用酪蛋白磷酸肽无定形磷酸钙（CPPACP）、氟保护漆和含氟磷酸凝胶预处理后正畸托槽剪切粘结强度的比较评估：一项体外研究。
Comparative Evaluation of Shear Bond Strength of Orthodontic Brackets on Pretreatment with CPPACP, Fluor Protector and Phosflur: An In-vitro Study.
作者信息
Mishra Sumita
机构信息
Senior Lecturer, Department of Orthodontics, Institute of Dental Sciences , Sector-8, Kalinganagar, Ghatikia, Bhubaneswar-751030, Odisha, India .
出版信息
J Clin Diagn Res. 2014 May;8(5):ZC01-5. doi: 10.7860/JCDR/2014/7702.4312. Epub 2014 May 15.
OBJECTIVE
The purpose of this study is to evaluate bond strength, bracket tooth interface of Orthodontic brackets that are bonded for fixed Orthodontic treatment procedure on pretreatment with CPPACP, Fluor Protector and Phosflur. The goal is to assess the adhesive remnants following application of these remineralizing agents using Adhesive Remnant Index.
MATERIALS AND METHODS
Two hundred freshly extracted premolar teeth each divided into Control, CPP-ACP, Fluor Protector and Phosflur. Teeth were pretreated with these agents prior to bonding procedure. Shear Bond Strength was tested using a Universal Testing Machine. A jig was attached to upper jaw of the machine. The acrylic block containing the embedded teeth was secured in the lower jaw of the machine such that the bracket base of the teeth parallel the direction of the shear force at a crosshead speed of 1 mm/minute until bracket failure. The force required to dislodge the bracket was recorded.
RESULTS
Mean Shear bond strength value is highest for Phosflur (15.3658 ± 2.4546 ) followed by Fluor Protector , CPP-ACP and lowest for Control (7.0462 ± 0.8838 MPa).
CONCLUSION
Phosflur, Fluor protector,CPP-ACP have comparable Shear bond strength values in comparison to control.
目的
本研究的目的是评估在固定正畸治疗程序中，使用酪蛋白磷酸肽无定形磷酸钙（CPPACP）、氟保护漆和氟磷灰石预处理后粘结的正畸托槽的粘结强度和托槽与牙齿的界面情况。目标是使用粘结剂残留指数评估这些再矿化剂应用后的粘结剂残留情况。
材料与方法
将200颗新鲜拔除的前磨牙均分为对照组、CPP-ACP组、氟保护漆组和氟磷灰石组。在粘结程序之前，用这些试剂对牙齿进行预处理。使用万能试验机测试剪切粘结强度。在试验机的上颚连接一个夹具。将含有嵌入牙齿的丙烯酸块固定在试验机的下颚，使牙齿的托槽底座与剪切力方向平行，以1毫米/分钟的十字头速度直至托槽脱落。记录使托槽脱落所需的力。
结果
氟磷灰石的平均剪切粘结强度值最高（15.3658±2.4546），其次是氟保护漆、CPP-ACP，对照组最低（7.0462±0.8838兆帕）。
结论
与对照组相比，氟磷灰石、氟保护漆、CPP-ACP具有相当的剪切粘结强度值。
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