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Operational definitions of mandibular morphogenetic and positional rotations
Author(s) -
LAVERGNE JEAN,
GASSON NICOLE
Publication year - 1977
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1111/j.1600-0722.1977.tb00552.x
Subject(s) - mandible (arthropod mouthpart) , rotation (mathematics) , gonial angle , variation (astronomy) , condyle , orthodontics , medicine , biology , mathematics , geometry , physics , genus , surgery , radiography , botany , astrophysics
– 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.