title: Long-term outcome of secondary alveolar bone grafting in patients with various types of cleft.
abstract: OBJECTIVE
  To evaluate the results of secondary alveolar bone grafting in patients with various types of cleft.
  
  
  METHODS
  One hundred and seventy patients were classified as cleft lip and alveolar process alone (CLAP), complete unilateral cleft lip and palate (UCLP), and complete bilateral cleft lip and palate (BCLP). The Bergland criteria were used to assess the long-term outcome of alveolar bone grafting.
  
  
  RESULTS
  In the UCLP and BCLP groups, the success rate was significantly better (P<0.05) when the cleft was grafted before the eruption of canines. When the operation was done after the eruption of canines, there was a significant difference in the success rate between CLAP and BCLP (P<0.05).
  
  
  CONCLUSIONS
  The timing of the operation was the critical variable that affected the outcome in patients with complete cleft lip and palate. The severity of the deformity influenced the success rate when alveolar bone grafting was done after the eruption of canines.
authors.affiliation: Department of Orthodontics, School of Stomatology, Peking University, Beijing 100081, China. yljia2000@yahoo.com
authors.forename: Y L
authors.initials: YL
authors.lastname: Jia
authors.forename: M K
authors.initials: MK
authors.lastname: Fu
authors.forename: L
authors.initials: L
authors.lastname: Ma
mesh_terms: D000293:Adolescent; D000328:Adult; D000539:Alveolar Process / Q000002:abnormalities / Q000000981:diagnostic imaging / Q000601:surgery*; D016025:Bone Transplantation / Q000009:adverse effects / Q000379:methods*; D016009:Chi-Square Distribution; D002648:Child; D002972:Cleft Palate / Q000000981:diagnostic imaging / Q000601:surgery*; D003481:Cuspid; D005260:Female; D006801:Humans; D007085:Ilium / Q000637:transplantation; D008297:Male; D011859:Radiography; D012189:Retrospective Studies; D013997:Time Factors; D014078:Tooth Eruption; D016896:Treatment Outcome