Flexural Strengths and Color Stability of Bis-acryl Resin Materials for Provisional Restorations

Main Article Content

Watcharaporn Kuphasuk
Nayot Ponlasit
Choltacha Harnirattisai

Abstract

Objectives: This study evaluated the flexural strength and color stability of 3 bis-acryl resins (Luxatemp FluorescenceTM, Protemp 4TM and IntegrityTM) and a polymethyl methacrylate-based resin (Unifast TradTM) after different aging conditions.


Materials and Methods: Twenty bar-shaped specimens of each material were prepared for flexural strength test performed at 30 minutes after mixing, 24 hour and 7 day water storage with or without thermocycling. For color stability test, color parameters were measured on 20 disc-shaped specimens, 5 specimens for each material, at the same aging conditions.


Results: All bis-acryl resins showed low flexural strengths at 30 minutes after mixing but increased after 7 day water storage with or without thermocycling. Polymethyl methacrylate-based resin showed similar flexural strengths at all-time intervals. Color differences ( E) of all bis-acryl resins were less than that of polymethyl methacrylate-based resin. The greatest E was observed in a polymethyl methacrylate-based resin after 24 hour water storage. No significant differences of E among bis-acryl resins were detected in all conditions.


Conclusions: Bis-acryl resins showed higher flexural strengths and less E than polymethyl methacrylate-based resin. Thermocycling did not alter flexural strengths and color changes of these materials.

Article Details

How to Cite
1.
Kuphasuk W, Ponlasit N, Harnirattisai C. Flexural Strengths and Color Stability of Bis-acryl Resin Materials for Provisional Restorations. M Dent J [Internet]. 2018 Jul. 20 [cited 2024 Dec. 21];38(2):135-46. Available from: https://he02.tci-thaijo.org/index.php/mdentjournal/article/view/179313
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Original articles

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