Effect of three bonding adhesives on the orthodontic bracket loss rate in treating moderate and severe dental fluorosis / 中国组织工程研究

ABSTRACT

BACKGROUND: Because of the special structure of enamel fluorosis, the traditional bonding adhesives often lower the bonding strength and increase bracket loss rate, which affected the therapeutic effects seriously.OBJECTIVE: To observe the clinical bracket loss rate differences among the 3 different bonding adhesives in treating moderate and severe dental fluorosis.METHODS: A total of 15 cases (total 288 teeth) with dental fluorosis were selected, including 6 males and 9 females, aged 13-26 years. All cases were randomly divided into 3 groups, and treated by using Beijing-Tianjin enamel adhesive bonding brackets,photo-curing-flowable Resin + Single Bond 2 adhesive bonding brackets and a small amount of dental fluorosis of enamel surfaces were ground and bonding bracket, the loss rate of brackets were observed.RESULT AND CONCLUSION: The total loss rates of the Beijing-Tianjin-enamel adhesive bonding bracket group, photo-curing flowable resin + Single Bond 2 adhesive bonding bracket group, and a small amount of dental fluoresis of enamel surfaces were ground and bonding bracket group were 65.6%, 20.5%, and 2.5%, respectively. There was significant difference in bracket loss rate among bonding adhesives (P< 0.01). It suggested that a small amount of surface enamel were ground and bonding bracket got the best effect, followed by photo-curing fiowable resin + Single Bond 2 adhesive bracket bonding group, both of them were significantly better than the Beijing-Tianjin-enamel adhesive bracket bonding group. Because veneering directly requires to grind part of the tooth structure which is difficult to accept for some patients, therefore, under the premise of not destroying the tooth structure, using photo-curing fiowable resin + Single Bond 2 adhesive bonding of brackets instead of the traditional Beijing-Tianjin enamel adhesive bonding of brackets can effectively reduce the loss rate of brackets for moderate and severe dental fluorosis.