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Aim To find the relationship of periodontal status and dental caries status with oral health knowledge, attitude, behavior, among professional students in India. Methodology In a cross sectional study, a total of 825 students (males: 577, females: 248) from six professions were surveyed using a self administered structured questionnaire including 41 multiple choice questions and the WHO Oral Health Assessment Form (1997). The data was analyzed using the SPSS version 13.0 to perform the Student's t-test, ANOVA test, Scheffe's test and Chi-square test, linear regression analysis. Results The mean percentage scores of the students forknowledge were 53.25±15.05; for attitude 74.97±20.48; and for behavior 59.09±18.77. The percentage of students with calculus score was found to be significantly high (43.8%). The percentage of professional students with DMFT>4 was 14.1% and the percentage of students with decayed teeth was 46.2%. The regression analysis showed that the oral health behavior of the students was dependent on the attitude (P