126-130 JCD 18.4 Schemehorn:01-04 JCD 17.1 Harpenau
نویسنده
چکیده
Objective: This in vitro study examined the ability of Forté, based upon co-catalyzed calcium peroxide and carbamide peroxide (CaCP), to remineralize and recalcify pre-existing incipient lesions in tooth enamel, renewing the teeth while they are being whitened. • Methodology: Artificial lesions to 70-100 micrometers depth were created, simulating in vivo conditions. Calcium concentrations were determined by micro drill, and surface hardness was determined using a Leco Indenter. Remineralization and calcium uptake were determined by comparing the surface hardness and calcium concentration of subsurface incipient lesions in extracted human teeth before and after a whitening treatment, and also comparing to a non-whitening control (saliva). • Results: Specimens treated with the CaCP whitening gels had a significant calcium uptake of 33,000 micrograms of calcium/gram of enamel measured to a depth of 100 micrometers, and had corresponding increases in surface hardness, from a Vickers Hardness Number of 40 VHN to a value of 83 VHN. • Conclusion: Recalcifying incipient lesions to clinically significant depths, and improving the surface hardness of enamel while performing a popular cosmetic bleaching service, compares favorably with losses of calcium and decreased enamel surface hardness, as reported in studies of many conventional whitening agents. (J Clin Dent 18:126–130, 2007) Use of a Calcium Peroxide Whitening Agent for Remineralization and Recalcification of Incipient Lesions
منابع مشابه
101-107 JCD 18.4 Biesbrock-2:01-04 JCD 17.1 Harpenau
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Department of Organismic Biology, Ecology, and Evolution, University of California, 621 Charles E. Young Drive South, Los Angeles, CA 90095-1606, USA (DTB, JCD) The Cooperative Research Centre for the Conservation and Management of Marsupials, Macquarie University, Sydney NSW 2109, Australia (DTB, JCD) Division of Botany and Zoology, Australian National University, Canberra ACT 0200, Australia ...
متن کاملNon contiguous-finished genome sequence and description of Clostridium jeddahense sp. nov.
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This paper describes an adaptive space-time receiver with joint channel and data estimation (JCD) to combat time-varying multipath channels in the presence of undesired co-channel interference (CCI). The receiver uses a colored Gaussian metric in the sequence detection to suppress the CCI. The proposed scheme also uses the knowledge of the transmit filter for improved channel estimation to enha...
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