Consideration of Maxillary Skeletal Expansion (MSE) and Mandibular Symphyseal Distraction Osteogenesis (MSDO)
The role of the transverse maxillomandibular dimension (TMMD) in OSA is not fully understood, but recent reports appear to confirm that normalizing TMMD may assist in the treatment of OSA .Bimaxillary transverse distraction osteogenesis for correction of OSA was first reported by Conley & Legan (2006). Mandibular symphyseal distraction osteogenesis (MSDO) evolve form tooth anchor device to bone anchor device for a better control of the distraction segment in the 3 planes of space. Its success depends on good collaboration between the orthodontist and the surgeon, and on strict patient selection. Throughout case reports, we will review the diagnosis, orthodontic and surgical treatment planning considerations to achieve clinical success. These cases illustrate that patients may benefit from just increasing the TMMD alone, or both TMMD and anteroposterior measurements, if they experience snoring and OSA. TMMD followed by bimaxillary advancement, when indicated, might be more effective than maxillomandibular advancement alone.
- Diagnose patient with transverse mandibular deficiency
2. Understand the distraction protocol
3. Manage the postdistraction orthodontic movement - In July 2016: I visited Mont Blanc with my wife and daughter Vanessa where she made me take a tandem parapente.
2. In July 2018: I hiked in South Tyroll near Merano and wrongly took the most difficult pathway.
3. In July 2019: I walked, with my wife, the Hadrian wall in the UK from Wylam to Carlisle. Then, I went to Scotland, Fort William to hike Ben Nevis Mountain in memory of my daughter Vanessa and visit Skye Island.
Dr. Sylvain Chamberland received his DMD degree from Laval University in 1983, a Certificate in Orthodontics from University of Montreal in 1990 and a Master degree in dental science in 2008 from University Laval. He has lectured in several graduate programs in orthodontics and scientific meetings in the US, Canada and Europe, and has published articles about SARPE, genioplasty, condylar resorption, combined treatment SARPE & MSDO. He conducts an active clinical practice, is a Diplomate of the American Board of Orthodontics, a Fellow of the Royal College of Dentist of Canada and a member of the EHASO.
Dr Chamberland is in private practice in Quebec city, PQ, Canada.