摘要
目的探讨不同前牙牙本质领圈高度对LUXACORE树脂桩核折断和脱落发生率的影响。方法选取100颗有缺损的前牙,按照牙本质领圈高度分为3组,A组牙本质领圈高度小于等于1mm,B组高度大于1mm,小于等于2mm,C组高度大于2mm,进行LUXACORE树脂桩核及烤瓷全冠修复。修复后6～24个月追踪观察桩核的折断率和脱落率,进行统计学分析。结果在折断率发生方面,B、C组明显低于A组,差异均有统计学意义(P<0.05),而B、C两组间差异无统计学意义(P>0.05);在脱落发生率方面,A组脱落率最高,C组最低,3组之间差异无统计学意义(P>0.05)。总体上,折断率和脱落率分别为8%和5%,修复成功率达87%。结论在前牙缺损修复中,足够牙本质领圈可以有效提高LUXACORE树脂桩核修复的抗力和固位。
Objective To study the influence of dentin collar height on the retention and resistance of LUXACORE resin post in anterior teeth defect cases. Methods 100 anterior teeth were divided into three groups. All teeth with dentin collar height less than 1 mm were in group A. Those with dentin collar height between 1 and 2 mm were in group B. Those with more than 2 mm were in group C. Each tooth was restored with LUXACORE resin post and porcelain fused to metal crown. The fracture rate and falling rate were evaluated 6 - 24 months after clinical service. Results There was statistical difference between group A and group B in fracture rate （P 〈 0.05）; And we can also found the magnificent difference between group A and group C （P 〈 0.05）. But there was no difference between group B and group C （P 〉 0.05）. The falling rate in group A was larger than that in group B and C. And the difference could not be found between group A, B, C （P 〉 0.05）. On the whole, the falling rate and fracture rate could reach to 5% and 8% respectively, and the success rate achieved to 87%. Conclusion Enough dentin collar was very necessary to improve the retentive force and resisitance of LUXACORE resin post in anterior teeth defect cases.
出处
《中华口腔医学研究杂志（电子版）》
CAS
2009年第1期35-37,共3页
Chinese Journal of Stomatological Research(Electronic Edition)
关键词
牙本质领圈
弹性模量
固位
抗力
Dentin collar
Elastic modulus
Retention
Resistance
