Clinical Marginal and Internal Gaps of Procera AllCeram Crowns.

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Clinical Marginal and Internal Gaps of Procera AllCeram Crowns.

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Publication Article, other scientific
Title Clinical Marginal and Internal Gaps of Procera AllCeram Crowns.
Author Kokubo, Yuji ; Ohkubo, Chikahiro ; Tsumita, Mitsuyoshi ; Miyashita, Akira ; Vult von Steyern, Per ; Fukushima, Shunji
Date 2005
English abstract
This study evaluated the marginal and internal gaps of Procera AllCeram crowns in vivo using silicone materials. Ninety Procera AllCeram crowns were evaluated before final cementation. White and black silicone materials were used to record the marginal and internal fit; then the crowns were sectioned bucco-lingually and mesio-distally to measure the thickness of the silicone layer using a microscope. Sixteen reference points were measured on each specimen. Mean marginal gaps among anterior, premolar and molar teeth, and mean gaps at the reference points within the groups were compared by analysis of variance and Dunnett T3 test. The mean values at the margins were the smallest in all tooth groups, whereas those at the rounded slope of the chamfer were the largest. There were significant differences (P < 0.001) in the mean gaps at the four reference points (margin, rounded slope of the chamfer, axial wall and occlusal surface) in each group, except for the molar teeth. The mean marginal gaps of the Procera AllCeram crowns were within the range of clinical acceptance.
DOI http://dx.doi.org/10.1111/j.1365-2842.2005.01458.x (link to publisher's fulltext)
Host/Issue Journal of oral rehabilitation;7
Volume 32
ISSN 0305-182X
Pages 526-30
Language eng (iso)
Subject Medicine
Research Subject Categories::ODONTOLOGY
Handle http://hdl.handle.net/2043/3055 Permalink to this page
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