The Application of Sagittal Split Ramus Osteotomy for a Patient with Skeletal Class III Whose Younger Brother Had Been Treated to Anterior Crossbite with a Mini-positioner
2001 Volume 21 Issue 3 Pages 323-328
Details
2001 Volume 21 Issue 3 Pages 323-328
The elder sister visited to Showa University Dental Hospital with a complaint of anterior edge to edge bite at the age of 12 years. Her treatment was performed orthognathically because her antero-posterior jaw relation was skeletal class 3. Therefore, her orthodontic treatment could not finish until the age of 22 years, although her facial profile improved after the surgery. She was accompanied by her younger brother of an age 7 years with the chief complaint of the similar anterior crossbite when she visited us for the first time. However, his orthodontic treatment accomplished swiftly with a mini-positioner because of his malocclusion limited to dento-alveolus region.
Lateral cephalograms and pressure sensitive occlusal sheets were used to access the morphological changes including soft tissue profile and the stability of occlusion. Similarly from the previous studies, the ratio of mandibular body length to ramus height (Pog'-Go/Cd-Go) at an age of 12 years slightly exceeded 1.4, the borderline between surgical and non-surgical approach, in this case (sister). Mandibular set back surgery was considered to shorten postsurgical orthodontics and to acquire stable occlusion.
