Scopus
Effects of different surface finishing procedures on mechanical properties and cytotoxicity of a 3D-printed resin for interim fixed dental prosthesis
Journal of Dentistry · Mart 2026
Makale Bilgileri
DergiJournal of Dentistry
Yayın TarihiMart 2026
Cilt / Sayfa166
Scopus ID2-s2.0-105027526012
Özet
Objectives: This study evaluated the effects of different surface finishing procedures on the mechanical properties and cytotoxicity of a 3D-printed interim fixed dental prosthesis (IFDP) resin. Methods: A mechanically polished conventional acrylic resin (C-MP) and a milled block mechanically polished (M-MP) were used as controls. A 3D-printed (3DP) resin was used in five different surface finishing procedures [no procedure (NO), optiglaze/intraoral curing (OI), optiglaze/extraoral curing (OE), armaglaze/extraoral curing (AE), and mechanically polished (MP)]. For each group, bar and disc-shaped specimens (n = 15) were obtained. A three-point bending test was conducted at a crosshead speed of 1 mm/min. Flexural strength and flexural modulus were evaluated. The fractured pieces were tested for Vickers micro-hardness (VHN) (n = 5). Traditional colorimetric tetrazolium-based reduction assay (XTT) and a real-time cell analysis (RTCA) system were used to assess the eluates' cytotoxicity on cultured L-929 mouse fibroblast cells. Data was analyzed with one-way ANOVA, followed by Dunnet T3 or Tukey's tests (α = 0.05). Results: There was no statistically significant difference between the mean flexural strength of the printable resin with different surface finishing protocols (p > 0.05). The mean flexural modulus of 3DP-OE was significantly higher than the mean of control groups, 3DP-NO, and 3DP-MP (p < 0.05). C-MP group had the lowest mean VHN (7.1 ± 1.2) (p < 0.05). All groups showed cell viability higher than 70% in XTT. The 1:1 concentration of C-MP had the lowest mean cell survival rate of 87.04%. RTCA results were consistent with XTT results. Conclusions: A 3D-printed IFDP resin with different surface finishing procedures demonstrated favorable mechanical and biological properties. Different surface finishing procedures affect flexural modulus and VHN of the IFDP resin. Clinical significance: Glazing or mechanical polishing is recommended for 3D-printed IFDP resin, and it should be considered that the wear of the surface layer may be affected by the applied finishing procedure. Long-term wear resistance, staining, and intraoral aging should be evaluated in future research.
Yazarlar (5)
1
Nazli Aydin
ORCID: 0000-0002-7124-7989
2
Necla Demir
ORCID: 0000-0003-0927-6962
3
H. E. Ülker
4
Zeynep Betül Sarı
5
Yurdanur Ucar
ORCID: 0000-0003-0505-8685
Anahtar Kelimeler
3D printing
Cytotoxicity
Glazing
Mechanical properties
Polishing
Temporary resin
Kurumlar
Ankara Yildirim Beyazit University
Ankara Turkey
Çukurova Üniversitesi
Adana Turkey
Selçuk Üniversitesi
Selçuklu Turkey
The Ohio State University
Columbus United States