The association between anterior crossbite, deep bite and temporomandibular joint morphology validated by magnetic resonance imaging in an adult non-patient group.
Ann Anat
; 194(4): 339-44, 2012 Jul.
Article
en En
| MEDLINE
| ID: mdl-21646004
ABSTRACT
The aim of this study was to determine whether associations exist between anterior edge-to-edge bite, anterior crossbite, deep bite and morphology of the temporomandibular joint (TMJ) in the vertical dimension, evaluated by magnetic resonance imaging (MRI) in adults. A total of 148 subjects (90 females, 58 males) were selected from the cross-sectional epidemiological population-based study "Study of Health in Pomerania" (SHIP) for this evaluation. In each person a clinical orthodontical examination was performed. Four linear measurements and one ratio from MRI scans of the TMJs were evaluated. To estimate the effects of anterior edge-to-edge bite, anterior crossbite and deep bite on TMJ variables, linear regression was applied. (Analyses were adjusted for sex, age, school education, and orthodontic treatment.) Anterior edge-to-edge-bite/crossbite had shorter mean eminence heights (eh) on both joint sides (p<0.01). In deep bite without gingival contact the postglenoid process height (pgph) decreased significantly in left joints (p=0.018) and there was a tendency to a decrease in right joints (p=0.059). The ratio between eminence height and postglenoid process height (eh/pgph) was increased on both left (p<0.001) and right (p=0.002) joints. In conclusion, anterior edge-to-edge-bite/crossbite is connected to a reduced eminence height and deep bite without gingival contact with an increased ratio between eminence height and postglenoid process height. Therefore the condylar path in the anterior edge-to-edge bite and crossbite cases can be interpreted to be reduced and in the deep bite cases without gingival contact to be steepened.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Imagen por Resonancia Magnética
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Trastornos de la Articulación Temporomandibular
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Sobremordida
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Maloclusión
Tipo de estudio:
Diagnostic_studies
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Prevalence_studies
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Risk_factors_studies
Límite:
Adult
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Aged
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Female
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Humans
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Male
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Middle aged
País/Región como asunto:
Europa
Idioma:
En
Revista:
Ann Anat
Asunto de la revista:
ANATOMIA
Año:
2012
Tipo del documento:
Article
País de afiliación:
Alemania