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Updated: Sep 14, 2025

Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
Comparative analysis of the bond strength of digital denture base materials
Anhar Basunbul1, Shatha Alshali1, Ghadeer Basunbul1
1Oral and Maxillofacial Prosthodontics Department, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia.
Purpose:
Evaluate the bond strength of commercial digital denture base materials to denture teeth and characterize composite resins.
Materials And Methods:
Twenty-four square-shaped specimens were prepared from Lucitone 199 denture base disc (Dentsply Sirona), AvaDent denture base puck (AvaDent), KeyMill denture base disc (Keystone), Lucitone digital print denture base resin (Dentsply Sirona), Formlabs denture base resin (Formlabs), and Dentca denture base resin II (Dentca) to test the bond strength to manufacturer-recommended denture teeth and characterize composite resin. Bond strength was determined using the shear bond test. Data were analyzed using one-way ANOVA followed by Tukey's HSD test (α = 0.05). Failure mode for all debonded specimens was analyzed using a stereomicroscope.
Results:
The milled bases exhibited better bonding to manufacturer-recommended denture teeth but showed a low bond strength to the characterizing composite resin. In contrast, the printed bases showed a low bond strength to the manufacturer-recommended denture teeth material but displayed a better bond strength to the characterizing composite resin. The difference was statistically significant (p < 0.05).
Conclusion:
This study demonstrates that the bond strength of milled denture bases to the manufacturer-recommended denture teeth is higher compared to that of printed denture bases, except for Lucitone 3D, which exhibited significantly higher bond strength when using Digital Fuse techniques. Future research should investigate surface modification strategies to improve long-term durability of bonds between denture bases and both denture teeth, and characterize composite resins as achieving reliable bonding to digital denture bases remains a clinical concern.
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