“…However, due to the strong social tendency to preserve natural teeth in old age 5,10,28 , the proportion of people aged 75 and overusing full dentures has significantly decreased from 78.6% in 1979 to 35.7% in 2005 12 . Epidemiological studies indicate that individuals with lower social class or income and minimal or no education have a higher likelihood of tooth loss compared to those with higher social class, income and education levels 7,10,25 . Relatively fewer epidemiological studies on older people tooth loss have been conducted in developing countries 7 .…”