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Cartilage changes link retrognathic mandibular growth to TMJ disc displacement in a rabbit model
Umeå University, Faculty of Medicine, Department of Odontology, Oral and Maxillofacial Radiology.
2011 (English)In: International Journal of Oral and Maxillofacial Surgery, ISSN 0901-5027, E-ISSN 1399-0020, Vol. 40, no 6, 621-627 p.Article in journal (Refereed) Published
Abstract [en]

Recent experimental research demonstrated that non-reducing temporomandibular joint (TMJ) disc displacement in growing rabbits impaired mandibular growth. TMJ disc displacement is also shown to induce histological changes of the condylar cartilage. The authors hypothesized that the severity of these changes would correlate to the magnitude of mandibular growth. Bilateral non-reducing TMJ disc displacement was surgically created in 10 growing New Zealand White rabbits. Ten additional rabbits constituted a sham operated control group. Aided by tantalum implants, growth was cephalometrically determined for each mandibular side during a period equivalent to childhood and adolescence in man. At the end of the growth period, histologically classified cartilage features were correlated with the assessed ipsilateral mandibular growth. Non-reducing displacement of the TMJ disc during the growth period induced histological reactions of the condylar cartilage in the rabbit model. The severity of cartilage changes was inversely correlated to the magnitude and the direction of mandibular growth, which resulted in a retrognathic growth pattern.

Place, publisher, year, edition, pages
Elsevier , 2011. Vol. 40, no 6, 621-627 p.
Keyword [en]
adaptive modelling, adolescence, biomechanical function, mandibular retrognathia, temporomandibular joint
National Category
Radiology, Nuclear Medicine and Medical Imaging
Research subject
URN: urn:nbn:se:umu:diva-45669DOI: 10.1016/j.ijom.2011.01.004PubMedID: 21334177OAI: diva2:433241
Available from: 2011-08-09 Created: 2011-08-09 Last updated: 2011-08-10Bibliographically approved

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Bryndahl, FredrikIsberg, A
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