Abstract
Objective To compile an inventory of data from clinical studies on anterior veneer restorations, with special reference to clinical trials to produce a mean survival result using a meta-analysis.
Data sources Medline search 1983 to November 1996 using key words ‘dental’ and ‘Veneer’.
Study selection A two-stage selection was employed. Initially all non-clinical studies case reports and descriptive papers were excluded. Subsequently all papers which did not meet the following criteria were excluded: English language, 2-year or more follow-up, type, number and location of restoration noted, number of patients stated together with type of restoration, study outcome shown as failure or survival. A quality scoring system was applied to the selected papers and used in combination with the sample size for combining the studies.
Results Initially 1056 studies were identified after the initial selection 25 clinical studies remained; this was reduced to 15 at the subsequent selection. Two further studies were excluded, as their data did not allow calculation of survival curves. The cumulative proportion of survival for porcelain and pre-formed acrylic veneer restoration after 3 years is shown in the table below.
Conclusion Porcelain veneers show acceptable longevity after 3 years, which appears better than the preformed acrylic type. The evaluative and statistical analysis of clinical veneer restoration studies may be improved.
Kreulen C M, Creugers N H J, Meijering A C. Meta-analysis of anterior veneer restorations in clinical studies. J Dent 1998; 26: 345–353
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Address for reprints: C M Kreulen, Department of Occlusal Reconstruction and Oral Function, Dental School, University of Nijmegen. P O Box 9101, 6500HB Nijmegan, The Netherlands
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Walls, A. 90% of porcelain veneer restorations survive 3 years. Evid Based Dent 1, 15 (1999). https://doi.org/10.1038/sj.ebd.6490039
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DOI: https://doi.org/10.1038/sj.ebd.6490039