Comparison of facial morphology in two populations with complete unilateral cleft lip and palate from two different centers.
OBJECTIVE
To identify differences in craniofacial morphology of two populations with a history of complete unilateral cleft lip and palate (UCLP) treated under different protocols.


METHODS
Retrospective longitudinal cohort study.


METHODS
Cleft Center of the University of Nijmegen, The Netherlands, and the Cleft Lip and Palate Program, The Hospital for Sick Children, Toronto, Canada.


METHODS
Nineteen patients (16 male, 3 female) from Nijmegen and 19 patients (16 male, 3 female) from Toronto. Each patient was matched for sex and age with a patient from the other group. The mean ages at which lateral cephalometric radiographs were available for the Nijmegen group were 5.5, 9.9, and 18.3 years, while for the Toronto group these were available at mean ages of 5.3, 10.1, and 18.3 years, respectively. Eighteen patients from the Nijmegen group received an alveolar bone graft at a mean age of 9.5 years (range 8.2 to 13.5 years). None of the patients from Toronto received bone grafts.


METHODS
Eighteen cephalometric variables per radiograph were calculated at each time registration, using Dentofacial Planner cephalometric software. Statistical evaluation was performed with repeated-measures analysis of variance.


RESULTS
No differences were seen in the maxillary measurements. The patients in the Toronto group had significantly larger mandibles at all three time registrations.


CONCLUSIONS
The Nijmegen and Toronto protocols resulted in similar maxillary projections in patients with UCLP. Comparison of data from other studies supports the contention that the larger profile convexity of the Nijmegen group is a reflection of a genetically determined smaller mandibular size in the Dutch population.
Daskalogiannakis
John
J
The Hospital for Sick Children, Toronto, Canada. john.daskalogiannakis@sickkids.ca
Dijkman
Gabriëlle E H M
GE
Kuijpers-Jagtman
Anne Marie
AM
Ross
R Bruce
RB
D000293:Adolescent; D000704:Analysis of Variance; D016025:Bone Transplantation; D002508:Cephalometry; D002648:Child; D002675:Child, Preschool; D002971:Cleft Lip / Q000473:pathology* / Q000601:surgery; D002972:Cleft Palate / Q000150:complications / Q000473:pathology* / Q000601:surgery; D015331:Cohort Studies; D005147:Facial Bones / Q000033:anatomy & histology; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008312:Malocclusion, Angle Class II / Q000150:complications / Q000235:genetics; D008334:Mandible / Q000254:growth & development*; D008445:Maxillofacial Development / Q000235:genetics; D009426:Netherlands; D009864:Ontario; D011300:Preoperative Care; D063173:Retrognathia / Q000150:complications / Q000235:genetics; D012189:Retrospective Studies