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| Q.
Do increased concentrations of carbamide peroxide affect increased pulpal
sensitivity?
A. No. There is no evidence of increased gradient ratio of pulpal sensitivity. (2,4) Q. Do increased concentrations of carbamide peroxide increase soft tissue sensitivity? A. No. If there is a gingival abrasion or cut, pain response is axiomatic regardless of concentration. Normal soft tissue has no negative response. Q. What percentage of people experience pulpal sensitivity? A. 34% of dentists surveyed who bleached with all 13 major brands, of the various concentrations, reported pulpal sensitivity. (3) Q. What is the optimal bleaching treatment time? A. 30 minute treatments. On the average, of the 13 major brands tested, approximately 50% of the active ingredient is depleted in 30 minutes and 70% in 60 minutes. Obviously fresh 30 minute applications respect your patient's time. (3) Q. Do "low and slow" bleaching concentrations verses "high and fast" affect patient compliance? A. "High and fast" concentrations shorten bleaching times, which directly bolsters patient compliance -- rapid noticeable change incites behavior encouragement. (4) Q. Does short time bleaching allow simultaneous dual arch whitening? A. Yes. Single arch bleaching is passé with the advent of Lustredent's fast action whitening. Q. Is there any good reason to extend bleaching trays onto soft tissue? A. There is no good reason to extend bleaching trays onto soft tissue -- scalloping takes only minutes. (1,5) Q. Is microhardness impacted by bleaching? A. The micro-hardness of bleached enamel is similar to that of unbleached enamel. (7) Q. Is there change in morphology of enamel when treated with carbamide peroxide? A. Scanning electron microscopy studies of enamel surfaces treated with carbamide peroxide bleaching agents have shown little or no change in morphology. (6) Q. Which bleaching material demonstrates the least fade back? A. Carbamide peroxide bleaching has less fade back and fewer side effects than that of hydrogen peroxide. (3) Q. Is short treatment time or long treatment time safest? A. Bleaching for a minimal amount of time offers an extra measure of safety. (5) Q. Statistically, do dentists prefer bleaching with carbamide peroxide or hydrogen peroxide? A. Dentists overwhelmingly prefer carbamide peroxide over hydrogen peroxide. Q. Does it matter if the bleaching gel is water based? A. Water based products decrease dehydration and short time bleaching hastens rehydration. Q. Are reservoirs advantageous in bleaching trays? A. Not for short time bleaching. The tray itself and interproximal spaces and soft tray "flex" is reservoir enough. The patient swallows substantially less bleaching gel via maximum utilization of minimal volume dosage (i.e. Õ cc). Q. Does chairside bleaching offer advantage to the patient or dental office? A. No. Lustredent's fast action, short bleaching time virtually eliminates the inconvenience of the chairside procedures as well as the economics of saving valuable chair time. 1.
Van Haywood DMD 2. James C. Broome
DDS 3. Gordon J. Christensen
DDS 4. Van Haywood
DMD 5. Reality 1996 6. Van Haywood
DMD, Leech T. Heymann 7. D. Murchison,
D. Charlton, B. Moore |