5th International Conference on Dermatology, Cosmetology and Plastic Surgery

Usman Ahmed a specialist orthodontist with internationally recognised postgraduate qualifications from the Royal College of Surgeons of Edinburgh, the College of Physicians and Surgeons Pakistan, and the Royal College of Surgeons in Ireland. Following completion of his postgraduate fellowship training, he served for three years as an Assistant Professor at Foundation University, Islamabad, where he gained extensive clinical experience in the management of complex orthodontic cases and contributed to the education and training of postgraduate orthodontic trainees. He currently practises within Specialist Oral Health Services at Queensland Children’s Hospital, Brisbane, providing specialist orthodontic care for patients with cleft lip and palate and complex dentofacial deformities. His clinical practice focuses particularly on the multidisciplinary management of such patients requiring comprehensive orthodontic care

First-premolar extraction with maximum incisor retraction is widely used in orthodontic treatment; however, its effects on pharyngeal airway dimensions and hyoid bone position remain inconclusive. This study aimed to evaluate the effects of this treatment approach on pharyngeal airway dimensions and hyoid bone position. A retrospective study was conducted on 33 patients with Class I skeleton and dental relationships having bimaxillary proclination who underwent extraction of all four first premolars with maximum anchorage. Pretreatment and post-treatment lateral cephalograms were digitally analyzed to assess pharyngeal airway dimensions and hyoid bone position. Within the limitations of this study, four first premolar extractions with maximum anterior retraction were associated with reduced pharyngeal airway dimensions and inferior displacement of the hyoid bone. These findings underscore the importance of considering potential upper-airway effects when planning extensive incisor retraction, particularly in patients with risk factors for sleep-related breathing disorders.