Dental treatment and risk of variant CJD - a case control study

Everington, D., Smith, A.J., Ward, H.J.T., Letters, S., Will, R.G. and Bagg, J. (2007) Dental treatment and risk of variant CJD - a case control study. British Dental Journal, 202(8), pp. 470-471. (doi: 10.1038/bdj.2007.126)



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Abstract Objective: Knowledge of risk factors for variant CJD (vCJD) remains limited, but transmission of prion proteins via re-useable medical devices, including dental instruments, or enhanced susceptibility following trauma to the oral cavity is a concern. This study aimed to identify whether previous dental treatment is a risk factor for development of vCJD. Design: Case control study Methods: Risk factor questionnaires completed by interview with relatives of 130 vCJD patients and with relatives of 66 community and 53 hospital controls were examined by a dental surgeon. Responses regarding dental treatments were analysed. Results: We did not find a statistically significant excess of risk of vCJD associated with dental treatments with the exception of extractions in an unmatched analysis of vCJD cases with community controls (p=0.02). However, this result may be explained by multiple testing. Conclusions: This is the first published study to date to examine potential links between vCJD and dental treatment. There was no convincing evidence found of an increased risk of variant CJD associated with reported dental treatment. However, the power of the study is restricted by the number of vCJD cases to date and does not preclude the possibility that some cases have resulted from secondary transmission via dental procedures. Due to the limitations of the data available, more detailed analyses of dental records are required to fully exclude the possibility of transmission via dental treatment.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Bagg, Professor Jeremy
Authors: Everington, D., Smith, A.J., Ward, H.J.T., Letters, S., Will, R.G., and Bagg, J.
Subjects:R Medicine > RK Dentistry
College/School:College of Medical Veterinary and Life Sciences
College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing > Dental School
Journal Name:British Dental Journal
Publisher:Nature Publishing Group
Copyright Holders:Copyright © 2007 Nature Publishing Group
First Published:First published in British Dental Journal 202(8):457-461
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher.

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