Orthodontic management of the patientundergoing mandibular distraction osteogenesis

The overbite and intraoral mandibular distraction osteogenesis

“…The latter was expected because the ventral movement of Gnathion during lengthening of the mandible could lead to a decrease of this angle. The increase in the MP/SN and SpP/MP angle was expected and confirms other reports (Hanson and McLuhin, 1999).…”

“…The interdental tongue position was also mentioned in the literature (Hanson, 2001). Five patients of this series were referred to a speech therapist for correction of the interdental tongue position and lip relation.…”

“…In addition, skeletal relapse has been reported in distraction patients who had a shorter consolidation period. (Hanson, 2001).…”

“…opening of the bite). Rotation of the distal part of the mandible causes opening of the bite in cases where the stability of the devices is not sufficient (Samchukov et al, 1998;Hanson, 2001). Furthermore, the supra-hyoid muscles can also cause an open bite due to clockwise rotation of the mandible during mandibular lengthening (Van Spronsen et al, 1989;Hoppenreijs et al, 1996).…”

“…Mandibular lengthening to correct residual overjet in patients with a skeletal Angle Class II malocclusion, has also been proposed (van Strijen et al, 1998Breuning et al, 1999;Breuning and van Strijen, 2001), and described in the literature (Hoffmeister and Wangerin, 1997;Diner et al, 1999). Several authors report the development of an open bite during intraoral distraction osteogenesis (Grayson et al, 1997;Hoffmeister et al, 1998;Samchukov et al, 1998;Hanson, 2001). In this study, the long-term results of intraoral distraction osteogenesis of the mandible as part of the orthodontic treatment for patients with an Angle Class II malocclusion are presented.…”