Disabling hearing loss after Lefort I osteotomies in patients with history of Eustachian tube dysfunction: An unknown complication.

Introduction: The aim of this study was to determine the predisposing factors of this deafness after orthognathic surgery for a population with no history of cleft palate.

Material And Methods: All patients with significant auditory symptoms after orthognathic surgery performed in the department of Craniomaxillofacial surgery in the Croix Rousse Hospital, Lyon, France, since 2012 were included in the study. The exclusion criterion was a history of cleft palate.

[The nose, an orthodontic-surgical marker].

Introduction: Inthe quest for a universal marker to describe the physiological function of facialmechanics, the author has found nasal ventilation at rest to be a major factor to beborne in mind.

Materials And Methods: Factors related to embryology, anatomyand respiratory physiology, along with analysis of the literature in the relevantareas, now enable us to view the nose in a different light.

Conclusion: The authorconcludes that nasal ventilation at rest constitutes a mandatory objective in theperformance of all types of therapy.

Bilateral dermoid cysts of the upper lip.

Dermoid cysts are benign tumors found throughout the body. They are either congenital or acquired. Derived from both ectoderm and mesoderm, they are often diagnosed in childhood.

Sensitivity of the inferior lip and chin following mandibular bilateral sagittal split osteotomy using Piezosurgery.

Background: Bimaxillary osteotomy, including bilateral sagittal split osteotomy, is the most commonly performed orthognathic surgical intervention in Europe and the United States. Neurosensory perturbation in the territory of the inferior alveolar nerve is a reported adverse effect of bilateral sagittal split osteotomy. Piezosurgery is a relatively new technique that allows bone to be cut while preserving soft tissues, including nerves.