The Journal of clinical dentistry
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Randomized Controlled Trial Comparative Study
Duration and Intensity of Anesthetic Effect Produced by Canker Sore Medications.
Canker sore medications are often recommended to patients for relief of pain associated with aphthous ulcers or other minor irritations of the mouth. The anesthetic effect of these medications is achieved by incorporation of local anesthetics, such as benzocaine, into the products' formulations. ⋯ All three products produced anesthetic effects. Red Cross Canker Sore Medication was shown to have the longest duration and greatest intensity.
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Comparative Study
A comparative evaluation of the percent acceptable end-rounded bristles: Butler G.U.M., Colgate Plus, Crest Complete, and Reach.
Many researchers have concluded that end-rounded toothbrush bristles reduce the potential of soft tissue trauma. Toothbrushes with a rippled-bristle pattern have been shown to more effectively remove dental plaque from interproximal surfaces than flat-trimmed toothbrushes. Unfortunately, many attempts to utilize rippled-bristle toothbrushes are fraught with difficulty due to poor end-rounding of these bristles in the traditional manufacturing process. ⋯ U. M.) acceptable end-rounding was observed. These results demonstrate that the newly designed rippled-bristle brush (Crest Complete) exhibits excellent bristle end-rounding.
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Randomized Controlled Trial Clinical Trial
Analgesic onset time as a measure of topical anesthetic efficacy in spontaneous toothache pain: a pilot study.
The purpose of this pilot investigation was to determine the usefulness of analgesic onset time as a measure of topical anesthetic efficacy in patients with spontaneous toothache pain. Under blinded conditions, 20 patients with spontaneous toothache pain from an open tooth cavity were randomly assigned to receive either 20% benzocaine or placebo (80% polyethylene glycol). The medication was applied directly to the open cavity in a volume of 3 drops. ⋯ In the benzocaine group, 90% of the patients reported some pain relief, while a surprisingly high 60% reported some pain relief in the placebo group. The results of this study suggest that in the spontaneous toothache pain model, analgesic onset time is a valuable measure of topical anesthetic efficacy. In addition, polyethylene glycol at a concentration of 80% may not be a totally inactive vehicle.
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Comparative Study
Bristle end-rounding in children's toothbrushes: a comparative study.
Animal and clinical studies have shown that sharp, unpolished toothbrush bristles can injure gingival tissues and that substantial variation exists in the degree of end-roundness of commercially available toothbrushes. In this study, eight brands of children's toothbrushes were assessed for their relative potential to cause oral tissue injury based upon the degree of end-roundness of their bristles. The brands studied were: Blend-a-dent Jr., Butler GUM Jr., Colgate Plus Jr., Johnson & Johnson Prevent Jr., Johnson & Johnson Reach Child, Lever Bros. ⋯ The Oral-B P20 brush had significantly more (p < 0.05) bristles with a roundness of 96% or greater; it also was in the group having the lowest number of bristles with sharp edges and had the highest average roundness. Based on these criteria, the Oral-B P20 showed the least potential for oral tissue damage, whereas the Johnson & Johnson Reach Child and Butler GUM Jr. showed the most potential for tissue injury. The other brands investigated were intermediate in end-rounding values and damage potential.
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Comparative Study
An electron microscopic comparison of bristle end-rounding of three commercial toothbrushes.
The results from three separate examinations using SEM photomicrographs and shape factor (SF) measurements show that Oral-B P-35 brushes have a highly significant difference in bristle end-rounding when compared to Colgate Precision and Crest Complete toothbrushes. The proportion of Oral-B P-35 bristles with highly rounded ends was substantially greater than that for Colgate Precision and Crest Complete toothbrushes. Oral-B also had fewer bristles in the very sharp-edged category than both Complete and Precision toothbrushes. ⋯ In separate studies, Oral-B P-35 had a significantly higher number of highly end-rounded bristles than did either the Colgate Precision or Crest Complete toothbrushes. The averages for end-roundness fall in the order of Oral-B P-35 > Complete > Precision. Thus we conclude that the potential for harming dental tissues is less for the Oral-B P-35 toothbrush than for either the Colgate Precision or Crest Complete toothbrushes.