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An in vivo comparison was made of three different types of restorative resins: a conventional composite resin, a chemically cured microfilled resin, and a small-particle, glass-filled, visible light-cured composite resin. Twenty-eight sets of three restorations were placed 20 patients and examined using the Ryge rating system. All resins performed well and(More)
Orthodontic wire bonded directly to teeth with a resin adhesive system has been used to establish anchor units for procedures in orthodontics as well as for splinting teeth in other disciplines. This procedure can save the cost and time of placing a bracket. In addition, several different resin systems have been used for this procedure as well as for(More)
This investigation examines the influence of potential sources of contamination on the resin bond strength of a base metal alloy. Sixty specimens were cast in a base metal alloy and etched. Composite resin cylinders were bonded to six groups of ten specimens each and tested for shear bond strength using a testing machine at a strain rate of .5 mm/min. Five(More)
Ten dental units were surveyed for microbial contamination of the waterlines. All units were found to be colonized with bacteria and fungi at levels ranging from 9.0 X 10(4) to 4.1 X 10(5) CFU/mL. Undiluted povidone-iodine 10%, loaded in five experimental units for 12 hours prevented recovery of microorganisms for 3 to 14 days when used in combination with(More)
PURPOSE To investigate in vivo the relationship of occlusal stress factors, periodontal health status, and acidic dietary patterns to the presence of non-carious cervical lesions (NCCL) in a convenience sample of undergraduate clinic, adult dental patients. MATERIALS AND METHODS Forty three subjects who met the entry criteria were admitted into the study;(More)
Pootjes, Christine F. (The Pennsylvania State University, University Park), R. B. Mayhew, and B. D. Korant. Isolation and characterization of Hydrogenomonas facilis bacteriophages under heterotrophic growth conditions. J. Bacteriol. 92:1787-1791. 1966.-We have isolated five strains of bacteriophage specific for Hydrogenomonas facilis. The host range of the(More)
An experimental system of laboratory infection control was tested, using 76 dentures from 40 volunteer patients. The dentures were cleansed on entering and again on leaving the laboratory. To evaluate the effectiveness of disinfection, the dentures were cultured as they were received from the patient, after the first cleansing, after polishing, and after(More)
The nature of tenure eligibility requirements for faculty has changed in recent years. The purpose of this study was to review the current tenure policies among U.S. dental schools. A five-page, sixteen-item survey was mailed to fifty-three U.S. dental schools. The survey produced thirty-seven completed questionnaires for a response rate of 70 percent.(More)