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Shrinkage of Dental Composite in Simulated Cavity Measured with Digital Image Correlation

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Elution from direct composites for provisional restorations.

Marko Turkalj¹, Siemon De Nys¹, Lode Godderis^2,3

¹KU Leuven (University of Leuven), Department of Oral Health Sciences, Biomat & UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium.

Journal of Prosthodontic Research

|April 14, 2024

Summary

Provisional dental composites did not release more monomers than permanent ones. However, dual-cured materials showed increased elution when set in self-cure mode.

Keywords:

Biocompatibility Liquid chromatography Mass spectrometry Restoration Temporary

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Published on: December 20, 2024

Area of Science:

Dental Materials Science
Polymer Chemistry
Biomaterials

Background:

Direct composite materials are used for both provisional and permanent dental restorations.
Understanding monomer elution from provisional composites is crucial for patient safety and material selection.

Purpose of the Study:

To quantify and compare monomer elution from direct composite materials used for provisional restorations.
To evaluate elution from provisional composites against direct restorative composites for permanent restorations.

Main Methods:

Four provisional composites (two dual-cure, two self-curing) and one reference restorative composite were tested.
Specimens were cured in self- and/or dual-curing modes and incubated in water and ethanol for 24 hours and four weeks.
Elution of specific monomers (BisEMA, BisGMA, CQ, UDMA, TEGDMA) was quantified using UHPLC-MS/MS.

Main Results:

All provisional composites showed monomer elution, but not exceeding the reference material.
Self-cured modes of dual-cure materials (Integrity Multi-Cure, Tempsmart DC) exhibited higher elution of certain monomers (BisEMA, CQ, TEGDMA, UDMA, BisGMA) compared to their dual-cured counterparts or the reference.
Elution levels varied between tested solvents (water vs. ethanol) and over time (24 hours vs. four weeks).

Conclusions:

Provisional composite materials do not elute higher monomer amounts than permanent restorative composites.
Setting dual-cure materials in self-curing mode may lead to increased monomer elution.