The impact of different Milling Machines on Marginal Fit Discrepancies of Lithium Disilicate Crowns

The goal of this study was to determine the level of various discrepancies in all-ceramic IPS e. max lithium disilicated crowns milled with three different milling machines. A 3D printed Geller model with a preparation for all ceramic crown was scanned, then the digital design was created and 24 lit...

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Veröffentlicht in:Revista de chimie (Bucuresti) 2020-07, Vol.71 (6), p.452-459
Hauptverfasser: Topala, Florin I., Rivis, Mircea, Hategan, Simona I., Secosan, Andreea, Rotar, Raul, Bratu, Emanuel, Jivanescu, Anca
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Sprache:eng
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Zusammenfassung:The goal of this study was to determine the level of various discrepancies in all-ceramic IPS e. max lithium disilicated crowns milled with three different milling machines. A 3D printed Geller model with a preparation for all ceramic crown was scanned, then the digital design was created and 24 lithium disilicate crowns were milled using three different milling machines: Plan mill 40S (Planmeca, Helsinki, Finland), Cerec MC XL (Sirona GmbH, Germany), and one laboratory milling machine Imes-Icore 650i (Coritec, Eiterfeld, Germany). Among the three groups, the highest marginal fit accuracy was displayed by crowns fabricated by laboratory milling machine Imes-Icore 650i, followed by chairside Plan mill 40S and Cerec MC XL. The results of our study shows that llithium disilicate crowns fabricated by a laboratory milling and 2 chair-side milling machines present marginal accuracy in the acceptable clinical range.
ISSN:0034-7752
2668-8212
DOI:10.37358/RC.20.6.8211