Effects of immediate and delayed light activation on the polymerization shrinkage-strain of dual-cure resin cements / 대한치과보철학회지
The Journal of Korean Academy of Prosthodontics
;
: 195-201, 2014.
Article
Dans Coréen
| WPRIM
| ID: wpr-199550
ABSTRACT
PURPOSE:
This study was designed to compare the amount of polymerization shrinkage of dual-cure resin cements according to different polymerization modes and to determine the effect of light activation on the degree of polymerization. MATERIALS ANDMETHODS:
Four kinds of dual-cure resin cements were investigated Smartcem 2, Panavia F 2.0, Clearfil SA Luting and Zirconite. Each material was tested in three different polymerization modes self-polymerization only, immediate light polymerization and 5 minutes-delayed light polymerization. The time-dependent polymerization shrinkage-strain was evaluated for 30 minutes by Bonded-disk method at 37degrees C. Five recordings of each material with three different modes were taken. Data were analyzed using one-way ANOVA and multiple comparison Scheffe'test (alpha=.05).RESULTS:
All materials, except Panavia F 2.0, exhibited the highest polymerization shrinkage-strain through delayed light-activated polymerization. No significant difference between light activation modes was found with Panavia F 2.0. All materials exhibited more than 90% of polymerization rate in the immediate or delayed light activated group within 10 minutes.CONCLUSION:
As a clinical implication of this study, the application of delayed light activation mode to dual-cure resin cements is advantageous in terms of degree of polymerization.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Polymères
/
Céments résine
/
Polymérisation
langue:
Coréen
Texte intégral:
The Journal of Korean Academy of Prosthodontics
Année:
2014
Type:
Article
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