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Trabecular bone structures in the edentulous diastema of osteoporotic sheep.

Identifieur interne : 005E48 ( Main/Exploration ); précédent : 005E47; suivant : 005E49

Trabecular bone structures in the edentulous diastema of osteoporotic sheep.

Auteurs : G. Dvorak [Autriche] ; R. Gruber ; C D Huber ; J. Goldhahn ; G. Zanoni ; D. Salaberger ; G. Watzek ; R. Haas

Source :

Journal of dental research [ 0022-0345 ] ; 2008.

RBID : pubmed:18719215

Descripteurs français

KwdFr :
- Animaux, Densité osseuse (physiologie), Diastème, Femelle, Maxillaire (anatomopathologie), Maxillaire (physiologie), Mise en charge, Modèles animaux de maladie humaine, Mâchoire partiellement édentée (anatomopathologie), Ostéoporose (), Ostéoporose (anatomopathologie), Ostéoporose (physiopathologie), Ovis, Vieillissement (physiologie).
MESH :
- anatomopathologie : Maxillaire, Mâchoire partiellement édentée, Ostéoporose.
- physiologie : Densité osseuse, Maxillaire, Vieillissement.
- physiopathologie : Ostéoporose.
- Animaux, Diastème, Femelle, Mise en charge, Modèles animaux de maladie humaine, Ostéoporose, Ovis.

English descriptors

KwdEn :
- Aging (physiology), Animals, Bone Density (physiology), Diastema, Disease Models, Animal, Female, Jaw, Edentulous, Partially (pathology), Maxilla (pathology), Maxilla (physiology), Osteoporosis (chemically induced), Osteoporosis (pathology), Osteoporosis (physiopathology), Sheep, Weight-Bearing.
MESH :
- chemically induced : Osteoporosis.
- pathology : Jaw, Edentulous, Partially, Maxilla, Osteoporosis.
- physiology : Aging, Bone Density, Maxilla.
- physiopathology : Osteoporosis.
- Animals, Diastema, Disease Models, Animal, Female, Sheep, Weight-Bearing.

Abstract

The edentulous ovine diastema represents a suitable region for implantological research. Due to distinctive embryonic origin and mechanical loading, the edentulous diastema may respond differently to osteoporosis than tooth-bearing areas. To test this assumption, we subjected geriatric sheep to ovariectomy, calcium-/vitamin-D-restricted diet, and methylprednisolone administration. Adult control sheep remained untreated. Structural parameters and bone mineral density were determined by microcomputed tomography and conventional computed tomography, respectively. We report that the trabecular microstructure in the diastema was preserved from catabolic changes. In contrast, the premolar maxillary region of osteoporotic sheep had diminished trabecular bone mineral density, with the corresponding structural deteriorations. These results suggest that maxillary trabecular bone of the edentulous diastema does not respond to catabolic changes which occur in the tooth-bearing area in osteoporosis. Our findings imply that regional anatomic domains must be considered in the planning of pre-clinical studies, taking osteoporotic changes into account.

DOI: 10.1177/154405910808700918
PubMed: 18719215

Affiliations:

Autriche

Le document en format XML

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<front><div type="abstract" xml:lang="en">The edentulous ovine diastema represents a suitable region for implantological research. Due to distinctive embryonic origin and mechanical loading, the edentulous diastema may respond differently to osteoporosis than tooth-bearing areas. To test this assumption, we subjected geriatric sheep to ovariectomy, calcium-/vitamin-D-restricted diet, and methylprednisolone administration. Adult control sheep remained untreated. Structural parameters and bone mineral density were determined by microcomputed tomography and conventional computed tomography, respectively. We report that the trabecular microstructure in the diastema was preserved from catabolic changes. In contrast, the premolar maxillary region of osteoporotic sheep had diminished trabecular bone mineral density, with the corresponding structural deteriorations. These results suggest that maxillary trabecular bone of the edentulous diastema does not respond to catabolic changes which occur in the tooth-bearing area in osteoporosis. Our findings imply that regional anatomic domains must be considered in the planning of pre-clinical studies, taking osteoporotic changes into account.</div>
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Trabecular bone structures in the edentulous diastema of osteoporotic sheep.

Trabecular bone structures in the edentulous diastema of osteoporotic sheep.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

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