Ashok Kumar Jena1, Vidya Rattan2, Satinder Pal Singh3, Ashok Kumar Utreja3, Singh Sombir3. 1. Department of Dental Surgery, All India Institute of Medical Sciences, Sijua, Dumduma, Bhubaneswar, Odisha India. 2. Unit of Oral and Maxillofacial Surgery, Oral Health Sciences Centre, Post Graduate Institute of Medical Education and Research, Sector-12, Chandigarh, India. 3. Unit of Orthodontics, Oral Health Sciences Centre, Post Graduate Institute of Medical Education and Research, Sector-12, Chandigarh, India.
Abstract
PURPOSE: To test the hypothesis that there is no immediate and long-term effects of maxillary distraction osteogenesis (DO) on nasal index among adult subjects with cleft lip and palate deformities. MATERIALS AND METHODS: Twelve adult subjects in the age range of 17-20 years with complete unilateral cleft lip and palate underwent advancement of maxilla by DO. The immediate and long-term effects of maxillary DO on nasal index were evaluated from extra-oral full face frontal photographs recorded prior to DO (T0), at the end of active DO (T1) and at least 2-years after the DO (T2). The ANOVA, Post Hoc test (Bonferroni) and Pearson correlation coefficients were used. The probability value (P value) 0.05 was considered as statistically significant. RESULTS: SNM angle and Ptm-M distance increased significantly by DO (P < 0.001). The nasal index increased significantly (P < 0.01) by 13.85 % from T0 value of 85.15 ± 4.49 to 99.02 ± 11.16 % at the end of active distraction (T1) and by 12.69 to 97.84 ± 9.14 % at the end of long-term follow-up (T2). The correlation between sagittal maxillary advancement and nasal index was statistically significant (P < 0.001). For each millimeter of maxillary advancement, the nasal index increased by 1.38 % and 1.8 % at the end of active distraction and long-term follow-up respectively. CONCLUSION: The advancement of maxilla by distraction osteogenesis among subjects with cleft lip and palate deformities increased nasal index significantly.
PURPOSE: To test the hypothesis that there is no immediate and long-term effects of maxillary distraction osteogenesis (DO) on nasal index among adult subjects with cleft lip and palate deformities. MATERIALS AND METHODS: Twelve adult subjects in the age range of 17-20 years with complete unilateral cleft lip and palate underwent advancement of maxilla by DO. The immediate and long-term effects of maxillary DO on nasal index were evaluated from extra-oral full face frontal photographs recorded prior to DO (T0), at the end of active DO (T1) and at least 2-years after the DO (T2). The ANOVA, Post Hoc test (Bonferroni) and Pearson correlation coefficients were used. The probability value (P value) 0.05 was considered as statistically significant. RESULTS: SNM angle and Ptm-M distance increased significantly by DO (P < 0.001). The nasal index increased significantly (P < 0.01) by 13.85 % from T0 value of 85.15 ± 4.49 to 99.02 ± 11.16 % at the end of active distraction (T1) and by 12.69 to 97.84 ± 9.14 % at the end of long-term follow-up (T2). The correlation between sagittal maxillary advancement and nasal index was statistically significant (P < 0.001). For each millimeter of maxillary advancement, the nasal index increased by 1.38 % and 1.8 % at the end of active distraction and long-term follow-up respectively. CONCLUSION: The advancement of maxilla by distraction osteogenesis among subjects with cleft lip and palate deformities increased nasal index significantly.
Entities:
Keywords:
Cleft lip and palate; Distraction osteogenesis; Maxillary advancement; Nasal index
Authors: C Asher-McDade; V Brattström; E Dahl; J McWilliam; K Mølsted; D A Plint; B Prahl-Andersen; G Semb; W C Shaw; R P The Journal: Cleft Palate Craniofac J Date: 1992-09