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Materiale Plastice
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https://doi.org/10.37358/Mat.Plast.1964

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Materiale Plastice (Mater. Plast.), Year 2015, Volume 52, Issue 2,





Sorana Baciu, Adrian Florea, Marius Manole, Camelia Alb, Adriana Pirte, LAURA CRISTINA RUSU, Cosmin Sinescu An Electron Microscope Comparative Study of the Marginal Fit of Cast Metal Crowns Using Several Waxing Techniques and Different Cervical Preparation Techniques


Abstract:
Crown preparation and wax pattern technique are two key factors for the success of a cemented restoration. A poor marginal fit is the main cause of plaque penetration and leakage of oral liquids enhancing thus caries and periodontal disease <1, 2> The present study compares the marginal fit of full metallic crowns restoring caries free extracted molars using different types of marginal preparation as well as different wax-up techniques. The marginal gap was analyzed using scanning technique with an electronic microscope before and after in vitro cementation in several points for every surface of each tooth. Data were statistically analyzed and compared. The scanning technique enhances measurements of the marginal gap without sectioning and provides an objective evaluation of preparation and cementation techniques. Keywords: scanning electron microscopy, marginal gap, crowns, wax pattern techniques, marginal preparation techniques



Issue: 2015 Volume 52, Issue 2
Pages:
Publication date: 2015/6/30
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