Increased rates of photopolymerisation by ternary type II photoinitiator systems in dental resins.
Dental materials
Dental resins
Initiators
Mechanical properties
Journal
Journal of the mechanical behavior of biomedical materials
ISSN: 1878-0180
Titre abrégé: J Mech Behav Biomed Mater
Pays: Netherlands
ID NLM: 101322406
Informations de publication
Date de publication:
10 2019
10 2019
Historique:
received:
26
04
2019
revised:
04
06
2019
accepted:
05
06
2019
pubmed:
17
6
2019
medline:
21
10
2020
entrez:
17
6
2019
Statut:
ppublish
Résumé
To evaluate the effects of Type I and Type II photoinitiator systems on curing efficiency, degree of conversion (DC) and chemico-physical properties of resin based materials. A comonomer base containing 50%wt 2.2-bis[4-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane (bis-GMA) and 50%wt triethyleneglycol dimethacrylate (TEGDMA) was formulated with either 0.5 or 1mol% of Type II camphoroquinone (CQ), Type I monoacylphosphine oxide (MAPO) or bis-acylphosphine oxide (BAPO) photoinitiators. The Type II system was either a binary (1: 2 CQ:amine) or ternary system (1: 2 CQ:amine + 0.5 mol% DPI). Degree and rate of polymerization was measured by Fourier Transform Infrared Spectroscopy (FTIR). Knoop micro-hardness prior to and following ethanol immersion was assessed. Flexural strength and modulus was measured under three-point bend test. Water sorption and solubility was also evaluated. The photoinitiator absorption spectra and the total absorbed energy per unit volume (E
Identifiants
pubmed: 31203099
pii: S1751-6161(19)30593-4
doi: 10.1016/j.jmbbm.2019.06.005
pii:
doi:
Substances chimiques
Resins, Synthetic
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
71-78Informations de copyright
Copyright © 2019. Published by Elsevier Ltd.