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Caries incidence following restoration of shortened lower dental arches in a randomized controlled trial

Lookup NU author(s): Dr Nick Jepson, Professor Paula Moynihan, Professor Mark Thomason


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Context: Removable partial dentures used to restore the shortened lower dental arch may adversely affect the remaining natural teeth and are associated with a low prevalence of use. Objective: To report the findings for caries incidence 2 years after restoration of lower shortened arches with bilateral cantilever resin-bonded bridges (RBBs) and conventional partial dentures (RPDs). Design: Randomised controlled trial. Setting: Secondary care. Patients: 25 male and 35 female subjects of median age 67 years. were randomly allocated to 'bridge' and 'denture' treatment groups of 30 patients each matched for age and sex. Caries incidence was recorded during dental examinations 3 months, 1 and 2 years after insertion of new lower prostheses. Interventions: Cantilever RBBs and conventional RPDs with cast metal frameworks. Results: There was a highly significant difference in the frequency of new caries lesions, 11 and 51 in the bridge and denture groups respectively (P < 0.01). 20 out of 27 bridge patients and 9 of 23 denture patients had no caries experience. Multivariate modeling identified treatment group as the only significant predictor of caries occurrence. Conclusions: Two years after restoration of lower shortened arches for an elderly sample of patients, there was a significantly greater incidence of new and recurrent caries lesions in subjects restored with RPDs compared with cantilever RBBs. © British Dental Journal 2001.

Publication metadata

Author(s): Jepson NJA, Moynihan PJ, Kelly PJ, Watson GW, Thomason JM

Publication type: Article

Publication status: Published

Journal: British Dental Journal

Year: 2001

Volume: 191

Issue: 3

Pages: 140-144

ISSN (print): 0007-0610

ISSN (electronic): 1476-5373

Publisher: Nature Publishing Group


DOI: 10.1038/sj.bdj.4801122

PubMed id: 11523885


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