title: Location and presence of permanent teeth in a complete bilateral cleft lip and palate population.
abstract: OBJECTIVE
  To describe the location and presence of permanent teeth in nonsyndromic complete bilateral cleft lip and palate patients from the Manitoba Centre for Craniofacial Difference.
  
  
  METHODS
  Records of 1570 patients dating back to 1958 were assessed in this retrospective chart review.
  
  
  RESULTS
  Thirty-eight patients met the inclusion criteria, providing 76 cleft site teeth: A tooth on each side of the cleft was considered to have developed from a single lateral incisor tooth bud. The pattern M was assigned when a tooth was found mesial to the cleft, D when distal, MD when mesial and distal and AB if none was found. Pattern M was noted 9.2% of the time; D, 47.4%; MD, 5.3%; and AB, 38.2%. Teeth outside the cleft site: In the maxilla, agenesis occurred in 11.9% of second premolars and 10.5% of central incisors. In the mandible, agenesis occurred in 4.0% of second premolars, 2.6% of lateral incisors, 2.6% of central incisors, and 2.6% of second molars.
  
  
  CONCLUSIONS
  The lateral incisor was most commonly found distal to the cleft. Agenesis of the lateral incisor and teeth outside the cleft were more common than in noncleft populations.
authors.affiliation: Department of Preventive Dental Science, University of Manitoba, Winnipeg, Canada. Richard_Halpern@Hotmail.com
authors.forename: Richard Michael
authors.initials: RM
authors.lastname: Halpern
authors.forename: James
authors.initials: J
authors.lastname: Noble
mesh_terms: D000293:Adolescent; D000328:Adult; D000848:Anodontia / Q000150:complications; D001641:Bicuspid / Q000002:abnormalities; D002648:Child; D002675:Child, Preschool; D002971:Cleft Lip / Q000145:classification / Q000150:complications*; D002972:Cleft Palate / Q000145:classification / Q000150:complications*; D005260:Female; D006801:Humans; D007180:Incisor / Q000002:abnormalities / Q000473:pathology; D008297:Male; D008963:Molar / Q000002:abnormalities; D012189:Retrospective Studies; D014070:Tooth / Q000473:pathology*; D014071:Tooth Abnormalities / Q000150:complications*; D014083:Tooth Germ / Q000473:pathology; D014096:Tooth, Supernumerary / Q000150:complications; D055815:Young Adult