Results 291 to 300 of about 5,176 (336)
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Demineralization effects of 10 percent carbamide peroxide
Journal of Dentistry, 1996The purpose of this in vitro study was to measure the amount of calcium lost from enamel exposed to a 10% carbamide peroxide solution.Nine teeth (3 incisors, 2 premolars, 4 molars) were sectioned to serve as paired test and control specimens. Each tooth half was coated with wax, leaving a uniform 3 mm x 4 mm window of exposed enamel.
Michael S. McCracken, Van B. Haywood
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Effects of carbamide peroxide on dental luting agents
Journal of Endodontics, 1992Vital bleaching of natural dentition using a 10% carbamide peroxide in solution may adversely effect restorative materials such as the luting agents. The purpose of this study is to examine surface structure and alterations of atomic weight percentages of elements in (a) zinc phosphate, (b) glass-ionomer, and (c) resin cements after contact with the ...
Beverly Giammara +2 more
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Effect of carbamide peroxide and hydrogen peroxide on enamel surface: an in vitro study
Clinical Oral Investigations, 2010The aim of the study was to investigate changes in the micromorphologyl and microhardness of the enamel surface after bleaching with two different concentrations of hydrogen peroxide (HP) and carbamide peroxide (CP). Bovine enamel samples were embedded in resin blocks, and polished.
Abouassi, Thaer +2 more
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Penetration of the pulp chamber by carbamide peroxide bleaching agents
Journal of Endodontics, 1992Hydrogen peroxide readily penetrates the pulp chamber of freshly extracted teeth. This study was undertaken to determine whether carbamide peroxide also penetrates the pulp chamber. Freshly extracted teeth were sectioned 2 to 3 mm apical to the cementoenamel junction and the coronal pulpal tissue was removed.
Jonathan S. Cooper +2 more
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A CLINICAL EVALUATION OF CARBAMIDE PEROXIDE AND HYDROGEN PEROXIDE WHITENING AGENTS DURING DAYTIME USE [PDF]
The Journal of the American Dental Association, 2000 Vital tooth bleaching for esthetic reasons has gained in popularity during the last few years. However, few studies have investigated the efficacy of daytime bleaching products. The purpose of this double-blind in vivo study was to evaluate the efficacy of 20 percent carbamide peroxide, or CP, and 7.5 percent hydrogen peroxide, or HP, during daytime ...
George J. Eckert +3 more
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Effects of three concentrations of carbamide peroxide on the structure of enamel
Journal of Oral Rehabilitation, 2000Carbamide peroxide bleaching agents have raised important questions on their potential adverse effects on the structure of enamel. The purpose of this study was to examine the effects of three carbamide peroxide bleaching agents in different concentrations (10, 16 and 35%) on the structure of enamel.
Sevil Gurgan, U Oltu
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Antibacterial activity of 10% carbamide peroxide bleaching agents
Journal of Endodontics, 1996The antibacterial activity of three commercial 10% carbamide peroxide bleaching agents (Nite White, Karisma, and Opalescence) on Streptococcus mutans, Streptococcus mitis, Streptococcus sanguis, Lactobacillus casei, and Lactobacillus acidophilus was examined. Chlorhexidine (0.2%) was used as a positive control.
Sevil Gurgan, R. Alaçam, S. Bolay
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Remineralization Potential of a Fluoridated Carbamide Peroxide Whitening Gel
Journal of Esthetic and Restorative Dentistry, 2006ABSTRACTPurpose: Little knowledge exists regarding the potential remineralizing benefits of adding fluoride to carbamide peroxide‐based whitening gels. The aim of this project was to evaluate whether a whitening system with fluoride will remineralize previously demineralized enamel.Materials and Methods: Twenty‐four extracted teeth were sectioned ...
Darrin Simmons +2 more
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Radicular peroxide penetration from carbamide peroxide gels during intracoronal bleaching
International Endodontic Journal, 2008AbstractAim To evaluate and compare radicular peroxide diffusion from different concentrations of carbamide peroxide bleaching gels.Methodology Fifty maxillary premolar teeth were separated into five groups (n = 10). Standardized endodontic access cavities were prepared in the occlusal surfaces, and the root canals were prepared using a step back ...
O. Gökay +3 more
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Effect of a carbamide peroxide paste on gingival inflammation
The Journal of the American Dental Association, 1963Although dental clinicians are acutely aware of the prevalence of periodontal disease among their own patients, the importance of these conditions as a major public health problem is often overlooked. Some measure of the scope of the prob lem is furnished by a 1954 epidemiologi cal study1 which disclosed that 84 per cent of the United States ...
Alan S. Pomerance, David Tanchester
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