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首页> 外文期刊>Journal of dentistry >Microleakage and SEM evaluation of fissure sealants placed by use of self-etching priming agents.
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Microleakage and SEM evaluation of fissure sealants placed by use of self-etching priming agents.

机译：通过使用自蚀刻灌注剂放置的裂隙密封剂的微透架和SEM评估。

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Objectives. This study evaluated the microleakage and internal seal of fissure sealants placed by use of self-etching priming agents in comparison to phosphoric acid etching of enamel.Methods. Seventy-two caries-free extracted human molars were divided into six groups with 12 teeth each. Occlusal surfaces were cleansed by either pumicing (Groups I, III, V) or by 15-s air-abrasion treatment with 25 microm aluminum oxide particles (Groups II, IV, VI). Fissures were sealed with the self-etching priming systems, Clearfil Liner Bond 2 (Groups I, II) or Resulcin AquaPrime (Groups III, IV). In Groups V and VI, sealants were placed after phosphoric acid etching. Half of the teeth in each group were thermocycled. After staining with 0.5% methylene blue, the teeth were sectioned for evaluation of microleakage. Internal adaptation of the fissure sealants was analyzed by SEM on replicas of cross sections.Results. Independent of the methods used for cleansing of the occlusal surfaces, fissure sealants in Groups I and II showed significantly more microleakage and less sufficient internal seal as compared to sealants placed in Groups III to VI. Sealants placed by Resulcin AquaPrime (Groups III, IV) leaked significantly more than sealants applied after phosphoric acid etching (Groups V, VI) of the enamel. However, statistical analysis (H-test) did not reveal significant differences concerning the internal adaptation of sealants placed in Groups III, IV, V and VI.Conclusions. Concerning the microleakage data, use of the self-etching bonding systems, Clearfil Liner Bond 2 and Resulcin AquaPrime, cannot be recommended for fissure sealing, since the sealing ability is less effective as compared to the conventional acid-etching technique.
机译：目标。本研究评估了通过使用自蚀刻引发剂的裂缝密封剂的微漏和内部密封，与Enamel的磷酸蚀刻相比。方法。将七十二龋提取的人臼齿分成6组，每个牙齿12颗粒。用25微米氧化铝颗粒（II，IV，IV，VI）的含量溶解（基团I，III，V）或15-S空气磨损处理清洁咬合表面。用自蚀刻引发系统密封裂缝，ClearFil衬垫键2（II，II组）或resulcin Aquaprime（III组，IV组）。在v和Vi组中，磷酸蚀刻后置于密封剂。每组中的一半牙齿是热循环的。用0.5％亚甲基蓝染色后，牙齿被切割用于评价微渗透。通过SEM在横截面的复制品上进行裂缝密封剂的内部调整。结果。与用于清洁咬合表面的方法无关，与在III组中置于VI的密封剂相比，I和II组中的裂缝密封剂显着更明显更大的微透视和更少的内部密封。通过Resulcin Aquaprime（III组，IV组，IV）放置的密封剂显着泄漏多于搪瓷磷酸蚀刻（v，Vi）后施加的密封剂。然而，统计分析（H-TEST）没有揭示关于置于III，IV，V和VI和VI.Conclusions组中的密封剂内部适应的显着差异。关于微透盖数据，不能推荐使用自蚀刻粘合系统，清除衬里键2和簧序Aquaprime，因为与传统的酸蚀刻技术相比，密封能力不太有效。

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