Reduction of the compact and cancellous bone substances of the edentulous mandible caused by resorption. 1992

C Ulm, and P Solar, and R Blahout, and M Matejka, and H Gruber
Department of Oral Surgery, Dental School, University of Vienna, Austria.

Examination of various bone sections of edentulous atrophic mandibles showed that the body of the mandible loses up to 60% of its original bone substance during progressive atrophy. Most of the bone loss occurs in a relatively early stage of the atrophic process. The greatest extent of bone reduction can be observed in the area of the second premolar and the first molar. In the interforaminal region, which is situated mesial from them, resorption, in most cases, is not as progressive as in the premolar/molar area. The compact and cancellous bone substances are most often equally affected by resorption. Moreover, it could be observed that the cancellous bone substance of extremely atrophic mandibles particularly in the interforaminal region, is marked by a significant increase in density. This might be interpreted as a restructuring process to compensate for bone losses and to secure the stability of the atrophic body of the mandible.

UI MeSH Term Description Entries
D007575 Jaw, Edentulous The total absence of teeth from either the mandible or the maxilla, but not both. Total absence of teeth from both is MOUTH, EDENTULOUS. Partial absence of teeth in either is JAW, EDENTULOUS, PARTIALLY. Edentulous Jaw,Edentulous Jaws,Jaws, Edentulous
D008297 Male Males
D008334 Mandible The largest and strongest bone of the FACE constituting the lower jaw. It supports the lower teeth. Mylohyoid Groove,Mylohyoid Ridge,Groove, Mylohyoid,Grooves, Mylohyoid,Mandibles,Mylohyoid Grooves,Mylohyoid Ridges,Ridge, Mylohyoid,Ridges, Mylohyoid
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D015519 Bone Density The amount of mineral per square centimeter of BONE. This is the definition used in clinical practice. Actual bone density would be expressed in grams per milliliter. It is most frequently measured by X-RAY ABSORPTIOMETRY or TOMOGRAPHY, X RAY COMPUTED. Bone density is an important predictor for OSTEOPOROSIS. Bone Mineral Content,Bone Mineral Density,Bone Densities,Bone Mineral Contents,Bone Mineral Densities,Density, Bone,Density, Bone Mineral
D016301 Alveolar Bone Loss Resorption or wasting of the tooth-supporting bone (ALVEOLAR PROCESS) in the MAXILLA or MANDIBLE. Alveolar Resorption,Bone Loss, Alveolar,Bone Loss, Periodontal,Periodontal Bone Loss,Periodontal Resorption,Alveolar Bone Atrophy,Alveolar Process Atrophy,Alveolar Bone Atrophies,Alveolar Bone Losses,Alveolar Process Atrophies,Alveolar Resorptions,Bone Atrophies, Alveolar,Bone Atrophy, Alveolar,Bone Losses, Periodontal,Periodontal Bone Losses,Periodontal Resorptions,Resorption, Alveolar,Resorption, Periodontal,Resorptions, Alveolar

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