Journal of AdvancedMedical and Dental Sciences Research

Background: Areas around metal brackets are difficult to clean and are prone to the adhesion of bacteria and debris, whereas in the case of orthodontic bands, biofilm formation occurs mostly at the gingival margin, leading to periodontal inflammation. Decreased pH and higher lactobacillus and Streptococcus mutans count increase the susceptibility to caries. Hence; the present study was undertaken for assessing the effect of fixed orthodontic treatment on salivary pH. Materials & methods: A total of 20 patients scheduled to undergo orthodontic treatment were enrolled. Complete demographic details of all the patients were obtained. Clinical and radiographic details were also recorded separately. The pH values were measured with portable pH meter strips at the same four time points. Measurement of pH was done at baseline, 6 weeks post initiation of fixed orthodontic treatment, 12 weeks post initiation of fixed orthodontic treatment, and 18 weeks post initiation of fixed orthodontic treatment. Results: Mean pH at baseline, 6 weeks post initiation of fixed orthodontic treatment, 12 weeks post initiation of fixed orthodontic treatment, and 18 weeks post initiation of fixed orthodontic treatment was found to be 7.22, 6.79, 6.71 and 6.68 respectively. While analyzing statistically, significant results were obtained. Conclusion: There is a decrease in salivary pH during the course of fixed orthodontic treatment predisposing for the development of dental caries. Key words: Orthodontic treatment, pH