Clinical and Cephalometric Changes in Long-face Patients With Retrogenia Following the Novel B-genioplasty Technique

Abstract

Background: The chin plays a fundamental role in facial attractiveness. Accordingly, several surgical procedures have been proposed for chin contouring. This study aimed to introduce “B-genioplasty” as a novel genioplasty technique and assess the clinical and cephalometric changes in long-face patients with retrognathia following the novel B-genioplasty. Methods: This is a cross-sectional study. Subjects with class I occlusion increased lower facial height and retrognathia underwent B-genioplasty in this prospective experimental study. Soft and hard tissue cephalometric measurements were made, and the depth of the notch in the lower border of the mandible was measured on lateral cephalograms at 6 months postoperatively and compared with baseline. Patient satisfaction with the outcome was also assessed. Results: Seventeen subjects were studied. Ten (58%) patients underwent rhinoplasty plus genioplasty. All patients were satisfied with the outcome. The step/notch in the lower border of the mandible was not detected in clinical examination in any patient. The mean notch depth was 0.5±0.83 mm on lateral cephalograms. The change in all soft and hard tissue cephalometric parameters was significant at 6 months postoperatively compared with baseline (P<0.001 for all). Conclusion: B-genioplasty caused satisfactory clinical and cephalometric changes in long-face patients with retrognathia, including prevention of step/notch in the inferior border of the mandible, significant reduction of gonial angle, correction of the mandibular plane, and reduction of lower facial height.

Fusion Analyser: a novel measurement method and software tool for dental model analysis in orthodontics

“…In various fields, researchers are dedicated to the development and validation of novel measurement tools and methodologies [24,25,35]. In recent years, rapid advancements in medical digital technology have also significantly transformed traditional orthodontic treatments using high-quality, affordable diagnostic tools [3,5,12,34,36]. The increase in digital tooth models in orthodontic model analysis, invisible appliance design, and oral prosthesis production has spurred considerable innovation in this field [18,23,30].…”