The significance of the natal eruption of teeth
is not always that of vigor, as many of the subjects succumb
early in life. There were two cases typical of fetal dentition
shown before the Academie de Medecine de Paris. One of the
subjects had two middle incisors in the lower jaw and the other
had one tooth well through. Levison saw a female born with two
central incisors in the lower jaw.
Thomas mentions a case of antenatal development of nine teeth.
Puech, Mattei, Dumas, Belluzi, and others report the eruption of
teeth in the newborn. In Dumas' case the teeth had to be
extracted on account of ulceration of the tongue. Instances of
triple dentition late in life are quite numerous, many occurring
after a hundred years. Mentzelius speaks of a man of one hundred
and ten who had nine new teeth. Lord Bacon cites the case of a
Countess Desmond, who when over a century old had two new teeth;
Hufeland saw an instance of dentition at one hundred and sixteen;
Nitzsch speaks of one at one hundred, and the Ephemerides contain
an account of a triple dentition at one hundred and twenty. There
is an account of a country laborer who lost all his teeth by the
time he arrived at his sixtieth year of age, but about a half
year afterward a new set made their appearance.
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