南非黑人15歲就生智齒，德國人18，19歲左右。日本人20歲左右。
Comparative study on the effect of ethnicity on wisdom
tooth eruption
A. Olze & P. van Niekerk & T. Ishikawa & B. L. Zhu &
R. Schulz & H. Maeda & A. Schmeling
Received: 6 October 2006 /Accepted: 23 March 2007
# Springer-Verlag 2007
Abstract The current knowledge base for evaluating the
influence of ethnic origin on wisdom tooth eruption is still
inadequate. We therefore analyzed and compared the chronology
of wisdom tooth eruption in three ethnic populations—German,
Japanese, and black South African—based
on evidence from 2,482 conventional orthopantomograms.
The investigated German population ranked in the middle
in terms of the age of wisdom tooth eruption. The black
South African population was the fastest and the Japanese
population the slowest in terms of reaching the respective
eruption stages. Population-specific reference data should
be used when evaluating wisdom tooth eruption for the
purpose of forensic age estimation.
