title: Characterization of the bioactive and mechanical behavior of dental ceramic/sol-gel derived bioactive glass mixtures.
abstract: Dental ceramics can be modified by bioactive glasses in order to develop apatite layer on their surface. One of the benefits of such modification is to prolong the lifetime of the fixed dental prosthesis by preventing the formation of secondary caries. Dental ceramic/sol-gel derived bioactive glass mixture is one of the options for this modification. In the current study, mixtures of dental ceramic/bioactive glass with different compositions were successfully produced. To evaluate their bioactive behavior, prepared samples were immersed in a simulated body fluid at various time intervals. The prepared and soaked specimens were characterized using Fourier transform infrared spectroscopy, X-ray diffractometry and scanning electron microscopy. Since bioactive glasses have deleterious effects on the mechanical properties of dental ceramics, 3-point bending tests were used to evaluate the flexural strength, flexural strain, tangent modulus of elasticity and Weibull modulus of the specimens in order to find the optimal relationship between mechanical and bioactive properties.
authors.affiliation: Materials Science and Engineering Department, School of Engineering, Shiraz University, Shiraz, Iran.
authors.forename: Zahra
authors.initials: Z
authors.lastname: Abbasi
authors.affiliation: Materials Science and Engineering Department, School of Engineering, Shiraz University, Shiraz, Iran.
authors.forename: Mohammad E
authors.initials: ME
authors.lastname: Bahrololoum
authors.affiliation: Dental Materials Department, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran. Electronic address: bagherir@unimelb.edu.au.
authors.forename: Rafat
authors.initials: R
authors.lastname: Bagheri
authors.affiliation: Materials Science and Engineering Department, School of Engineering, Shiraz University, Shiraz, Iran.
authors.forename: Mohammad H
authors.initials: MH
authors.lastname: Shariat
mesh_terms: D001031:Apatites / Q000378:metabolism; D040761:Biomimetic Materials / Q000378:metabolism; D002516:Ceramics / Q000737:chemistry* / Q000378:metabolism; D003764:Dental Materials / Q000737:chemistry* / Q000378:metabolism; D005898:Glass / Q000737:chemistry*; D006801:Humans; D008422:Materials Testing; D055595:Mechanical Phenomena; D013314:Stress, Mechanical
chemical_list: D001031:Apatites; D003764:Dental Materials
keywords: Bioactive behavior; Bioactive glass; Dental ceramics; Sol–gel