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A Denture Base Resin Developed Using Hyperbranched Polyurethane Acrylate, Tricyclodecane Dimethanol Diacrylate, and
Kuo-Chung Cheng1, Cin-Yun Lin2, Yu-Hsuan Chien1
1Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106344, Taiwan.
ACS Omega
|January 1, 2026
Summary
Researchers developed a new denture base material using hyperbranched polyurethane acrylate (HBPUA) and tricyclodecane dimethanol diacrylate (TCDDMDA). This novel material shows promising mechanical properties and biocompatibility, potentially improving upon current denture base resins.
Area of Science:
- Biomaterials Science
- Polymer Chemistry
- Dental Materials
Background:
- Poly-(methyl methacrylate) (PMMA) is the standard denture base material but suffers from insufficient mechanical strength, leading to frequent fractures.
- Improving the mechanical properties and longevity of denture base materials is crucial for patient well-being and reducing replacement frequency.
Purpose of the Study:
- To synthesize a novel hyperbranched polyurethane acrylate (HBPUA) for denture base applications.
- To evaluate the properties of blended resins composed of HBPUA and tricyclodecane dimethanol diacrylate (TCDDMDA) for 3D printing denture bases.
- To compare the performance of the developed resin with a commercial denture base material (Denture 3D+).
Main Methods:
- Hyperbranched polyurethane acrylate (HBPUA) synthesized via specific molar ratios.
- Resin formulations with varying HBPUA and TCDDMDA ratios were prepared and characterized for viscosity.
- Liquid crystal display-based 3D printing was used to fabricate resin samples.
- Spectroscopic (FTIR) and mechanical tests (three-point bending, impact, microhardness) were performed.
- Water sorption, solubility, surface roughness, and volumetric shrinkage were evaluated.
Main Results:
- A 10 wt% HBPUA and 90 wt% TCDDMDA blend (TC10) was optimal for 3D printing.
- The developed TC10 material exhibited lower water sorption, solubility, surface roughness, and volumetric shrinkage compared to Denture 3D+.
- Group 4 (TC10-0.01, 15 s) showed superior flexural strength and modulus after water immersion, meeting ISO 20795-1 standards.
- Impact strength, microhardness, and biocompatibility of Group 4 were comparable to Denture 3D+.
Conclusions:
- The developed HBPUA/TCDDMDA resin (TC10) demonstrates significant potential as a superior alternative to current PMMA-based denture base materials.
- The material's favorable mechanical properties, low water sorption, and good biocompatibility suggest suitability for clinical application.
- Optimized 3D printing parameters and resin composition are key for achieving enhanced denture base material performance.
