title: Microstructure and homogeneity of dental porcelain frits.
abstract: The microstructure and homogeneity of three commercial dentin and incisal unfired porcelain frits (one conventional and two ultra-low fusing types, fused-to metal were analyzed by X-ray diffractometry, scanning electron microspectroscopy, and wavelength- and energy dispersive X-ray microspectroscopy. The average contents of tetragonal and cubic leucite for the conventional and one of the ultra-low fusing type frits were 20.1-22.6 wt% and 0-2.6 wt%, respectively, whereas those of another of the ultra-low fusing type frits were about 11.5-11.6 wt% and 2.9-4.6 wt%, respectively. The conventional type frits seemed to be admixtures of three kinds of glass frits. One of the ultra-low fusing type frits seemed to be an admixture of four kinds of glass frits. Another ultra-low fusing frits seemed to be only one kind of glass frit dispersed with small size, less than 1 micron, leucite crystals. There were no remarkable differences in microstructure and homogeneity between dentin and incisal porcelain frits in each brand.
authors.affiliation: Department of Dental Material Science, School of Dentistry, Aichi-Gakuin University, Nagoya, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Ban
authors.forename: K
authors.initials: K
authors.lastname: Matsuo
authors.forename: N
authors.initials: N
authors.lastname: Mizutani
authors.forename: H
authors.initials: H
authors.lastname: Iwase
authors.forename: T
authors.initials: T
authors.lastname: Kani
authors.forename: J
authors.initials: J
authors.lastname: Hasegawa
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry; D003776:Dental Porcelain / Q000737:chemistry*; D004577:Electron Probe Microanalysis; D016876:Metal Ceramic Alloys / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D015394:Molecular Structure; D014961:X-Ray Diffraction
chemical_list: D000538:Aluminum Silicates; D016876:Metal Ceramic Alloys; D003776:Dental Porcelain; C078519:leucite