Marginal adaptation of three-unit fixed partial dentures constructed from pressed ceramic systems

British Dental Journal
C F J StappertJörg Rudolf Strub

Abstract

This study compares the marginal accuracy of posterior metal ceramic (MC), all-ceramic IPS Empress 2 and experimental pressed ceramic (EPC-VP 1989/4) three-unit fixed partial dentures (FPD), before and after luting and after thermo-mechanical fatigue in a dual-axis chewing simulator. Caries-free human teeth (n=160) were used as abutments for the fabrication of eighty posterior three-unit FPD, divided into two test-groups, IPS Empress 2 and EPC, of 32 samples each and one control group of 16 samples metal ceramic FPD. All FPD were cemented with Variolink II dual-curing resin cement. Half of the samples in each group were exposed to a dual-axis chewing simulator. The geometric mean marginal gap values (microm, before cementation, after cementation and after thermo-mechanical fatigue) amounted to 53, 63 and 62 for the ceramic metal FPD, 57, 71 and 68 for the Empress 2 FPD and 55, 67 and 68 for the EPC FPD. In all groups a statistically significant increase in marginal gap width was observed after cementation. The effect of functional loading in the chewing simulator on marginal gap was not significant. Marginal gap was lowest in the control group but differences with all-ceramic materials were small in all evaluation stages. Withi...Continue Reading

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Citations

Jan 6, 2011·Journal of Oral Science·Futoshi KomineHideo Matsumura
Oct 17, 2009·Operative Dentistry·Muharrem ComlekogluCelal Artunc
Feb 5, 2008·Clinical Implant Dentistry and Related Research·Wael AttJörg Rudolf Strub
May 4, 2011·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Sharifa Abdullah Alshehri
Jul 28, 2005·The Journal of Prosthetic Dentistry·Christian F J StappertJorg R Strub
Oct 30, 2014·The Journal of Advanced Prosthodontics·Jun-Tae Hong, Soo-Yeon Shin
Sep 21, 2013·The Journal of Advanced Prosthodontics·Tae-Jin SongIn-Sung Yeo
Oct 6, 2018·European Journal of Oral Sciences·Kosuke KusabaHideo Matsumura
Oct 3, 2006·The Journal of Oral Implantology·Zeev Ormianer, Guido Schiroli
Jan 8, 2013·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Noor A NawaflehMuhanad M Hatamleh
Apr 18, 2018·Clinical Oral Investigations·Ingrid PerozNiko Kopsahilis
Jan 15, 2011·Acta Odontologica Scandinavica·Deyar Jallal Hadi MahmoodPer Vult Von Steyern

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