![]() The intaglio surface trueness is an essential aspect in the clinical performance of CRDPs.Īrtificial saliva CAD/CAM Complete denture prosthesis Complete removable dental prosthesis Dental materials Injection-molding PMMA resin Trueness.Want your indirect restorations like crowns, inlays and onlays to stay on? Of course! None of us, patients included of course, want to have to deal with restorations that come off. Additional research is warranted on material-related aspects, cost-effectiveness, clinical performance, patient-centered outcomes, as well as other CAD/CAM techniques for CRDP fabrication. In this in vitro study, the trueness of the intaglio surface of all three investigated techniques seems to remain within a clinically acceptable range. However, for all three techniques, 80 % of all deviations of the complete intaglio surface after incubation in saliva were below 0.1 mm. The 80-20 % /2 median quantile of the CAD/CAM group demonstrated the highest variability of individual readings, probably due to the size of the milling instrument. After incubation, only the conventional CRDPs showed a significant improvement in trueness of the entire intaglio surface (p = 0.0044), but improved trueness was confirmed for all three techniques in most individual regions of interest. Users should refer to the original published version of the material for the full abstract.Non-parametric tests were used with a level of significance set at p < 0.05.Īt baseline, there was no difference in the trueness of the total intaglio surfaces between the groups. No warranty is given about the accuracy of the copy. However, users may print, download, or email articles for individual use. Copyright of Journal of Advanced Prosthodontics is the property of Korean Academy of Prosthodontics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission.The full-contour crowns of FSZ as well as 4YZ or 5YZ with high-speed sintering were clinically acceptable, in terms of intaglio surface trueness, antagonist's wear volume loss, and fracture resistance after simulated mastication. Both the type of zirconia and aging showed statistically significant effects on fracture resistance ( P <. No significant P in wear volume loss of antagonists were detected among the groups ( P >. The intaglio surface trueness measured at four different areas of the crown was less than 50 µm, regardless of the type of zirconia. Effect of the zirconia type and aging on fracture resistance of crowns was tested using two-way ANOVA. The trueness values were analyzed with Welch's ANOVA, and the wear volume loss with the Kruskal-Wallis tests. Before and after chewing, the fracture load was measured for each group. Half of the specimens were aged for 120,000 cycles in the chewing simulator, and the wear volume loss of antagonist was measured. The intaglio surface trueness of the crowns was evaluated at the inner surface, occlusal, margin, and axial areas and reported as root-meansquare, positive and negative average deviation. A total of 42 zirconia crowns were separated into three groups: FSZ, 4YZ, and 5YZ (n = 14). ![]() This analysis aimed to evaluate the intaglio surface trueness, antagonist's wear volume loss, and fracture resistance of full-contour crowns of (Y, Nb)-stabilized fully-sintered zirconia (FSZ), 4 mol% or 5 mol% yttria-stabilized partially sintered zirconia (4YZ or 5YZ) with high-speed sintering. ![]()
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