摘要
目的研究应用CEREC全瓷嵌体对楔状缺损牙的修复效果并测试修复后抗折裂性能。方法将因正畸治疗拔除的离体牙分成对照组与实验组(n=16),分别制备成模拟楔状缺损牙。其中实验组用CERECCAD/CAM全瓷嵌体修复;对照组用光固化树脂充填。然后在万能试验机上测试每组牙的抗折裂性能,并记录最大载荷。比较各实验组与对照组的抗折强度的差别。结果用CEREC全瓷嵌体修复的离体模拟楔状缺损牙(3.56±0.27)抗折强度明显高于对照组(2.43±0.15)(P<0.01)。结论 CEREC全瓷嵌体可以有效修复楔状缺损牙,防止其受力折断。
Objective To study the effect of CEREC CAD/CAM ceramic inlay on repair of wedge-shaped defects of teeth and test its anti-fracture properties. Methods Extracted teeth were divided into control group （ n = 16） and experimental group （ n = 16） ,and prepared into imitating teeth with wedge-shaped defects. Teeth in experimental and control groups were repaired with CEREC CAD/CAM ceramic inlay and light-cured composite resin,respectively. Anti-fracture strength of teeth with wedge-shaped defects repaired with CEREC CAD/CAM was assayed on a universal testing device with its maximal loading recorded. The anti-fracture strength was compared between the 2 groups. Results The anti-fracture strength of teeth with wedge-shaped defects repaired with CEREC CAD/CAM ceramic inlay was significantly higher in experimental group than in control group （ 3. 56 ± 0. 27 vs 2. 43 ± 0. 15,P 0. 01）. Conclusion CEREC CAD/CAM ceramic inlay can effectively repair wedge-shaped defects of teeth.
出处
《第三军医大学学报》
CAS
CSCD
北大核心
2010年第11期1210-1212,共3页
Journal of Third Military Medical University
