The correction of maxillomandibular dysmorphoses, responsible for both functional discomfort (lip incompetence, ventilation disorders, periodontal disease) but also aesthetic, calls in particular for genioplasty, of which there are several techniques. One of these chin repositioning techniques, called "Chin Wing", cuts the bone to optimize the functional and aesthetic result. While all genioplasty techniques expose the risk of nerve damage and lack of bone consolidation, these parameters are only rarely addressed in the literature in the specific context of this extensive bone cutting.

The objective of this work is to assess the satisfaction of patients who have benefited from chin advancement surgery using the "Chin Wing" technique.

Inclusion Criteria:

• Major subject (≥ 18 years old)
• having undergone "Chin Wing" type genioplasty surgery in the maxillofacial surgery department of Strasbourg between October 1, 2012 and June 30, 2022.
• Subject who has not expressed his opposition to the reuse of his data for scientific research purposes.

Exclusion Criteria:

• Subject having expressed their opposition to the reuse of their data for scientific research purposes

Major subject (≥ 18 years old) having undergone "Chin Wing" type genioplasty surgery in the maxillofacial surgery department of Strasbourg between October 1, 2012 and June 30, 2022.