Operational definitions of mandibular morphogenetic and positional rotations |
| |
Authors: | JEAN LAVERGNE NICOLE GASSON |
| |
Affiliation: | Orthodontic Department, School of Dentistry, Bergen, Norway |
| |
Abstract: | abstract – A material of 30 patients with metallic implants was used in a longitudinal study, based on lateral headplates, of the mandibular rotational pattern. The complexity of the rotational phenomenon in the mandibular rotation has necessitated the proposal of some operational definitions: morphogenetic and positional rotations of the mandible. A relation-ship has been established between the variation of the gonial angle and the variation of both morphogenetic and positional rotations of the mandible. A relationship has been established between the variation of the condylar growth direction and the variation of both morphogenetic and positional rotations of the mandible: this relationship is the strongest when the morphogenetic rotation of the corpus is considered. |
| |
Keywords: | mandible growth and development physiology |
|