Influence of hot pressing on the microstructure and fracture toughness of two pressable dental glass-ceramics

Journal of Biomedical Materials Research. Part B, Applied Biomaterials
Mohammad AlbakryM V Swain

Abstract

Empress 1 and Empress 2 are well-known pressable all-ceramic dental materials that have generated substantial interest for many clinicians and patients. These two materials are reputed to benefit from heat pressing during the laboratory fabrication procedures, leading to better crystal distribution within a glass matrix, and hence an improved strength. The present study aimed to evaluate the effect of heat pressing on fracture toughness, microstructural features, and porosity. Results showed that Empress 1 had similar fracture toughness values before the pressing procedure, after it, and after the repressing procedure. The microstructural features were also similar among these specimens, but a more uniform distribution of leucite crystals was observed following the pressing and repressing procedures. Empress 2 demonstrated two different fracture toughness values. This was associated with the alignment of lithium disilicate crystals that occurred after the pressing and repressing procedures, which led to different indentation induced crack lengths, depending upon whether cracks propagated parallel to or perpendicular to the aligned crystals, the former having lower toughness than those that propagated in the perpendicular direct...Continue Reading

References

Jan 7, 1975·British Dental Journal·D W Jones, H J Wilson
Jun 1, 1989·Journal of Dental Research·K J Anusavice, R B Lee
Apr 1, 1986·Dental Materials : Official Publication of the Academy of Dental Materials·R MorenaC W Fairhurst
Mar 1, 1996·The Journal of Nihon University School of Dentistry·H NakamotoT Igarashi
Aug 1, 1996·The Journal of Prosthetic Dentistry·W C Wagner, T M Chu
Mar 18, 1999·Journal of Dentistry·M J CattellE Lynch
Jul 18, 2000·Journal of Biomedical Materials Research·W HölandV Rheinberger
Sep 1, 2000·Dental Materials : Official Publication of the Academy of Dental Materials·C M GormanR G Hill
Dec 22, 2000·Dental Materials : Official Publication of the Academy of Dental Materials·M J CattellE Lynch
Feb 24, 2001·Journal of Biomedical Materials Research·I L DenryH O Colijn
Jan 5, 2002·Dental Materials : Official Publication of the Academy of Dental Materials·K C Cheung, B W Darvell
Apr 12, 2003·The Journal of Prosthetic Dentistry·Mohammad AlbakryMichael Vincent Swain
May 3, 2003·Journal of Dentistry·Mohammad AlbakryMichael Vincent Swain

❮ Previous
Next ❯

Citations

Dec 30, 2008·Journal of Materials Science. Materials in Medicine·Carla Castiglia GonzagaWalter Gomes Miranda
Oct 12, 2013·Dental Materials : Official Publication of the Academy of Dental Materials·Michael V Swain
Feb 4, 2014·The Journal of Prosthetic Dentistry·Pinar KursogluEnder Kazazoglu
Jul 24, 2012·Dental Materials : Official Publication of the Academy of Dental Materials·Isabelle Denry
Jul 25, 2009·Journal of the Mechanical Behavior of Biomedical Materials·E ApelW Höland
Aug 7, 2008·Journal of Oral Rehabilitation·K-H ChungD C-N Chan
Nov 13, 2008·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Lila NikkolaNureddin Ashammakhi
Nov 22, 2011·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Seçil Karakoca NemliTülay Tıraş
Aug 8, 2006·Dental Materials : Official Publication of the Academy of Dental Materials·Hang WangAlbert J Feilzer
Jul 28, 2015·Dental Materials : Official Publication of the Academy of Dental Materials·Fatima Al MansourMichael J Cattell
Jul 1, 2014·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Sheila Pestana PassosCarlos Flores-Mir
Jan 27, 2015·Journal of the Mechanical Behavior of Biomedical Materials·Maico Dutra de AraújoPaulo Francisco Cesar
Oct 10, 2014·Journal of the Mechanical Behavior of Biomedical Materials·Xuehua TangHirofumi Yatani
Dec 28, 2010·Dental Materials : Official Publication of the Academy of Dental Materials·Carla Castiglia GonzagaHumberto Naoyuki Yoshimura
May 3, 2016·Dental Materials : Official Publication of the Academy of Dental Materials·Rania BadawyLaura E Tam
Sep 17, 2016·International Journal of Dentistry·Fernando ZaroneRoberto Sorrentino
Aug 23, 2016·Dental Materials Journal·Tonino TrainiSergio Caputi
Oct 13, 2007·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Moustafa N AboushelibAlbert J Feilzer
Feb 14, 2006·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Paulo Francisco CesarLeondardo Eloy Rodrigues Filho
Aug 3, 2010·Operative Dentistry·Lucas Z NavesLourenço Correr-Sobrinho
Jul 6, 2019·BMC Oral Health·Fernando ZaroneRoberto Sorrentino

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Journal of Biomedical Materials Research. Part B, Applied Biomaterials
I L Denry, J A Holloway
Journal of Biomedical Materials Research. Part B, Applied Biomaterials
I L Denry, J A Holloway
Journal of Prosthodontics : Official Journal of the American College of Prosthodontists
Mohammad AlbakryM V Swain
© 2021 Meta ULC. All rights reserved