Transverse dento-skeletal relationships and third molar impaction.
D002508:Cephalometry; D003724:Dental Arch / Q000033:anatomy & histology*; D006801:Humans; D008334:Mandible / Q000033:anatomy & histology*; D008963:Molar / Q000033:anatomy & histology*; D009811:Odontometry; D014078:Tooth Eruption; D014095:Tooth, Impacted / Q000209:etiology*