In-vitro evaluation of wear characteristics, microhardness and color stability of dental restorative CAD/CAM materials

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Bayraktar E., TÜRKMEN C., YILMAZ ATALI P., TARÇIN B., KORKUT B., Yaşa B.

Dental materials journal, cilt.43, sa.1, ss.74-83, 2024 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 43 Sayı: 1
  • Basım Tarihi: 2024
  • Doi Numarası: 10.4012/dmj.2023-071
  • Dergi Adı: Dental materials journal
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Biotechnology Research Abstracts, Communication Abstracts, Compendex, EMBASE, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.74-83
  • Anahtar Kelimeler: CAD/CAM, Composite, Discoloration, Microhardness, Wear
  • Marmara Üniversitesi Adresli: Evet

Özet

The aim of this study was to demonstrate the vertical and volumetric wear characteristics of CAD/CAM materials. The microhardness and color stability were evaluated. A polymer infiltrated ceramic network CAD/CAM block, resin nanoceramic CAD/CAM blocks, a resin composite, and enamel tissue were investigated. Samples were loaded in a chewing simulator. Other samples were aged and immersed in coffee. Color change was evaluated using the digital image analysis and a spectrophotometer. The data were analyzed using Kolmogorov-Smirnov, Kruskal Wallis, Mann Whitney U, Friedman, Spearman's rho tests (p<0.05). The lowest level of wear was obtained in enamel tissue group 0.20 (Q1:0.14; Q3:0.27μm). Resin composite group 2.48 (Q1:2.12; Q3:2.92) showed lower level of discoloration. No agreement was obtained between the digital image analysis and spectrophotometer data (Spearman's rho -0.314, p=0.014). Similar wear rate to the natural enamel tissue was obtained for Vita Enamic. Digital image analysis was considered a promising technique for monitoring the color change.