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Objective: To measure the changes in orthodontically induced white spot lesion size , using 18% hydrochloric acid microabrasion & 37% orthophosphoric acid microabrasion techniques. Materials & Methods: Patients who had developed multiple white demineralised enamel lesions on teeth after post fixed orthodontic therapy were treated in this study. The study consisted of 20 patients, 10 patients in 18% hydrochloric acid (HCl) microabrasion group and 10 patients in 37% orthophosphoric acid microabrasion group. Both the groups underwent micro abrasion once in a week for a month i,e. four times in 1 month period. The area of the white spot lesions decreased significantly in both the groups. The success rate for both the group were calculated. Result: There was statistically significant decrease of white spot lesion before and after treatment in 18% hydrochloric acid microabrasion group and 37% orthoposphoric acid microabrasion group. Statistics: Statistical analysis was performed using Statistical Package for Social Sciences (SPSS) version 14. Conclusion: As the day progressess the size of white spot lesion reduces, microabrasion technique is one of the best known method to treat white spot lesion & using 18%hcl gives better result when compared to 37% H3Po4.

iosr journal of dental and medical sciences

Comparing the Treatment of white Spot Lesions Using 18% Hydrochloric Acid (HCL) Microabrasion &amp; 37% Orthophosphoric Acid (H3po4) Microabrasion Techniques