title: Semi-quantitative analysis of early microleakage around amalgam restorations by fluorescent spectrum method: a laboratory study.
abstract: Rhodamine B, a fluorescent substance, was used as a tracer to investigate in vitro early microleakage from around amalgam restorations in machinable mica glass-ceramic after thermal stress. Five types of amalgam, i.e., low-copper spherical, low-copper lathe-cut, high-copper admixture, high-copper lathe-cut, and high-copper spherical, were examined in the present study. The results indicated that early microleakage from alloys of lathe-cut particles was lower than that from alloys of spherical particles in both low-copper and high-copper amalgam restorations. A high-copper amalgam with a mixture of lathe-cut and spherical particles tended to exhibit the lowest early microleakage.
authors.affiliation: School of Dentistry, Aichi-Gakuin University.
authors.forename: J Y
authors.initials: JY
authors.lastname: Kim
authors.forename: Y
authors.initials: Y
authors.lastname: Takahashi
authors.forename: M
authors.initials: M
authors.lastname: Kito
authors.forename: Y
authors.initials: Y
authors.lastname: Morimoto
authors.forename: J
authors.initials: J
authors.lastname: Hasegawa
mesh_terms: D002516:Ceramics; D003300:Copper; D003723:Dental Amalgam / Q000737:chemistry*; D001840:Dental Bonding; D003763:Dental Leakage / Q000175:diagnosis / Q000517:prevention & control*; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D012235:Rhodamines; D013050:Spectrometry, Fluorescence
chemical_list: D012235:Rhodamines; D003300:Copper; D003723:Dental Amalgam; C029773:rhodamine B