@article{ijdsr2020846,
author={Kara, Recep},
title={Comparison of Marginal and Internal Fit of Different CAD/CAM Copings},
journal={International Journal of Dental Sciences and Research},
volume={8},
number={4},
pages={105--111},
year={2020},
url={http://pubs.sciepub.com/ijdsr/8/4/6},
issn={2333-1259},
abstract={This study compared the internal and marginal gap between CAD/CAM copings to determine the clinical acceptability.<i> </i>Hundred dental stone duplications of a metal major maxillary molar die were fabricated and separated into five. All copings were produced by milling and laser sintering method in the form of twenty groups. At x 180 magnification, marginal and internal gaps of each coping were measured at 75 points, and a total of 7500 measurements were performed for six regions on digital photographs taken with video microscope. Data were analyzed using one-way analysis of variance (ANOVA) and post hoc test (Tukey and Bonferroni). The internal and marginal gaps of the milling group were significantly larger than the laser sintering group (<i>P</i> &lt; 0.05). The results of this in vitro study show that CAD/CAM milled Co-Cr copings exhibit larger marginal and internal gap values than copings by laser sintering method.<i> </i>All copings were presented clinically acceptable marginal and internal accuracy. Milling and laser sintering systems are suitable for manufacturing of copings.},
doi={10.12691/ijdsr-8-4-6}
publisher={Science and Education Publishing}
}