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Evaluation of the effect of curing techniques on colour property of acrylic resins

Forschungsarbeit 2004 6 Seiten

Medizin - Zahnmedizin

Leseprobe

ABSTRACT

This study was carried out to evaluate the colour property of two types of acrylic resin materials cured by microwave tech- nique in comparison with that cured by conventional water bath technique.

Two types of heat cured acrylic resin materials were selected: Quayle-Dental and Major-base types. Seventy-two sam- ples (30×20×1.5 mm) were prepared and divided into four experimental groups: Quayle-Dental and Major-base groups were cured by microwave technique and the others Quayle-Dental and Major-base groups were cured by water-bath techni- que. The number of samples for each gr- oup was 18.

The colour property for the samples was evaluated using computerized ultra- violet-visible spectrophotometer with acc- uracy up to 0.001 nm. The absorbed light was measured which is also termed the optical density.

The results of this study showed that there were no significant differences in optical density for acrylic resin samples cured by microwave and water-bath tech- niques, and the acrylic resin with smaller particle size (Quayle-Dental) showed hi- gher optical density (colour property) than that of larger particle size (Major-base). Key Words: Optical density, colour prop- erty, microwave technique.

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INTRODUCTION

There has been a continuous research wave energy to polymerize acrylic resin to reduce the processing time, and enhance denture materials was first reported by the physical properties of denture base Nishii.(2)

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Details

Seiten
6
Jahr
2004
ISBN (eBook)
9783656365983
Dateigröße
623 KB
Sprache
Deutsch
Katalognummer
v207694
Institution / Hochschule
University of Mosul – Dental college
Note
Schlagworte
evaluation

Autor

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Titel: Evaluation of the effect of curing techniques on colour property of acrylic resins