Browsing by Author "Osman, Y."

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    Insights into the clinical effectiveness of whitening products - Part 1: Dentist-supervised-at-home bleaching product
    (SADA, 2016) Grobler, Sias Renier; Osman, Y.
    This section of the report is about the success of a dentist-supervised-at home tooth whitener, giving the results of a clinical study. Opalescence PF 10% was applied for 14 days and the colour change followed over a 14 month period. It could be concluded that: a) Opalescence is a good tooth whitener, b) the time of re-bleaching should actually depend on the colour choice expressed by the patient. Overall re-bleaching should only be done after six months and not on a monthly basis, otherwise enamel damage may become a problem. Remember that peroxide, which is responsible for the bleaching process, is a strong oxidizing agent. Furthermore, A2 and darker teeth showed more aesthetically observable colour changes.
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    Insights into the clinical effectiveness of whitening products. Part 2 Dentist-supervised-at-home LED gel bleaching product
    (SADA, 2017) Osman, Y.; Grobler, Sias Renier
    This section of the report is about the success of a dentist-supervised-at home LED gel tooth whitener, giving the results of a clinical study. The product (LED light gel with 44% carbamide peroxide) was applied by the dentist on teeth 11 and 21 in the chair for 10 minutes. The process was repeated three times, followed by an athome treatment period (30 minutes/day) of 14 days with 35% carbamide peroxide. The treatment was as outlined by the manufacturers. The L* value improved (more white) after the in-chair treatment with the LED system but showed no further significant increase after the 14 day at-home treatment. However, the b* value improved (less yellow), after both the LED treatment and 14 day athome treatment. The a* value did not improve significantly throughout the treatments. The LED system provides inchair tooth whitening after a 14 day treatment although not as effectively as does Opalescence.