Clinical marginal and internal fit of metal ceramic crowns fabricated with a selective laser melting technology

The Journal of Prosthetic Dentistry
Zhuoli HuangXiuyin Zhang

Abstract

Selective laser melting (SLM) technology has been introduced to fabricate dental restorations. However, the fit of these restorations still needs further study. The purpose of this in vivo investigation was to compare the marginal and internal fit of SLM metal ceramic crowns with 2 lost-wax cast metal ceramic crowns and to evaluate the influence of tooth type on the marginal and internal fit of these crowns. A total of 330 metal ceramic crowns were evaluated. The metal copings were fabricated with SLM Co-Cr, cast Au-Pt, and cast Co-Cr alloy (n=110). The marginal and internal gaps of crowns were recorded by using a replica technique. The anterior and premolar replicas were sectioned 2 times, and molar replicas were sectioned 4 times. The marginal and internal gap width of each cross section was examined by stereomicroscope at ×30 magnification. Two-way analysis of variance was performed to identify the statistical difference among the groups. The marginal fit of the SLM Co-Cr group (75.6 ±32.6 μm) was not different from the cast Au-Pt group (76.8 ±32.1 μm) (P>.05) but was better than the cast Co-Cr group (91.0 ±36.3 μm) (P<.01). No significant difference was found among the SLM Co-Cr group (127.3 ±45.8 μm), cast Au-Pt group (129...Continue Reading

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Citations

Jul 28, 2015·The Journal of Prosthetic Dentistry·Harald NesseMarit Øilo
Jul 28, 2016·The Journal of Prosthetic Dentistry·Du-Hyeong Lee
Nov 9, 2016·Journal of Prosthodontic Research·Toyoki NakataChikahiro Ohkubo
Dec 22, 2016·Periodontology 2000·Tim JodaUrs Brägger
Dec 16, 2017·Acta Biomaterialia Odontologica Scandinavica·Maria KassapidouCarina B Johansson
Jan 23, 2019·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Bengisu Yildirim, Gamze Paken
Feb 13, 2018·Journal of Prosthodontic Research·Mana ToriiChikahiro Ohkubo
Sep 24, 2020·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Guliz AktasSenay Canay
Feb 23, 2020·Biomaterial Investigations in Dentistry·Per Svanborg, Lars Hjalmarsson
Sep 29, 2020·Frontiers in Bioengineering and Biotechnology·Liang DuYuangang Liu
Feb 6, 2020·Biomaterial Investigations in Dentistry·Per Svanborg
Nov 22, 2020·Dental Materials : Official Publication of the Academy of Dental Materials·Yuka KajimaTakayuki Yoneyama
Mar 23, 2021·The Journal of Prosthetic Dentistry·Fernanda Furtado PirasJosé Henrique Rubo
Jun 3, 2021·Journal of Clinical Medicine·Josef SchweigerJan-Frederik Güth

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