title: Maxillary growth in patients with clefts following secondary alveolar bone grafting.
abstract: OBJECTIVE
  This investigation evaluated the effects of secondary alveolar bone grafting on subsequent maxillary growth in cleft patients.
  
  
  METHODS
  This was a retrospective longitudinal cephalometric study. Nineteen patients who had received secondary alveolar bone grafts were matched to a control sample by sex, cleft, availability of longitudinal records, and presurgical cranial base dimensions and growth direction. All patients had at least two lateral cephalometric radiographs before surgery and two radiographs after surgery.
  
  
  METHODS
  The records were obtained from the Longitudinal Growth Study of the Lancaster (Pennsylvania) Cleft Palate Clinic.
  
  
  METHODS
  All patients had received similar primary surgical procedures by the same surgeon, no orthopedics, and similar mixed-dentition orthodontics. Secondary alveolar bone grafting was the only surgical intervention different between the two groups.
  
  
  METHODS
  Six measures of maxillary sagittal and vertical growth were taken from 235 radiographs. Slopes of the regression lines for each growth dimension were compared between groups both pre- and postsurgically.
  
  
  RESULTS
  There were no significant between-group differences in maxillary sagittal or vertical growth following the grafting procedure. Anterior maxillary vertical growth rates decreased in the grafted group when their pre- and postsurgical rates were compared. Several growth trends in the postsurgical period were found to be continuations of the rates documented presurgically and unrelated to the grafting procedure.
  
  
  CONCLUSIONS
  When evaluated longitudinally, maxillary growth in patients having received secondary alveolar bone grafting did not differ from a group of matched controls.
authors.affiliation: Temple University Department of Orthodontics, Philadelphia, Pennsylvania, USA.
authors.forename: T
authors.initials: T
authors.lastname: Levitt
authors.forename: R E
authors.initials: RE
authors.lastname: Long
authors.forename: C A
authors.initials: CA
authors.lastname: Trotman
mesh_terms: D000293:Adolescent; D000539:Alveolar Process / Q000002:abnormalities / Q000000981:diagnostic imaging / Q000601:surgery*; D000704:Analysis of Variance; D016025:Bone Transplantation; D002508:Cephalometry / Q000706:statistics & numerical data; D002648:Child; D002971:Cleft Lip / Q000175:diagnosis / Q000503:physiopathology* / Q000601:surgery; D002972:Cleft Palate / Q000175:diagnosis / Q000503:physiopathology* / Q000601:surgery; D006801:Humans; D008137:Longitudinal Studies; D008437:Maxilla / Q000000981:diagnostic imaging / Q000254:growth & development* / Q000601:surgery; D011859:Radiography; D012086:Reoperation; D012189:Retrospective Studies