CAJ | 학술논문

目的比较3种树脂粘接剂与牙齿粘接界面的微裂隙,以期为临床提供参考.方法收集15颗人离体第三恒磨牙,用随机数字表随机分为3组(每组5颗),颊侧备洞后,分别用全酸蚀粘接剂(3M ESPE Adper Single Bond 2)(A组)、双组分自酸蚀粘接剂(3M ESPE Adper SE Plus)(B组)和单组分自酸蚀粘接剂(iBond Self Etch)(C组)进行粘接,树脂充填.扫描电镜下定点测量充填体侧壁、底壁与牙体间的微裂隙宽度,所有试样经3000次冷热循环后再次测量.使用秩和检验比较3组组间差异和冷热循环前后差异.结果冷热循环后各组侧壁或底壁的微裂隙宽度均比冷热循环前显著增加(P＜0.05),冷热循环前后A、B、C组侧壁或底壁微裂隙宽度增加量[侧壁:1.33(1.14,1.74)、1.27(1.04,1.86)、1.11(0.55,1.46) μm；底壁:2.22(1.36,2.50)、1.91 (1.48,2.88)、2.38(2.08,2.47) μm]差异无统计学意义(P＞0.05).结论 3种树脂粘接剂对牙齿粘接性能的影响无差异；冷热循环可破坏粘接界面的稳定性.
목적 비교3충수지점접제여아치점접계면적미렬극,이기위림상제공삼고.방법 수집15과인리체제삼항마아,용수궤수자표수궤분위3조(매조5과),협측비동후,분별용전산식점접제(3M ESPE Adper Single Bond 2)(A조)、쌍조분자산식점접제(3M ESPE Adper SE Plus)(B조)화단조분자산식점접제(iBond Self Etch)(C조)진행점접,수지충전.소묘전경하정점측량충전체측벽、저벽여아체간적미렬극관도,소유시양경3000차랭열순배후재차측량.사용질화검험비교3조조간차이화랭열순배전후차이.결과 랭열순배후각조측벽혹저벽적미렬극관도균비랭열순배전현저증가(P＜0.05),랭열순배전후A、B、C조측벽혹저벽미렬극관도증가량[측벽:1.33(1.14,1.74)、1.27(1.04,1.86)、1.11(0.55,1.46) μm；저벽:2.22(1.36,2.50)、1.91 (1.48,2.88)、2.38(2.08,2.47) μm]차이무통계학의의(P＞0.05).결론 3충수지점접제대아치점접성능적영향무차이；랭열순배가파배점접계면적은정성.
Objective To evaluate the interface microgap between resin adhesive and teeth.Methods Single-sided cavities were prepared on buccal surface of 15 freshly extracted molars.Then the molars were randomly divided into 3 groups.In each group,the cavities were restored with 3M Z250,and bonded with one of the three types of adhesives:total etch adhesive 3M ESPE Adper Single Bond 2 (A group),two-component self-etching adhesive 3M ESPE Adper SE Plus(B group),and one-component self-etching adhesive iBond Self Etch(C group).The interface microgap at side wall and bottom of the cavities on the prosthesis middle section were observed and measured using Phenom proX scanning electron microscopy (SEM).After all the samples were subjected to thermal cycling (3000 times,5-55 ℃),measurement procedures were conducted again.Results After thermal cycling,the microgap became significantly larger in each group (P ＜ 0.05).There was no statistical difference among the increase of specific width in A group,B group and C group [sidewall:1.33 (1.14,1.74),1.27 (1.04,1.86),1.11 (0.55,1.46) μm;bottom wail:2.22 (1.36,2.50),1.91 (1.48,2.88),2.38 (2.08,2.47) μm] (P ＞ 0.05).Conclusions Different bonding agents have no different teeth bonding properties.Thermal cycling has negative effect on the stability of adhesive interface.