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Marchan, S.M., White, D., Marchan, Q.M., Dhuru, V. and Smith, W.A. (2013) Surface Properties of Dental Nanocomposites after Finishing with Rigid Rotary Instruments. Operative Dentistry, 38, 519-527.
https://doi.org/10.2341/12-214-L

has been cited by the following article:

  • TITLE: A Comparative Assessment of the Surface Roughness of Thermoplastic Denture Base Resins Following Adjustment and Re-Polishing

    AUTHORS: Shivaughn M. Marchan, Anna Kay Bishop, William A. J. Smith, Paul Seerattan, David Hinds

    KEYWORDS: DuraFlex, DuraCetal, Valplast, Poly Methylmethacrylate, Surface Roughness

    JOURNAL NAME: Open Journal of Stomatology, Vol.7 No.4, April 30, 2017

    ABSTRACT: Purpose: This study assessed the roughness of two injection-molded, thermoplastic materials used for denture bases compared with a polyamide material and compression molded Polymethylmethacrylate (PMMA) after the adjustment and re-polishing with either a laboratory protocol or a chair side protocol. Methods: Forty specimens, each of PMMA, Valplast, DuraFlex, Dura Cetal were fabricated and finished according to individual manufactures’ instructions. These materials were adjusted with tungsten carbide (TC) burs to mimic gross adjustments, and then re-polished either on a lathe or bonded silicon carbide (B-SC). Following instrumentation, the specimens were assessed using contact profilometry and scanning electron microscopy. Two-factor ANOVA was used to determine significant differences in mean surface roughness (Ra and Rmax), with included factors being material type and re-polishing regimen. Results: Mean Ra values ranged from 0.26 (DuraFlex control) to 1.82 (Valplast adjusted with TC burs). Mean Rmax values ranged from 1.88 (Dura Flex control) to 13.76 (Valplast adjusted with TC burs). Two-factor ANOVA revealed that interaction of both factors was significant (p Ra and Rmax. There was a statistically significant increase in both Ra (p Rmax (p