[The number of teeth in persons who died within a 5-year period in comparison with survivors]

In reliance on dental records taken in 1965 it was examined whether or not examinees with a higher number of teeth display a better survival rate for the 5 years' periode 1965-1970 than examinees of the same age and sex but with a lower number of teeth; in other words, whether or not, the number of teeth is a suitable index for biological age, at least in the higher age-groups.