Long-Term Effect of Nanosized Boric Acid Powder on Optical Properties of Polymer Infiltrated Ceramic CAD-CAM Material

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Sasany R., EYÜBOĞLU T. F., Özcan M.

Coatings, vol.13, no.3, 2023 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 13 Issue: 3
  • Publication Date: 2023
  • Doi Number: 10.3390/coatings13030483
  • Journal Name: Coatings
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Communication Abstracts, INSPEC, Metadex, Directory of Open Access Journals, Civil Engineering Abstracts
  • Keywords: boric acid, CAD-CAM, color stability, dental materials, nanosize powder, polymer infiltrated ceramic network, prosthodontics, Vita Enamic
  • Istanbul Medipol University Affiliated: Yes


The current study investigated the effect of boric acid (H3BO3) nanosized powder on the optical properties of a Computer-Aided Design and Computer-Aided Manufacturing (CAD-CAM) polymer infiltrated ceramic material. Specimens (n = 60), (15 × 8 × 1.5 mm3) were fabricated from a polymer infiltrated ceramic network (PINC) (Vita Enamic, Vita Zahnfabrik, VITA-shade scale A2). Boric acid (B) nano powder was applied to Vita Enamic in half of the specimens (n = 30), while the other half was left untreated (NB) (n = 30). Aging for all specimens was performed for 5 h at 134 °C. Color coordinates (L*, a*, and b*) before and after aging were measured to calculate the color change (ΔE00) and the translucency parameter (TP) within and between the B and NB groups. One-way ANOVA was used to analyze the effect of boric acid on all color parameters (α = 0.05). Only L* increased in B after aging (p < 0.001). L* and b* significantly changed after aging in NB (p < 0.001). Boric acid application affected the color change within the ceramic after aging (p < 0.001). The mean color change (ΔE00) in B after aging was significantly smaller than the color change in NB after aging (p < 0.001). The color difference between B and NB increased after aging (p < 0.001). No significant effect of aging was found on TP of B (p = 0.143). The TP of NB significantly decreased after aging (p < 0.001). The use of boric acid provided color stability and translucency on aged tested material.