Abstract
The purpose of this study was to evaluate the effects of teeth loss on emotional behavior. In this study, we performed a locomotor activity test and emotional behavior test using aged rats with extracted molar teeth and non-extracted aged rats as controls. The locomotor activity for 24 hrs of the teeth loss group was reduced significantly compared to the control group.The emotional behavior test showed emotional behavior changes in the molar teeth extracted group.These results show that teeth loss aged rats had an accessory symptom of senile dementia, and thus we conclude that long term teeth loss is one of the causal factors of dementia.
