Original scientific paper
The influence of the type of polymerization upon the discoloration of composites
Andrej Meniga
; School of Dental Medicine, University of Zagreb, Zagreb, Croatia
Robert Beuc
; Institut za fiziku Sveučilišta u Zagrebu, Hrvatska
Krešimir Sanković
; Zavod za fiziku, Farmaceutsko-biokemijski fakultet, Zagreb, Hrvatska
Zdenko Franić
; Institu t za medicinska istražiavnja, Zagreb, Hrvatska
Abstract
Color stability of composite resin materials is influenced by composition of the material, type of curing, porosity, sunlight exposure, diet, and the oral hygiene. Light cured composite material Heliosit and chemically cured isosit were analysed under conditions of accelerated aging. Differences in color change were established between these two materials using the method of spectrophotometric reflection. Isopast became signifficantly darker and more porous, what is in agreement with clinical experience. Heliosit has shown better color stability, and some samples blanching because of the incomplete polymerisation. The samples with rough surfaces appeared linghter, and the manner of polishing have not caused differencies in color change between analysed samples.
Keywords
Hrčak ID:
102635
URI
Publication date:
15.6.1988.
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