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Comparison of Wear Resistance of Prefabricated Composite Veneers Versus Ceramic and Enamel
Author(s) -
Dederichs Marco,
Fahmy Mina D.,
An Hongseok,
Guentsch Arndt,
Viebranz Stephanie,
Kuepper Harald
Publication year - 2021
Publication title -
journal of prosthodontics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.902
H-Index - 60
eISSN - 1532-849X
pISSN - 1059-941X
DOI - 10.1111/jopr.13303
Subject(s) - enamel paint , materials science , veneer , dentistry , abrasion (mechanical) , tooth wear , surface roughness , dental porcelain , profilometer , lithium disilicate , citric acid , composite material , ceramic , medicine , chemistry , organic chemistry
Purpose To measure surface roughness before and after wear‐tests of two different prefabricated composite veneers and compare them to ceramic veneers and human dental enamel. Materials and Methods Roughness (Ra‐values) of two prefabricated composite veneers (Visalys Veneer Chairside (VIS) and Componeer (COM)) were compared to lithium disilicate Veneers (e.max CAD) and dental enamel (DENT) in vitro. In total n = 45 specimens per material and enamel samples were used for wear‐tests. Wear‐out tests were conducted by abrasion tests with a toothbrush simulator (22,000 strokes/ 100 g load; approximately equal to two years of cleansing) and erosion tests were carried out using citric acid (pH 1.57). Ra‐ and Sa‐values were detected by white light interferometer before and after wear‐tests. Data were analyzed with ANOVA followed by Games‐Howell post hoc test and t‐test (α = 0.05). Results At baseline the lowest Ra‐ and Sa‐values were found in VIS (Ra: 0.01 µm; Sa: 0.04 µm) while DENT revealed significantly higher surface roughness (Ra: 0.11 µm, p < 0.05; Sa: 0.30, p = 0.186). COM had significantly higher Ra‐values (Ra: 0.10 µm; Sa: 0.22 µm) after abrasion, while e.max CAD was most resistant to the treatments (Ra: 0.01 µm, p < 0.05; Sa: 0.05 µm, p < 0.05). Compared to DENT all veneers were significantly less affected by citric acid ( p < 0.001). Conclusions Prefabricated composite veneers have demonstrated less wear after abrasion and erosion tests compared to DENT, nevertheless, they revealed more wear compared to e.max CAD.