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Updated: Jan 14, 2026

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Published on: January 25, 2019
Effects of pre-polymerization temperature on the mechanical properties and viscosity of light-cure flowable composite
Nakato Takagi1, Yumika Ida1, Tomoki Iuchi1
1Department of Conservative Dentistry, Tokushima University Graduate School of Biomedical Sciences.
Abstract:
This study evaluated the effects of pre-polymerization temperature on the mechanical properties and viscosity of light-cure flowable composite resins for core build-up. Four materials (EverX Flow, BeautiCore LC Injectable, Filtek Fill and Core Flowable Restorative Plus, and iTFC Luminous Core LC Flow) were conditioned at 4, 23, or 60°C. Flexural strength, elastic modulus, fracture toughness, and viscosity were measured. Temperature significantly affected viscosity and, in BeautiCore, Filtek, and iTFC, also influenced flexural strength and fracture toughness. The short fiber-reinforced composite EverX Flow showed superior mechanical performance with consistent temperature stability, while BeautiCore and Filtek demonstrated improved flowability after pre-heating. iTFC exhibited a low modulus and minimal temperature sensitivity. These results indicate that temperature is a critical factor in the clinical performance of flowable composites, with pre-heating enhancing handling through viscosity reduction.
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