A study of enamel demineralization related to bonded orthodontic bracket and improved method of enamel demineralization: in vivo study

Son, Han Sin; Lee, Dong Joo

Abstract

The purpose of this study was to evaluated the improve method of demineralization and damage on the enamel stufece related to bonded orthodontic bracket. Enamel surface of the 40 Intact premolars were treated by acid etching and various fluoride application methods and then maintained in the patient mouth of 3 months. After extraction of all the sampled premolars, enamel surfaces were evaluated by Scanning electron microscope. The obtained results were as follow. 1. Enamel surface relate to bonded orthodontic bracket showed demineralization and damage, slightly. 2. Group 6 treated by 2% NaF iontophoresis presented and almost similarity to normal enamel surface. 3. Group 2 treated by acid etching had demineralization and damage on the enamel surface much more than other groups treated by various fluoride application methods. 4. Demineralization and damage on the enamel surface caused by bonded orthodontic bracket is improved by various fluoride application methods.