Bone Volume in Human Temporomandibular Autopsy Joints with and Without Erosive Changes

Lennart Flygare Department of Oral Radiology, Institute for Postgraduate Dental Education, Jönköping, Sweden; Department of Oral Radiology and Department of Oral Diagnosis, Centre for Oral Health Sciences, Lund University, Malmö, Sweden; Department of Oral Radiology, School of Dentistry, University of Tokushima, Tokushima, Japan

Hidehiko Hosoki Department of Oral Radiology, Institute for Postgraduate Dental Education, Jönköping, Sweden; Department of Oral Radiology and Department of Oral Diagnosis, Centre for Oral Health Sciences, Lund University, Malmö, Sweden; Department of Oral Radiology, School of Dentistry, University of Tokushima, Tokushima, Japan

Arne Petersson Department of Oral Radiology, Institute for Postgraduate Dental Education, Jönköping, Sweden; Department of Oral Radiology and Department of Oral Diagnosis, Centre for Oral Health Sciences, Lund University, Malmö, Sweden; Department of Oral Radiology, School of Dentistry, University of Tokushima, Tokushima, Japan

Madeleine Rohlin Department of Oral Radiology, Institute for Postgraduate Dental Education, Jönköping, Sweden; Department of Oral Radiology and Department of Oral Diagnosis, Centre for Oral Health Sciences, Lund University, Malmö, Sweden; Department of Oral Radiology, School of Dentistry, University of Tokushima, Tokushima, Japan

Sigvard Åkerman Department of Oral Radiology, Institute for Postgraduate Dental Education, Jönköping, Sweden; Department of Oral Radiology and Department of Oral Diagnosis, Centre for Oral Health Sciences, Lund University, Malmö, Sweden; Department of Oral Radiology, School of Dentistry, University of Tokushima, Tokushima, Japan

Abstract

Flygare L, Hosoki H, Petersson A, Rohlin M, Åkerman S. Bone volume in human temporomandibular autopsy joints with and without erosive changes.

The aim was to compare the trabecular bone volume (TBV) and the total bone volume (TOBV) of human temporomandibular joints (TMJ with erosive changes with those of joints without erosive changes. We examined 35 TMJ autopsy specimens from 19 individuals aged 66–88 years. Sagittal sections of the joints were analyzed microscopically for erosive hard-tissue changes. The TBV and the TOBV of the sections were assessed with the aid of computerized image analysis. A significant increase in trabecular and total bone volume was found in condyles with erosive changes (TBV = 21%, TOBV = 54%) as compared with condyles without erosive changes (TBV = 15%, TOBV = 40%). The trabecular bone volume of the temporal component was also increased (TBV = 24%) in joints with erosive changes in the condyle as compared with joints with unaffected condyles (TBV = 16%). The findings indicate that the relative bone mass may play a role in the development of erosive changes in the TMJ.

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Bone Volume in Human Temporomandibular Autopsy Joints with and Without Erosive Changes

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Bone Volume in Human Temporomandibular Autopsy Joints with and Without Erosive Changes

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