摘要
目的比较自酸蚀、全酸蚀黏接剂和玻璃离子水门汀在Ⅱ类洞充填修复中的边缘微渗漏。方法30颗离体上颌前磨牙随机分为三组(n=10),均于近中或远中面制备长方体型Ⅱ类洞型(4.0 mm×3.5 mm×2.5 mm),分别选用自酸蚀黏接剂+纳米树脂(自酸蚀组)、全酸蚀黏接剂+纳米树脂(全酸蚀组)和玻璃离子水门汀(玻璃离子组)进行充填修复。经200次和500次冷热循环后行0.5%碱性品红染色,体视显微镜下观测各充填修复体轴壁和龈壁的微渗漏,并进行统计学分析。结果组间比较显示,自酸蚀组微渗漏深度显著大于全酸蚀组和玻璃离子组(P<0.01)。组内比较显示,龈壁微渗漏深度显著大于轴壁(P<0.01);与冷热循环200次相比,冷热循环500次时各组轴壁和龈壁的微渗漏深度均明显增加(P<0.01)。结论在Ⅱ类洞充填修复中,自酸蚀、全酸蚀黏接剂黏接修复及玻璃离子水门汀均存在边缘微渗漏,而以自酸蚀黏接剂黏接修复及修复体龈壁的微渗漏较为明显,其程度随冷热循环次数而增加。
Objective To evaluate the influence of self-etch adhesive, total-etch adhesive and glass ionomer cement on the marginal microleakage of class Ⅱ restorations. Methods Thirty human premolars were randomly divided into 3 groups （ n = 10） , and cuboid class Ⅱ cavities （4.0 mm × 3.5 mm×2.5 mm） were prepared. Restoration was performed using selfetch adhesive ＋ nano-resin （ self-etch group） , total-etch adhesive ＋ nano-resin （ total-etch group） or glass ionomer cement （ glass ionomer group）. Half of each group underwent 200 thermocyclings and the other half underwent 500 thermocyclings. The specimens were immersed in 0.5% basic fuchsin for staining. Each tooth was then evaluated the microleakage at the axial wall and the gingival wall section by section under a stereomicroscope. The data were statistically analyzed. Results Self-etch group had significantly more miroleakage than total-etch group and glass ionomer group after 200 and 500 thermocyclings（ P 〈 0.01 ）. The micreoleakage of axial wall was less than that of gingival wall （P 〈0.01 ）. Compared with that of 200 thermocyclings, the microleakage on both axial and gingival wall of 500 thermocyclings increased significantly （P 〈0.01 ）. Conclusion There exists marginal microleakage in class Ⅱ restorations by self-etch adhesive, total-etch adhesive and glass ionomer cement. There is less microleakage in the axial wall than the gingival wall. The thermocycling influences the microleakage of both axial and gingival wall along with the cycles.
出处
《上海交通大学学报（医学版）》
CAS
CSCD
北大核心
2008年第10期1254-1257,共4页
Journal of Shanghai Jiao tong University:Medical Science
基金
上海市教委基金(06BZ047)~~
关键词
微渗漏
冷热循环
黏接剂
体外
mieroleakage
thermocycling test
adhesives
in vitro
