Effect of digitizing techniques on the fit of implant-retained crowns with different antirotational abutment features

The Journal of Prosthetic Dentistry
Guliz AktasKıvanç Akça

Abstract

The development of computer-aided design/computer-aided manufacturing technology has enabled the fabrication of implant-retained restorations. However, information on the marginal and axial accuracy of restorations fabricated by different digitizing techniques with different antirotational abutment features is not sufficient. The purpose of this in vitro study was to evaluate the influence of digitizing techniques on the fit of implant-retained crowns with 2 antirotational features. An experimental working cast housing a tissue-level dental implant was created. Resin-retained abutments with different antirotational features were connected to the implant. Optical impressions of 2 abutment types were obtained separately with 1 chairside and 2 laboratory approaches. Alumina silicate restorations were milled from chairside optical impressions, and ceramic oxide cores were milled from laboratory optical impressions. Restoration fit was evaluated from axial sections of restorations with silicone materials representing the marginal and axial gaps. Axial and marginal fits were measured on digital photographs of the sectioned specimens with a computer program. Two-way ANOVA was used to compare differences between abutments with 2 differ...Continue Reading

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Citations

Feb 1, 2015·The Journal of the American Dental Association·Tariq F AlghazzawiGregg M Janowski
Apr 12, 2016·Dental Materials : Official Publication of the Academy of Dental Materials·Yuzo OkaHirofumi Yatani
Jul 7, 2017·The Journal of Advanced Prosthodontics·Dong-Yeon KimWoong-Chul Kim
Jul 3, 2020·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Panos PapaspyridakosKonstantinos Chochlidakis
Sep 24, 2020·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Guliz AktasSenay Canay
Dec 14, 2017·BMC Oral Health·Francesco ManganoSilvia Logozzo
Nov 24, 2019·The Journal of Prosthetic Dentistry·Claudine WulfmanChristophe Rignon-Bret

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