According to a novel finding from this study where we identified two types of perceived
barriers (physical and psychological), there was a meaningful reverse relationship between
the psychological section and the desirable behavior but not between the perceived physical
barriers and the desirable behavior. One score reduction in the perceived psychological
barriers increased the possibility of desirable behavior more than two times. The relationship
between the perceived barriers (without classification) and the desirable behavior change has
been confirmed in various studies [11-15,18], although some studies did not support this
finding [16,17]. As noted by several investigators, the perceived barriers are the most
important predictors of behaviors in the HBM [8]. Therefore, one might argue that reducing
barriers could be one of the best strategies to encourage oral self-care [11].