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- Title
Longitudinal Evaluation of the Intermaxillary Relationship in Class III Malocclusions.
- Authors
Fengshan Chen; Terada, Kazuto; Liping Wu; Saito, Isao
- Abstract
Objective: To analyze the sagittal, vertical, and transverse relationship of the maxilla and mandible in Japanese girls with Class III malocclusions. Materials and Methods: This longitudinal study utilized biannual posteroanterior and lateral cephalograms of 44 untreated subjects from age 8 to 14 years (Class I, 23 girls; Class III, 21 girls). Sagittal and vertical growths were analyzed on the basis of lateral cephalograms, and transverse growth was analyzed on the basis of posteroanterior cephalograms. Results: There was no significant difference in sagittal intermaxillary relationships in Class III malocclusion from age 8 to 14 years, whereas significant difference in vertical and transverse intermaxillary relationships appeared with ages during this period. When comparing Class III to Class I malocclusions at the same age point, there were significant differences in sagittal and transverse intermaxillary relationships, whereas significant difference in vertical intermaxillary relationship appeared after 12 years of age. Conclusion: The results suggest that the sagittal intermaxillary relationships in Class III malocclusions were established before 8 years of age and remained through puberty and that the vertical and transverse intermaxillary relationships in Class III malocclusions changed with ages from 8 to 14 years.
- Subjects
DENTAL occlusion; TEETH abnormalities; PROGNATHISM; JAWS; ORTHODONTICS
- Publication
Angle Orthodontist, 2006, Vol 76, Issue 6, p955
- ISSN
0003-3219
- Publication type
Article
- DOI
10.2319/102005-371