A DIGITAL ANALYSIS OF UPPER MIDDLE AND LOWER PHARYNGEAL AIRWAY CHANGES AFTER ORTHOGNATHIC SURGERIES
Journal Title: Journal of Advanced Medical and Dental Sciences Research - Year 2017, Vol 5, Issue 4
Abstract
Purpose: The aim of the study was to investigate changes in the upper middle and lower pharyngeal airway space with maxillary and mandibular advancement and setback after LE FORT I osteotomy and Bilateral sagittal split osteotomy procedures. Patients and Methods: A retrospective study on 46 patients underwent various orthognathic surgeries including 18 men and 28 women was performed in Department of oral and maxillofacial surgery, Sibar Institute of dental sciences, Guntur. Lateral cephalogramsof the patients were collected pre operatively and one year post operatively. Digital measurements of upper, middle and lower pharyngeal airway including AP min. was performed anteroposteriorly using SIDEXIS software. The data was calculated and analyzed using SPSS ver. 20 software. Results: In 46 patient the collected data was divided according to the procedures i.e. maxillary and mandibular advancement, setback and vice versa. The maximum age was 50 years and minimum age was 16 years with a mean of 22.6 years.11 patient underwent maxillary advancement, 18 setback and 8 patients with mandibular advancement, 9 underwent setback. In advancement procedures 2mm increase in the upper pharyngeal airway was found in the patients with maxillary procedure and 1.6mm in middle airway, 1.02mm in lower airway with mandibular procedures. In setback procedures there was a decrease of 2.19mm in the upper airway and 1.18mm decrease in the middle airway with maxillary procedures and decrease of 1.37mm in middle airway and 1.03mm in lower airway with the mandibular procedures. Anteroposterior minimum also follows the simultaneous pattern of advancement and setback. Conclusion: Pharyngeal airway is a delicate structure which should always be handled carefully. Our study suggests that the orthognathic procedures performed are directlyproportional to the changes in the pharyngeal airway. So before planning the treatment surgeon must carefully screen the patient to avoid the complications and to get a better outcome.
Authors and Affiliations
Meka Sridhar, Rahul VC Tiwari, Vijay Kumar Thumpala, Ravi Teja Painam, Madhav Rao Thumati, Anand Vijay Somuri
Keywords
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