Incidence of torsiversion in mandibular third molars.
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.
D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000453:epidemiology* / Q000235:genetics; D008875:Middle Aged; D008963:Molar; D013997:Time Factors; D014078:Tooth Eruption; D014481:United States