title: Buccolingual inclination of first molars in untreated adults: A CBCT study.
abstract: OBJECTIVE
  To evaluate the buccolingual inclinations of maxillary and mandibular first molars in untreated adults.
  
  
  METHODS
  Fifty-nine subjects (14 males and 45 females; mean age, 41.2 years) with no missing teeth, no crossbite, and minimal crowding were included. For each subject, a CBCT was taken. The long axis of each first molar was determined, and the inclination of each molar was measured using the long axis and the floor.
  
  
  RESULTS
  One hundred seventeen out of 118 mandibular first molars measured had a lingual inclination, with a mean of 12.59° ± 5.47°. For the maxillary first molars, 107 out of 118 had a buccal inclination, with a mean of 4.85° ± 4.22°.
  
  
  CONCLUSIONS
  There is a curvature to the inclinations of first molars in untreated adults, where the maxillary molars have a slight buccal inclination and mandibular molars have a slight lingual inclination.
authors.forename: Rola
authors.initials: R
authors.lastname: Alkhatib
authors.forename: Chun-Hsi
authors.initials: CH
authors.lastname: Chung
mesh_terms: D000328:Adult; D054893:Cone-Beam Computed Tomography; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000000981:diagnostic imaging; D008334:Mandible / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D008437:Maxilla / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D008963:Molar / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D009811:Odontometry
keywords: Buccolingual inclination; CBCT; Untreated adults