Advanced Search

Home > Journals > Minerva Stomatologica > Past Issues > Minerva Stomatologica 2016 April;65(2) > Minerva Stomatologica 2016 April;65(2):65-71

ISSUES AND ARTICLES   MOST READ   eTOC

CURRENT ISSUEMINERVA STOMATOLOGICA

A Journal on Dentistry and Maxillofacial Surgery

Official Journal of the Italian Society of Odontostomatology and Maxillofacial Surgery
Indexed/Abstracted in: CAB, EMBASE, Index to Dental Literature, PubMed/MEDLINE, Scopus, Emerging Sources Citation Index

Frequency: Bi-Monthly

ISSN 0926-4970

Online ISSN 1827-174X

 

Minerva Stomatologica 2016 April;65(2):65-71

    ORIGINAL ARTICLES

The influence of concentration of HEMA on degree of conversion and cytotoxicity of a dental bonding resin

Rodrigo V. DE CARVALHO 1, Luiz A. CHISINI 2, Camila P. FERRUÁ 2, Ricardo D. GUIRALDO 3, Alcides GONINI-JÚNIOR 3, Sandra K. MOURA 3, Sandra B. C. TARQUÍNIO 2, Flávio F. DEMARCO 2

1 Department of Restorative Dentistry, School of Dentistry, Meridional Faculty (IMED), Passo Fundo, Brazil; 2 Department of Operative Dentistry, School of Dentistry, Federal University of Pelotas, Brazil; 3 Department of Restorative Dentistry, School of Dentistry, University of North Parana, Londrina, Brazil

BACKGROUND: This study evaluated the influence of 2-hydroxyethyl methacrylate (HEMA) on the degree of conversion (DC) and cytotoxicity of a dental bonding resin (DBR).
METHODS: A monomer mixture based on 61.9 wt% of bisphenol A glycidyl methacrylate (Bis-GMA), 36.9 wt% of triethylene glycol dimethacrylate (TEGDMA), and photoactivated using a binary system based on camphoroquinone (0.4 wt%) and ethyl 4-dimethylamine benzoate (0.8 wt%) was used as DBR. Different groups were obtained with addition of HEMA in crescent concentrations. DC was accessed by Real time Fourier Transform infrared spectroscopy. The cytotoxicity was evaluated with MTT assay. The DC and cytotoxicity were analyzed by one-way ANOVA followed by Tukey’s Test (P<0.05).
RESULTS: A decrease in the DC was observed in the group with higher amount of HEMA. All tested-extracts were cytotoxic and there was an increased cytotoxic effect with higher HEMA addition.
CONCLUSIONS: Higher amount of HEMA in the DBR resulted in adverse effects, with more cell toxicity and lower degree of conversion.

language: English


FULL TEXT  REPRINTS

top of page