Mannocci Francesco, Qualtrough Alison J E, Worthington Helen V, Watson Timothy F, Pitt Ford Thomas R
Department of Conservative Dentistry, Guy's, King's & St Thomas' Dental Institute, King's College London, London, UK.
Oper Dent. 2005 Jan-Feb;30(1):9-15.
Prospective clinical studies comparing the results of different types of restorations of endodontically treated teeth are lacking. This study compared the clinical success rate of endodontically treated premolars restored with fiber posts and direct composite to the restorations of premolars using amalgam. Premolars with Class II carious lesions were selected and randomly assigned to one of two experimental groups: (1) restoration with amalgam or (2) restoration with fiber posts and composite. One hundred and nine teeth were included in Group 1 and 110 in Group 2. Patients were recalled after 1, 3 and 5 years. No statistically significant difference was found between the proportion of failed teeth in the two experimental groups. Significant differences were observed between the proportion of root fractures (p=0.029) and caries (p=0.047), with more root fractures and less caries observed in the teeth restored with amalgam at the five-year recall. Within the limits of this study, it can be concluded that restorations with fiber posts and composite were found to be more effective than amalgam in preventing root fractures but less effective in preventing secondary caries.
目前缺乏比较不同类型根管治疗后牙齿修复效果的前瞻性临床研究。本研究比较了用纤维桩和直接复合树脂修复的根管治疗前磨牙与用银汞合金修复的前磨牙的临床成功率。选择患有Ⅱ类龋损的前磨牙并随机分配到两个实验组之一：（1）用银汞合金修复或（2）用纤维桩和复合树脂修复。第1组纳入109颗牙齿，第2组纳入110颗牙齿。在1年、3年和5年后对患者进行回访。两个实验组中失败牙齿的比例之间未发现统计学上的显著差异。观察到根折比例（p = 0.029）和龋病比例（p = 0.047）存在显著差异，在5年回访时，用银汞合金修复的牙齿中观察到更多的根折和更少的龋病。在本研究的范围内，可以得出结论，纤维桩和复合树脂修复在预防根折方面比银汞合金更有效，但在预防继发龋方面效果较差。
