Gontijo Leonardo, Cruz Roberval de Almeida, Brandão Paulo Roberto Gomes
School of Dentistry, Pontifical Catholic University of Minas Gerais, Belo Horizonte, MG, Brazil.
Braz Dent J. 2007;18(1):49-53. doi: 10.1590/s0103-64402007000100011.
Poor oral hygiene has been considered one of the main problems routinely faced in the orthodontic treatment. Orthodontic appliance creates an environment that provides mineral loss from the dental enamel. Such condition is clinically seen as white spot lesions and cavitations in the most severe cases. The aim of this study was to evaluate the effects of a fluoride varnish application as a caries prevention method for clinical orthodontics. The experiment analyzed dental enamel adjacent to orthodontics accessories after treatment. In addition, it was observed the calcium, phosphorus and fluoride contents on enamel treated with a fluoride varnish. The results showed that fluoride varnish application is a simple and fast technique that could be useful in preventing enamel demineralization associated to orthodontic treatment. Scanning electron microscopy revealed significant amount of calcium fluoride-like material deposited on enamel and energy dispersive x-ray analysis demonstrated a large incorporation of calcium and fluoride to the enamel of the treated specimens. It was concluded that fluoride varnish could indeed be considered an efficient preventive method to enhance enamel resistance against the cariogenic challenges during orthodontic therapy.
口腔卫生状况不佳一直被视为正畸治疗中经常面临的主要问题之一。正畸矫治器营造了一种导致牙釉质矿物质流失的环境。这种情况在临床上最严重时表现为白斑病变和龋洞。本研究的目的是评估应用氟化物漆作为临床正畸学中预防龋齿方法的效果。该实验分析了治疗后正畸附件附近的牙釉质。此外，还观察了用氟化物漆处理的牙釉质中的钙、磷和氟含量。结果表明，应用氟化物漆是一种简单快捷的技术，在预防与正畸治疗相关的牙釉质脱矿方面可能有用。扫描电子显微镜显示牙釉质上沉积了大量类似氟化钙的物质，能量色散X射线分析表明处理后的标本牙釉质中大量掺入了钙和氟。得出的结论是，氟化物漆确实可被视为一种有效的预防方法，可增强正畸治疗期间牙釉质对致龋挑战的抵抗力。
