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BMC Oral Health
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Open Access 01-12-2024 | Research

Effect of CAD-CAM block thickness and translucency on the polymerization of luting materials

Authors: Bengü Doğu Kaya, Selinsu Öztürk, Ayşe Aslı Şenol, Erkut Kahramanoğlu, Pınar Yılmaz Atalı, Bilge Tarçın

Published in: BMC Oral Health | Issue 1/2024

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Abstract

Aim

This in-vitro study aimed to evaluate the degree of conversion (DC) of dual-cured luting cement (Bifix QM, VOCO) and flowable composite (Grandio Flow, VOCO) under lithium disilicate glass-ceramic (IPS e.max CAD, Ivoclar Vivadent) and hybrid ceramic (Grandio Blocs, VOCO; Cerasmart, GC) CAD-CAM blocks with different thicknesses.

Materials and methods

Contrast ratio (CR), translucency (TPab, TP00), and opalescence (OP) parameters of 30 disc-shaped CAD-CAM blocks (n = 5) prepared with two different thicknesses (1.5 and 2 mm) and 8 mm diameters were calculated using a spectrophotometer (VITA Easyshade V, Zahnfabrik). A total of 36 Bifix QM and Grandio Flow samples were prepared at 100 μm thickness using a specific setup by polymerizing from the top of the blocks. Following immersion in distilled water at 37 °C for 24 h, luting materials were examined by Fourier Transform Infrared Spectroscopy for DC calculation. Data were analyzed using One-way ANOVA, Kruskal Wallis, Mann Whitney U, and Independent Samples t-tests (p < 0.05).

Results

It was observed that, as the block thickness increased TPab, TP00, and OP decreased, while CR increased. There was no significant difference between the DC of Bifix QM and Grandio Flow when 1.5 mm blocks were used in all groups (p > 0.05). DC of Grandio Flow was significantly higher than Bifix QM under 2 mm-IPS e.max CAD (p = 0.011).

Conclusion

The translucency of the CAD-CAM blocks varies depending on their thickness. However, there was no significant difference in the DC of the luting materials depending on the block thickness. Further studies are needed on the use of flowable resin composites as luting material.
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Metadata
Title
Effect of CAD-CAM block thickness and translucency on the polymerization of luting materials
Authors
Bengü Doğu Kaya
Selinsu Öztürk
Ayşe Aslı Şenol
Erkut Kahramanoğlu
Pınar Yılmaz Atalı
Bilge Tarçın
Publication date
01-12-2024
Publisher
BioMed Central
Published in
BMC Oral Health / Issue 1/2024
Electronic ISSN: 1472-6831
DOI
https://doi.org/10.1186/s12903-024-05171-z

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