UV POLYMERIZED NEW GENERATION ACRYLIC MATERIALS FOR DENTURE BASES: A LITERATURE REVIEW

Background:Polymethyl methacrylate (PMMA) has long been the
standard for denture base fabrication, but conventional heat- and coldcured methods present drawbacks such as porosity, residual monomer
release, and limited mechanical strength. Recently, UV-polymerized
acrylic resins have emerged as a promising alternative.
Objective:To review and synthesize current scientific data on the
mechanical, thermal, chemical, and biological properties of UVpolymerized acrylic materials for denture bases and evaluate their
clinical potential.
Methods:A systematic literature review was conducted using Scopus,
PubMed, ScienceDirect, and Google Scholar databases, focusing on
articles published between 2014 and 2024. Forty-one studies were
included, covering laboratory tests, clinical evaluations, and material
technology assessments. Key parameters reviewed included flexural
strength, surface hardness, porosity, residual monomer content, and
biocompatibility.
Results:UV-polymerized resins demonstrated improved flexural
strength (120–140 MPa) and surface hardness (22–27 VHN) compared
to traditional PMMA. SEM analysis showed smoother, less porous
surfaces, aiding in microbial resistance and color stability. Residual
monomer release was notably lower (≤0.2%), and cytotoxicity was
minimal. Thermal testing revealed dimensional changes below 0.4%
After 500 cycles.These properties indicate enhanced safety and
durability