The Journal of clinical dentistry
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Randomized Controlled Trial Comparative Study Clinical Trial
Efficacy and tolerability of an intraoral benzocaine patch in the relief of spontaneous toothache pain.
In this randomized, double-blind, placebo-controlled clinical trial, the effectiveness and tolerability of a novel intraoral benzocaine patch was evaluated in 60 patients who presented to the Dental School's emergency clinic with spontaneous toothache pain of at least a moderate intensity. ⋯ Although the results of the present study were promising, further research on this novel delivery system of benzocaine is warranted to firmly establish efficacy in patients with spontaneous toothache pain.
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Randomized Controlled Trial Clinical Trial
The prevention of induced stain using two levels of sodium hexametaphosphate in chewing gum.
This study was a randomized, controlled, examiner-blind, four-period crossover design that examined the prevention of induced stain deposition through the use of chewing gums containing either 2.0% or 3.0% sodium hexametaphosphate (Na Hex). ⋯ This study demonstrated that 2.0% and 3.0% levels of Na Hex in a chewing gum prevented the deposition of extrinsic dental stain better than a chewing gum without Na Hex, which in turn prevented the deposition of stain better than no chewing gum.