.05），氧化锆冠在所有这些方面均优于玻璃纤维增强复合树脂冠。玻璃纤维增强复合树脂冠唯一表现优于氧化锆冠的方面是放置所需时间和粘固前脱位阻力。结论：本研究表明，在 18 个月后，乳磨牙氧化锆全瓷冠的临床性能具有高度可接受性，且明显优于玻璃纤维增强复合树脂冠。
