Objectives: The aim of the study was to assess the performance of Cerana inlays. The results over 7 years of a prospective longitudinal study of 33 Cerana (Nordiska Dental, Sweden) prefabricated leucite ceramic restorations (25 Cl I, 8 class II) are presented. Methods: Restorations were placed in single appointments by one clinician and assessed by two examiners using modified USPHS criteria and graded A, B, C or D for anatomical form (AF), marginal adaptation (MA), surface roughness (SR), marginal discoloration (MD), colour match (CM), discomfort (DT). Results: The % of A scores for AF, MA, SR, MD, CM and DT at baseline (n=33) were: 100, 97, 79, 100, 21, 100; after 2 years (n=27) 100, 89, 33, 100, 19, 100 and after 4 years (n=19) 95, 74, 21, 95, 32, 100. At 6 years (n=13) 100, 77, 15, 92, 23, 100 and at 7 years (n=12) 100, 75, 0, 92, 17, 100. AF of the inlay was maintained but composite was lost where exposed in 75% restorations. SR increased to a B score for all inserts by 7 years. MD at B grade was observed in 8% between composite and tooth, none between insert and composite. The inlay colour was stable and the colour match was acceptable in all cases. DT was nil throughout the study. There were no scores less than B and so all restorations remain clinically acceptable and in function. Conclusions: The results suggest that these restorations can be expected to perform well. Over the seven year period there was a slight loss of marginal adaptation due to loss of marginal resin but no loss of ceramic and a slight increase in surface roughness. In conclusion, the results were promising in terms of aesthetics, patient acceptance, occlusal wear and ease of use.

Back to the Dental Materials Program
Back to the BSDR Annual Scientific Meeting (6th-8th April 2004)

Top Level Search