The Cleft palate-craniofacial journal : official publication of the American Cleft Palate-Craniofacial Association · 2010
Effect of alveolar bone grafting on nasal morphology, symmetry, and nostril shape of patients with unilateral cleft lip and palate.
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Sander Melissa, Daskalogiannakis John, Tompson Bryan, Forrest Christopher
Аннотация
OBJECTIVE: To evaluate nasal morphology, symmetry, and nostril shape in patients with unilateral cleft lip and palate following mixed-dentition alveolar bone grafting.
DESIGN: Prospective stereophotogrammetric study.
SETTING: Hospital-based.
PATIENTS: Thirty-nine patients with a history of repaired unilateral cleft lip and palate who received an iliac crest alveolar bone graft were recruited prospectively to participate in the study. Each patient served as his/her own control.
INTERVENTIONS: Partial facial impressions of all patients were acquired before and a minimum of 6 months after the alveolar bone grafting procedure. Image acquisition and analysis of the casts constructed from these models were carried out using three-dimensional stereophotogrammetry.
MAIN OUTCOME MEASURES: Surface-based registrations and linear measurements were performed to assess nasal morphology and nostril shape. A modified Procrustes technique was used to determine the change in nasal symmetry. A two-tailed, paired t test and an analysis of covariance were used to assess statistical significance.
RESULTS: Significant side-to-side asymmetry exists in the nasal region of patients with unilateral cleft lip and palate, both before and after alveolar bone grafting. No significant changes were observed between pre-alveolar bone graft and post-alveolar bone graft images based on linear measurements, asymmetry scores, and registrations. Gender and surgeon were not significant factors.
CONCLUSION: Under the conditions of this study, mixed-dentition alveolar bone grafting appears to have no significant long-term effect on nasal morphology, symmetry, or nostril shape.
DESIGN: Prospective stereophotogrammetric study.
SETTING: Hospital-based.
PATIENTS: Thirty-nine patients with a history of repaired unilateral cleft lip and palate who received an iliac crest alveolar bone graft were recruited prospectively to participate in the study. Each patient served as his/her own control.
INTERVENTIONS: Partial facial impressions of all patients were acquired before and a minimum of 6 months after the alveolar bone grafting procedure. Image acquisition and analysis of the casts constructed from these models were carried out using three-dimensional stereophotogrammetry.
MAIN OUTCOME MEASURES: Surface-based registrations and linear measurements were performed to assess nasal morphology and nostril shape. A modified Procrustes technique was used to determine the change in nasal symmetry. A two-tailed, paired t test and an analysis of covariance were used to assess statistical significance.
RESULTS: Significant side-to-side asymmetry exists in the nasal region of patients with unilateral cleft lip and palate, both before and after alveolar bone grafting. No significant changes were observed between pre-alveolar bone graft and post-alveolar bone graft images based on linear measurements, asymmetry scores, and registrations. Gender and surgeon were not significant factors.
CONCLUSION: Under the conditions of this study, mixed-dentition alveolar bone grafting appears to have no significant long-term effect on nasal morphology, symmetry, or nostril shape.