title: Fabrication of all-ceramic crowns by a new method.
abstract: A new method of all-ceramic production using alumina coping has been developed. The present study investigates the influence of secondary firing (glass infiltration firing) conditions. Samples of porcelain build-up without secondary firing were also assessed. The suitability of coping that included secondary firing was found to be affected by the rate of temperature increase during the secondary firing. However, cracking developed in the fired porcelain if porcelain was built up onto secondarily-fired coping. In contrast, cracking did not occur with coping that was not secondarily fired. The bending strength after porcelain build-up was 70 MPa or higher, suggesting the possibility of clinical applications as an anterior crown. These findings establish that this is method of producing all-ceramic crowns that allows for low-cost manufacture in a short period of about 1 h.
authors.affiliation: Department of Geriatric Dentistry, Osaka Dental University.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Masuda
authors.forename: Kazutoshi
authors.initials: K
authors.lastname: Kakimoto
authors.forename: Kazuya
authors.initials: K
authors.lastname: Takahashi
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Komasa
mesh_terms: D000537:Aluminum Oxide; D002516:Ceramics; D003442:Crowns; D003776:Dental Porcelain; D008422:Materials Testing
chemical_list: D003776:Dental Porcelain; D000537:Aluminum Oxide