Gloss retention of nanocomposite resins after toothbrushing

Objectives . The purpose of this study was to evaluate the change of gloss for nanocomposite resins by toothbrushing.

Materials and methods . Nine different composite resins were filled into acrylic resin mold and light cured under slide glass (control surface). Gloss was measured using Novo-curve™ glossmeter (Rhopoint, U.K.). Then composite surface was polished with Enhance ® and Pogo ® (Dentsply/Caulk, Milford, DE, USA) as baseline. Brushing force was 250 g using a manual toothbrush (Braun oral B ® Indicator Plus) with toothpaste (NAME). Gloss measurements were performed after polishing and at 200, 400, 600, 800, 1000, 2000, and 3000 (6 month-final) manual stroke. Gloss retention was calculated with the following formula.

<SPAN role=presentation tabIndex=0 id=MathJax-Element-1-Frame class=MathJax style="POSITION: relative" data-mathml='Glossretention(%)=GfinalGbaseline×100′>Glossretention(%)=GfinalGbaseline×100Glossretention(%)=GfinalGbaseline×100
Gloss retention ( % ) = G final G baseline × 100
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Nov 30, 2017 | Posted by in Dental Materials | Comments Off on Gloss retention of nanocomposite resins after toothbrushing

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