Effect of the photoinitiator system on the properties of a dental material based on a hybrid polymer

Authors

  • Sandro Aurélio de Souza Venter Chemistry Department - UTFPR - Universidade Tecnológica Federal do Paraná, Apucarana - PR, Brasil.
  • Gedalias Custódio Martim Chemistry Department - UEM - Universidade Estadual de Maringá, Maringá - PR, Brasil.
  • Andressa dos Santos Chemistry Department - UEM - Universidade Estadual de Maringá, Maringá - PR, Brasil.
  • Tiago Roerto Detomini Chemistry Department - UEM - Universidade Estadual de Maringá, Maringá - PR, Brasil.
  • Eduardo Radovanovic Chemistry Department - UEM - Universidade Estadual de Maringá, Maringá - PR, Brasil.
  • Emerson Marcelo Girotto Chemistry Department - UEM - Universidade Estadual de Maringá, Maringá - PR, Brasil.

DOI:

https://doi.org/10.14295/bds.2016.v19i1.1233

Abstract

Objective: In this study, the effects of two different cure protocols upon the properties of composites using a hybrid-polymer as dental resin were evaluated. Material and Methods: Two distinct dental composites were prepared, one containing a mixture of TEGDMA/bis-GMA (50:50) and, another containing a mixture of TEGDMA/p-MEMO (50:50), [p-MEMO: oligomeric inorganic precursor]. Both composites were polymerized with lucirin and canphorquinone as photoinitiators. The composites were made with a 70 % wt of inorganic filler. Flexural strength was evaluated with a universal test machine and the degree of conversion was measured by infrared spectroscopy. A helium pycnometer was used to obtain polymer shrinkage data. Sorption tests were performed and SEM microscopy was used to show deleterious effects upon the resins’ surfaces. Results: The sample base on TEGDMA/p-MEMO polymerized with lucirin (L-T/p) showed the best values of the monitored properties. Conclusion: Lucirin is the most suitable photoinitiator for dental composites containing hybrid polymers.

Keywords

Dental resins; Flexural strength; Hybrid polymer; Photoinitiator system; Polymerization shrinkage.

Downloads

Download data is not yet available.

Downloads

Published

2016-03-14

How to Cite

1.
Venter SA de S, Martim GC, Santos A dos, Detomini TR, Radovanovic E, Girotto EM. Effect of the photoinitiator system on the properties of a dental material based on a hybrid polymer. BDS [Internet]. 2016 Mar. 14 [cited 2025 Aug. 25];19(1):96-105. Available from: https://bds.ict.unesp.br/index.php/cob/article/view/1233

Issue

Vol. 19 No. 1 (2016): Jan. - Mar. / 2016 - Published March 2016

Section

Clinical or Laboratorial Research

License

Brazilian Dental Science uses the Creative Commons (CC-BY 4.0) license, thus preserving the integrity of articles in an open access environment. The journal allows the author to retain publishing rights without restrictions.

=================

COPYRIGHT TRANSFER AND RESPONSIBILITY STATEMENT
 (PDF)

For all articles published in the BDS journal, copyright is retained by the authors. Articles are licensed under an open-access Creative Commons CC BY 4.0 license, meaning that anyone may download and read the paper for free. In addition, the article may be reused and quoted, provided that the original published version is cited. These conditions allow for maximum use and exposure of the work while ensuring that the authors receive proper credit. All metadata associated with published articles is released under the Creative Commons CC0 Universal Public Domain Dedication.

Before the submission, authors must obtain permission to reproduce any published material (figures, schemes, tables, or any extract of a text) that does not fall into the public domain or for which they do not hold the copyright. Permission should be requested by the authors from the copyright holder (usually the Publisher, please refer to the imprint of the individual publications to identify the copyright holder).

The authors hereby attest that the study is original and does not present manipulated data, fraud, or plagiarism. All names listed made a significant scientific contribution to the study, are aware of the presented data, and agree with the final version of the manuscript. They assume complete responsibility for the ethical aspects of the study.

This text must be printed and signed by all authors. The scanned version should be submitted as supplemental file during the submission process.