Fontanari Lucas Amaral, Pinto Shelon Cristina Souza, Cavassim Rodrigo, Spin-Neto Rubens, Ishi Eduardo de Paula, Sampaio José Eduardo Cezar
Department of Oral Diagnosis and Surgery, Araraquara Dental School, Univ Estadual Paulista, Araraquara, SP, Brazil.
Braz Dent J. 2011;22(6):479-85. doi: 10.1590/s0103-64402011000600007.
Although in vitro studies have shown encouraging results for root surface conditioning with demineralizing agents, in vivo studies have failed to show its benefits in periodontal healing. This can be attributed to several factors, among which, the hypermineralization of dental surface. Therefore, this in vitro study compared, using scanning electron microscopy (SEM), the effect of root surface conditioning with different conditioners (1% and 25% citric acid, 24% EDTA and 50 mg/mL tetracycline hydrochloride) in impacted teeth and in teeth that had their roots exposed to the oral environment. One trained examiner assessed the SEM micrographs using a root surface modification index. There was a tendency of more root surface modification in the group of impacted teeth, suggesting that the degree of root mineralization influences its chemical demineralization.
尽管体外研究显示用脱矿剂进行根面处理取得了令人鼓舞的结果，但体内研究未能表明其在牙周愈合中的益处。这可归因于几个因素，其中包括牙面的过度矿化。因此，这项体外研究使用扫描电子显微镜（SEM）比较了不同调节剂（1%和25%柠檬酸、24%乙二胺四乙酸和50mg/mL盐酸四环素）对阻生牙和牙根暴露于口腔环境的牙齿进行根面处理的效果。一名经过培训的检查者使用根面改性指数评估SEM显微照片。阻生牙组有更多根面改性的趋势，表明根矿化程度影响其化学脱矿。
