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人们长期争论关于脱钙的特殊原因,这种脱钙是经常在长时间装有带环的病人环上遇见的;在正畸带环下面和其周围脱钙是很重要的问题。最近临床研究也指出,低浓度的氟化亚锡(SnF_20.1%)在减少龋齿方面是具有很高疗效的。该研究有两个目的。一个是测量正畸病
It has long been debated the particular cause of decalcification, which is often encountered on rings of patients that have been strapped for extended periods of time; decalcification below and around the orthodontic belt loop is a significant issue. Recent clinical studies have also pointed out that low concentrations of stannous fluoride (SnF_20.1%) have a high efficacy in reducing dental caries. This research has two purposes. One is to measure orthodontics