[A synthetical mouth study of 105 Uygur people above 100 years of age]

Oral examination was performed in 105 Uygur people aged 100 to 135 years. Among them there were 77 males and 28 females. Results were as follows: the teeth loss rate was 100.0%, edentulous rate 54.3%, dental caries 70.5%, periodontal disease 52.4%, normal labial-buccal mucosa 65.7%, fissured tongue 74.3%, no smoking 86.7%, no drinking 94.3%, and all of them had neither history of dental extration nor restoration. This study may provide data for investigating secret of human longevity.