Effect of Thermo-mechanical Load Cycling on Microleakage in Class II Ormocer Restorations
Effect of Thermo-mechanical Load Cycling on Microleakage in Class II Ormocer Restorations
复制标题
热机械负载循环对 II 类 Ormocer 修复体微渗漏的影响
DOI：
10.1055/s-0039-1697432
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发表时间：
2009
影响因子：
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通讯作者：
Yavuz Gomeç
中科院分区：
文献类型：
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作者：
D. Erdi̇lek;C. Dörter;F. Koray;K. Kunzelmann;B. Efes;Yavuz Gomeç
目的本体外研究的目的是评价在研究设计中同时使用热循环和载荷循环程序时，与混合复合材料相比，ormocer的边缘密封能力。方法在22颗前磨牙近中、远中面制备改良II类洞型。每颗牙齿都用Admira修复，对侧用TPH Spectrum修复。所有牙齿的一半经受热机械负载循环。染料渗透后，制备近远中纵向切片，并在立体显微镜下进行检查。数据用Mann Whitney U检验进行分析。结果与非热循环组和非热循环组相比，Admira（P=0.006）和TPH Spectrum（P=0.023）材料在热机械载荷循环下的牙龈微渗漏均显著增加。结论在体外评价牙龈微渗漏时，同时进行负荷循环和热循环是决定性因素，即使使用Ormocer系统Admira，牙龈微渗漏仍是一个临床问题。
Objectives The objective of this in vitro study was to evaluate the marginal sealing ability of an ormocer in comparison with a hybrid composite when using thermocycling and load cycling procedures together in the study design. Methods Modified proximal Class II cavities were prepared on the mesial and distal surfaces of twenty-two human premolars. Each tooth was restored with Admira and contralaterally with TPH Spectrum. Half of all of the teeth were subjected to thermo-mechanical load cycling. After dye penetration, longitudinal sections in mesio-distal direction were prepared and examined under a stereomicroscope. Data were analyzed with Mann Whitney U test. Results The results showed that the thermo-mechanical load cycling caused a statistically significant increase in gingival microleakage when compared with the non-thermocycled and non-loaded restorations for both the materials Admira (P=0.006) and TPH Spectrum (P=0.023). Conclusions Simultaneous load cycling and thermocycling are decisive factors in the in vitro assessment of gingival microleakage, which still remains to be a clinical problem even with the ormocer system Admira.
Kubo S、Yokota H、Yokota H、Hayashi Y：“新型粘合系统的粘合强度和微渗漏，2001 年日本冈山粘合牙科论坛的现代粘合牙科会议记录（Yoshiyama M、Nishitani Y、Nakabo S、Cox C）
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