Notizie da 27 fonti
BOSTON â Fractional laser-assisted photodynamic therapy can effectively treat actinic keratoses in...
Publication date: Available online 23 May 2013 Source: Journal of Dentistry Author(s): M.A. Ablal , A.A. Adeyemi , F.D. Jarad Objectives The aim of this study was to investigate the whitening properties and rate of bleaching action of chlorine dioxide and compare them with those of hydrogen peroxide of similar concentration. Methods Sixty bovine central incisor crowns were ground and polished until flat surfaces were obtained. The crowns were subjected to extensive staining cycles of artificial saliva, chlorehexidine and tea before being randomly assigned to three groups; chlorine dioxide (ClO2), hydrogen peroxide (H2O2) and deionised water (H2O). The crowns in each group were subjected to seven 2min exposure cycles in addition to an extra 30min cycle. CIE LAB spectrophotometric measurements were taken at baseline, after each 2min, and each extended 30min bleaching cycle. Results L* for ClO2 specimens was significantly higher only after the first 2min cycle (p<0.001) while for H2O2 specimens, L* significantly increased after the first two cycles (p<0.001) and continued to increase, at a slower rate, until the end of the treatment cycles. ΔE was significantly greater within H2O2 than within ClO2 specimens (p<0.001). Conclusion Chlorine dioxide whitens teeth at a faster rate than hydrogen peroxide. Specimens treated with chlorine dioxide were significantly lighter than those treated with hydrogen peroxide at the end of the first 2min application cycle, however, extended exposures did not enhance colour.
Grana, Volume 52, Issue 2, Page 81-92, June 2013.
Grana, Volume 52, Issue 2, Page 136-146, June 2013.
Grana, Volume 0, Issue 0, Page 1-11, Ahead of Print.
WASHINGTON â Doctors need to step up their efforts to counsel patients on smoking cessation. That...
Grana, Volume 0, Issue 0, Page 1-10, Ahead of Print.
More than half of the nationâs physicians and other health care providers use electronic health...
AIDS Research and Human Retroviruses , Vol. 0, No. 0.
AIDS Research and Human Retroviruses , Vol. 0, No. 0.
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