Nakamoto Ayako, Ikeda Masaomi, Hiraishi Noriko, Nikaido Toru, Uo Motohiro, Tagami Junji
Cariology and Operative Dentistry, Oral Restitution Department, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.
Oral Prosthetic Engineering, Graduate School, Tokyo Medical and Dental University, Tokyo Medical and Dental University.
Dent Mater J. 2018 Nov 30;37(6):919-927. doi: 10.4012/dmj.2017-370. Epub 2018 Jul 12.
The purpose of this study was to evaluate the effect of fluoride mouthrinses on dentin bonding performance of a two-step selfetch adhesive; Clearfil SE Bond. Bovine root dentin surface was treated with either 450, 900, or 9,000 ppm F solutions for 30 s (immediate), and continually treated for one month (one month) before the bonding procedures. Microtensile bond strength (µTBS) test and scanning electron microscopic (SEM) observation of the acid-base resistance zone (ABRZ) were performed. Chemical state of fluorine on dentin surface was analyzed by X-ray absorption fine structure (XAFS). The 450 and 900 ppm F fluoride mouthrinses did not influence the µTBS to dentin, while the 9,000 ppm F fluoride solution adversely affected the µTBSs. The fluoride application to dentin significantly enhanced acid resistance at the adhesive/dentin interface including the ABRZ. The XAFS analysis indicated different concentrations of fluoride might create different chemical compounds on the dentin surface, influencing the µTBS results.
本研究的目的是评估含氟漱口水对两步自酸蚀粘结剂Clearfil SE Bond牙本质粘结性能的影响。牛牙根牙本质表面分别用450、900或9000 ppm的氟溶液处理30秒（即刻），并在粘结操作前持续处理1个月（1个月）。进行了微拉伸粘结强度（µTBS）测试和耐酸碱区（ABRZ）的扫描电子显微镜（SEM）观察。通过X射线吸收精细结构（XAFS）分析牙本质表面氟的化学状态。450和900 ppm的含氟漱口水对牙本质的µTBS没有影响，而9000 ppm的氟溶液对µTBS有不利影响。向牙本质施加氟显著增强了包括ABRZ在内的粘结剂/牙本质界面的耐酸性。XAFS分析表明，不同浓度的氟可能在牙本质表面形成不同的化合物，从而影响µTBS结果。
