Enamel demineralization and influencing factors during orthodontic treatment

LIAO Dan

Abstract：Objective To investigate the incidence of enamel demineralization during orthodontic treatment and influencing factors. Methods One hundred and thirty-eight patients under orthodontic treatment at our hospital between October 2013 and December 2015 were selected as subjects. Clinical data of these patients was collected and the incidence of enamel demineralization was calculated. Multivariate logistic regression analysis was used to analyze the risk factors for enamel demineralization during orthodontic treatment. Results Among the 138 cases of orthodontic treatment, the incidence of enamel demineralization was 21.01%. Gender and disease type were not single factors for enamel demineralization, and the difference was not of statistical significance (P>0.05). Multivariate logistic regression analysis showed that age≥60 years old, anterior teeth area, the use of traditional straight wire appliance, acid etching time≥15 s were risk factors for enamel demineralization in patients under orthodontic treatment (P<0.001). Conclusion Older age, orthodontic treatment of anterior teeth, the use of traditional straight wire appliance and long acid etching can leave patients more vulnerable to enamel demineralization. Prevention and control measures can reduce the incidence of enamel demineralization.