MKI67 and oral cavity squamous cell carcinoma: By comparing the degrees of dysplasia that appeared in the different stages of oral squamous cell carcinoma (OSCC) development, we found that the degree of expression of Ki-67 in the buccal pouch of the hamster that took capsaicin was lower than those in control group, and we found statistically significant differences between its expression in the control group and the study group in all the time periods in which experimental animals were sacrificed.