首页> 外文期刊>Angle Orthodontist >Shear bond strength evaluation of bonded molar tubes on fluorotic molars
【24h】

Shear bond strength evaluation of bonded molar tubes on fluorotic molars

机译:氟橡胶磨牙上粘结磨牙管的剪切粘结强度评估

获取原文
获取原文并翻译 | 示例

摘要

Objective: To study the shear bond strength (SBS), sites of failure, and micromorphology of bonded molar tubes used on teeth affected by dental fluorosis. Materials and Methods: This in vitro study included 140 first molars classified according to Dean's index for dental fluorosis. Samples were divided into seven groups: (1) healthy teeth etched for 15 seconds, (2) teeth with moderate fluorosis (MOF) etched for 15 seconds, (3) teeth with MOF etched for 150 seconds, (4) teeth with MOF microabrasion etched for 15 seconds, (5) teeth with severe fluorosis (SEF) etched for 15 seconds, (6) teeth with SEF etched for 150 seconds, and (7) teeth with SEF microabrasion etched for 15 seconds. All samples were incubated and were then submitted to the SBS test and evaluated with the modified adhesive remnant index (ARI) and analyzed by using a scanning electronic microscope. Results: The SBS mean value for healthy enamel was 20 ± 10.2 MPa. For the group with MOF, the etched 150-second mean value was the highest (19 ± 7.6 MPa); for the group with SEF treated with microabrasion and etched for 15 seconds, the mean value was (13 ± 4.1 MPa). Significant differences (P ≤ .05) were found in the ARI between healthy and fluorosed groups. Conclusions: Fluorotic enamel affects the adhesion of bonded molar tubes. The use of overetching in cases of MOF and the combination of microabrasion and etching in SEF provides a suitable adhesion for fixed appliance therapy.
机译:目的:研究氟牙症影响牙齿的剪切力强度(SBS),破坏部位和粘结磨牙管的微观形态。材料和方法:这项体外研究包括140个第一磨牙,根据迪恩氏氟中毒指数进行了分类。样本分为7组:(1)健康牙齿蚀刻15秒,(2)中度氟中毒(MOF)蚀刻15秒,(3)MOF蚀刻150秒,(4)MOF微磨牙蚀刻15秒钟,(5)蚀刻严重氟中毒(SEF)的牙齿蚀刻15秒钟,(6)蚀刻SEF的牙齿蚀刻150秒,以及(7)蚀刻15秒钟的SEF微磨蚀牙齿。孵育所有样品,然后进行SBS测试,并使用改良的粘合剂残留指数(ARI)进行评估,并使用扫描电子显微镜进行分析。结果:健康牙釉质的SBS平均值为20±10.2 MPa。对于具有MOF的组,蚀刻的150秒平均值最高(19±7.6 MPa);对于SEF进行微磨损处理并蚀刻15秒的组,平均值为(13±4.1 MPa)。健康组和含氟组之间的ARI差异有统计学意义(P≤.05)。结论:氟搪瓷会影响结合的磨牙管的粘附。在MOF中使用过度蚀刻以及在SEF中使用微研磨和蚀刻相结合为固定矫治器疗法提供了合适的附着力。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号