Tissue Reactions of the Temporomandibular Joint Following Retrusive Guidance of the Mandible

Abstract

Tissue reactions in monkey temporomandibular joints (TMJs) were studied following retrusive guidance of the mandible. Eleven adult Macaca fascicularis monkeys were used (four experimental animals and seven controls). Interferences between intercuspal position and retruded position were eliminated in the experimental animals. Bilateral interferences were then introduced to guide the mandible into retruded position during mouth closure. The experimental period lasted for five weeks.

After radiographic examination, the joints were histotechnically processed, and sagittal sections were taken throughout the joints for light microscopy. In contrast to the untreated animals, the experimental monkeys demonstrated pathological changes in the posterior band of the disk and posterior disk attachment. The flattening of the posterior band of the disk that occurs with retrusive guidance may predispose subjects to anterior disk displacement.

Additional information

Notes on contributors

Annika M. Isberg

Annika M. Isberg, D.D.S., Odont. Dr.

Dr. Isberg received her D.D.S. degree from the School of Dentistry at the Karolinska Institutet, Stockholm. Sweden, in 1968. and she earned her Odont. Dr. there in 1980. She is a certified dento-maxillo-facial radiologist and is an associate professor in the Department of Oral Radiology at the Karolinska Institutet.

She belongs to a number of Swedish and international professional organizations and she is also a diplomate of the Swedish Board of Dento-Maxillo-Facial Radiology.

Dr. Isberg has published a number of scientific papers and has presented numerous guest lectures and postgraduate courses in nine countries.

Göran Isacsson

Göran Isacsson, D.D.S., Odont. Dr.

Dr. Isacsson received his D.D.S. degree from the School of Dentistry at the Karolinska Institutet in Stockholm. Sweden, in 1973, and he received his Odont. Dr. there in 1977. He qualified for a specialty in oral pathology in 1980.

Dr. Isacsson is an associate professor working at the Department of Stomatognathic Physiology. Karolinska Institutet. He belongs to a number of Swedish and international professional organizations involving research in dentistry, prosthetic and stomatognathic physiology, oral pathology, and studies of pain.

He has given courses in several countries, presented numerous research reports, and published many scientific papers.