Influence of conventional and digital intraoral impressions on the fit of CAD/CAM-fabricated all-ceramic crowns

Clinical Oral Investigations
S BerrenderoGuillermo Pradíes

Abstract

To compare the fit of all-ceramic crowns fabricated from conventional silicone impressions with the fit of all-ceramic crowns fabricated from intraoral digital impressions. Thirty patients with 30 posterior teeth with a prosthetic demand were selected. Zirconia-based ceramic crowns were made using an intraoral digital impression system (Ultrafast Optical Sectioning technology) (digital group, D) and 2-step silicone impression technique (conventional group, C). To replicate the interface between the crown and the preparation, each crown was cemented on its corresponding clinical preparation using ultra-flow silicone. Each crown was embedded in resin to stabilize the registered interface. Specimens were sectioned in buccolingual orientation, and internal misfit was measured at different areas using stereomicroscopy (×40). Data was analysed using Student's t test and Mann-Whitney test (α = 0.05). No statistically significant differences were found (P > 0.05) between two groups. The mean internal misfit and mean marginal misfit were 170.9 μm (SD = 119.4)/106.6 μm (SD = 69.6) for group D and 185.4 μm (SD = 112.1)/119.9 μm (SD = 59.9) for group C. Ceramic crowns fabricated using an intraoral scanner are comparable to elastomer conven...Continue Reading

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Citations

Oct 9, 2016·Journal of Dentistry·F KuhrB Wöstmann
Dec 2, 2017·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Jeison B Carbajal MejíaTakashi Nakamura
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Feb 25, 2020·Journal of Esthetic and Restorative Dentistry : Official Publication of the American Academy of Esthetic Dentistry ... [et Al.]·Bruna N De FreitasWilson Matsumoto
Jul 7, 2017·The Journal of Advanced Prosthodontics·Sibel CetikRamin Atash
Sep 1, 2018·Clinical Oral Investigations·Santiago BerrenderoGuillermo Pradíes
Oct 2, 2020·Progress in Orthodontics·Youn-Gyeong Moon, Kyung-Min Lee
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Jul 14, 2020·Journal of Indian Prosthodontic Society·Hanuman Chalapathi KumarAnirudhan Subha
Oct 10, 2018·Clinical Oral Investigations·Patricia BosniacBernd Wöstmann
Oct 13, 2020·Journal of Prosthodontic Research·Yolanda FreireMaria J Suarez
Feb 25, 2020·The Journal of Prosthetic Dentistry·Irene García-MartínezGuillermo Pradíes
Mar 9, 2021·Korean Journal of Orthodontics·Miran KwonMinho Chang
Oct 1, 2018·Dental Materials : Official Publication of the Academy of Dental Materials·Luciano PraçaJuliana Marotti
Jun 5, 2021·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Passent EllakanyFahad Al-Harbi

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