The problem of determining a subject's age to ascertain whether he can
be criminally charged brings to prominence all-the methods of investi
gation which can be used to define a person's biological age. The meth
odologies used to determine dental age still represent today the most
sensitive means of arriving at this end. Researchers in Turin in 1980
elaborated an equational formula to determine a subject's presumable a
ge by means of orthopantomography, basing the examination on the miner
alization times of 4.5, 4.7, 4.8. After thorough checks carried out on
sample groups of urban inhabitants, it was noted that the phases of m
ineralization of the 3rd molar can provide an answer to the judicial a
uthorities' query as to whether the subject in question has come of ag
e. The phase of mineralization of the 3rd molar is evaluated according
to the table we have proposed during a previous conference and in ano
ther paper, which establishes 12 phases of mineralization. Focusing ou
r attention on the final 12th phase, corresponding to the complete min
eralization of the tooth roots, it was noted that this was present in
93 subjects, of whom 43 male and 50 female. A check of the personal da
ta of these subjects revealed that for the male group age was between
6875 and 9396 days (between 18 years 10 months and 25 years 9 months),
whereas for the female group age was between 6711 and 9275 days (betw
een 18 years 4 months and 25 years 5 months). In other words, none of
the subjects was found to be under 18 years of age.