Abstract: Objective To explore the correlation between oral hygiene habits and oral carcinogenesis. Methods "Oral Cancer Risk Factors Questionnaire" was carried out for 109 oral cancer patients and 109 healthy normal control patients. Data was analyzed to sieve the independent influence factors with OR and 95% confidence intervals. Results The difference of brushing tooth index of oral health group and oral cancer group(4.37±1.85 vs 3.26±2.16) was significant(t=4.076, P=0.000). The difference of regular supragingival scaling rate between two groups(4.6% vs 18.3%) was significant(χ²=10.166, P=0.001). The difference of denture comfort rate between two groups(77.2% vs 59.1%), also was significant(χ²= 3.825, P=0.050). By using binary Logistic regression, the independent influence factors were brushing tooth index, OR=0.776, 95%CI for OR(0.673, 0.895) and regular supragingival scaling, OR=0.255, 95%CI for OR(0.091, 0.721). Conclusion Oral hygiene habits can affect the incidence of oral cancer.

Key words: oral cancer, oral hygiene habits, questionnaire