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Cure behaviour of visible light-activated pattern materials.

Authors :
Whitworth, J. M.
Makhani, S. H. S.
McCabe, J. F.
Source :
International Endodontic Journal. May1999, Vol. 32 Issue 3, p191-196. 6p.
Publication Year :
1999

Abstract

Aim This study tested the hypothesis that the cure behaviour (depth of cure and polymerization contraction) of light-activated pattern materials was no worse than that of light-activated composite resins, allowing them to be handled in a similar fashion. Methodology Depth of cure was measured by a penetrometer method. Results Cure depths were comparable to those of composite resins, ranging from 3.52mm (Lumin-X paste) to 6.76mm (Visioform) after visible lightactivation for 30s. There were significant differences in the depth of cure of the three materials tested (P0.001). Polymerization contraction was assessed by a minimal load transducer method. Values ranged from 0.45% (Lumin-X paste) to 1.89% (Visioform), lower than that of composite resins. There were significant differences in the polymerization contraction values for each of the three materials (P0.001). Conclusions It was concluded that light-activated pattern materials cure in a manner comparable to composite resins, and may be built up incrementally in a similar fashion. [ABSTRACT FROM AUTHOR]

Subjects

Subjects :
*DENTAL resins
*ENDODONTICS

Details

Language :
English
ISSN :
01432885
Volume :
32
Issue :
3
Database :
Academic Search Index
Journal :
International Endodontic Journal
Publication Type :
Academic Journal
Accession number :
6102977
Full Text :
https://doi.org/10.1046/j.1365-2591.1999.00213.x