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

composites; discoloration

Hrčak ID:

102635

URI

https://hrcak.srce.hr/102635

Publication date:

15.6.1988.

Article data in other languages: croatian

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