Esthetic outcome and airway evaluation following Bi-Jaw surgery V/S mandibular setback surgery in skeletal class III malocclusion using surgery first approach
| Autor: | Prashanth Cs, Akshai Shetty, Bushra Kanwal, Sharmila Arjunan, Varghese Mani, KM Pramod |
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| Rok vydání: | 2018 |
| Předmět: |
Class III skeletal deformity
Cephalometric analysis medicine.medical_specialty Jaw Surgery medicine.medical_treatment bi-jaw surgery 03 medical and health sciences Orthognathic Surgical Procedures 0302 clinical medicine stomatognathic system Airway changes medicine 030212 general & internal medicine Reduction (orthopedic surgery) business.industry Original Article - Retrospective Study mandibular setback surgery Soft tissue 030206 dentistry medicine.disease surgery-first approach Surgery stomatognathic diseases Oral Surgery Malocclusion soft tissue Beta angle business Airway |
| Zdroj: | Annals of Maxillofacial Surgery |
| ISSN: | 2231-0746 |
| DOI: | 10.4103/ams.ams_152_18 |
| Popis: | Background: Class III skeletal deformity is the result of mandibular prognathism, maxillary deficiency, or a combination. Treatment frequently requires a combination of orthodontics and orthognathic surgical procedures to improve facial esthetics and harmonize facial profile. Objectives: The objective of the study is to assess and quantify, by means of cephalometric analysis, the pre- and postoperative soft-tissue and airway changes following bi-jaw surgery and mandibular setback surgery after the correction of skeletal Class III deformities using surgery- first approach. Materials and Methods: Patients with skeletal Class III malocclusion were classified based on the A point–nasion–B point, beta angle, and Witt's appraisal. The cases were divided based on the type of surgery- first orthognathic approach they received. Group A (20 patients) comprised patients who underwent bi-jaw surgery (Le Fort I + bilateral sagittal split osteotomy [BSSO]) and Group B (20 patients) who underwent BSSO alone. After the lateral cephalograms were digitized, the cephalograms were evaluated for soft-tissue changes and airway changes. Results: The soft-tissue response to simultaneous two-jaw surgery was superior to those seen in mandibular setback procedures with the exception of the changes seen in the facial contour angle and soft-tissue facial angle. There was a significant decrease in lower airway in cases treated with mandibular setback alone. Conclusion: Cases treated with bi-jaw surgeries had a significant soft-tissue improvement in the long term compared to mandibular setback surgeries. Since there was a significant reduction in the lower airway in cases treated with isolated mandibular surgeries, bi-jaw surgeries maybe preferred over mandibular setback surgeries. |
| Databáze: | OpenAIRE |
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