Evaluation Of Nasal Morphology In Patients With Vertical Maxillary Excess Before And After Lefort 1 Osteotomy - A Cephalometric Study

Abstract

The aim of this study was to assess the nasal morphology in Vertical maxillary excess patients before and after Le Fort 1 osteotomy and to evaluate the relationship of palatal plane and nasal upward tip angle. Materials and Methods: Pre-treatment and Post-treatment lateral cephalograms of 19 non growing patients with vertical maxillary excess treated with Le Fort 1 osteotomy were obtained and soft and hard tissue Cephalometric measurements were assessed and compared between two groups. Results: Post surgically there was significant decrease in total facial height (N-Me), upper facial height (N-ANS), mandibular plane inclination (GoGn-SN), palatal plane inclination (SN-Pp) and mild decrease in lower anterior facial height (ANS-Me). A significant increase in the angle of inclination (AOI) was observed. Conclusion: The present study showed a positive correlation between Angle of inclination(AOI) and Upper nasolabial angle (UNLA) in patients with vertical maxillary excess which revealed that increased A.O.I of the palatal plane is associated with increased UNLA and can be considered as a diagnostic criteria. But post surgically after Le fort 1 osteotomy, a weak negative correlation between these two parameters revealed that, even though the palatal plane tipped upward, there was a decrease in the Nasolabial angle.