Journal of Dental Research, Vol 57, 209-212, Copyright © 1978 by International & American Associations for Dental Research Online Journals
Incidence of torsiversion in mandibular third molars
E. J. Neiburger
Two percent of 826 adults examined during routine dental check-up visits
show torsiversion in their molars. The degree of rotation ranges from 20
degrees to 60 degrees with the predominant position at 30 degrees buccal.
This condition is quite rare and appears to be genetically directed at the
infracrypt level of development.