Evaluation of Influence of Finish line Design on Marginal Discrepancy of All-ceramics Lithium disilicate Crown restorations using μ-CT

Yajvinder,; Gulati, Vishal; Agrawal, A. K.; Singh, Balwant

doi:10.1088/1757-899x/802/1/012003

Cited by 2 publications

(1 citation statement)

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“…Marginal fit and internal fit depends on both clinical, and laboratory procedures and numerous parameters, but this in vitro study investigated only the laboratory procedures, represented by additive manufacturing (AM) technologies, lately entered in the dental field, compared to traditional casting and CAD/CAM milling [16,31].…”

Section: Discussionmentioning

confidence: 99%

Adaptability Evaluation of Metal-Ceramic Crowns Obtained by Additive and Subtractive Technologies

2020

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(1) Background: Traditional metal-ceramic restorations are considered as a standard in the evaluation of new technologies. A critical factor in their longevity is represented by their adaptability; The purpose of this study was to evaluate the marginal and internal gap of ceramic-fused to metal crowns with frameworks obtained by additive manufacturing (AM) technologies and the influence of veneering process on their fit; (2) Methods: Metal-ceramic crowns have been produced by conventional lost-wax technology (T), digital milling (F), selective laser sintering (SLS) and selective laser melting (SLM). The adaptability was assessed using silicone replicas before and after ceramic veneering; (3) Results: The best values were obtained for the milled group followed closely by SLM and SLS, and a significantly higher gap for casted copings. The veneering process did not significantly influence the adaptability of the crowns, regardless of the manufacturing process used for frameworks. The present study promotes additive technologies (AT) as a fast, efficient, and cost-effective alternative to traditional technology. There are fewer steps in which errors can occur when digital technologies are used and the risk of distortion is diminished. (4) Conclusions: CAD/CAM technologies, both additive and subtractive, represent an excellent option to produce time-effective, precise metal-ceramic crowns with excellent adaptation.

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Section: Discussionmentioning

confidence: 99%