Occluding Effect of the Application of Fluoride Compounds and Desensitizers on Dentinal Tubules
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This study compared and analyzed the occluding effects of fluoride compounds and desensitizers, which are commonly used in dental clinics, ondentinal tubules. This study also evaluated the persistence of the active ingredients over time by performing toothbrushing with an electrictoothbrush. Thirty-five molar teeth, which had been extracted within the past 3 months from healthy people without tooth decays, amalgam fillings,or dental crowns, were divided into 4 pieces each. Of these, 135 teeth pieces were used as study specimens. These specimens were divided intoa control group, an untreated group, and 5 experimental groups (acidulated fluoride gel, fluoride varnish, Gluma, Super Seal, and SE-Bond). Thespecimens were then subjected to toothbrushing equivalent to 1 week (140 times), 2 weeks (280 times), and 4 weeks (560 times), and the occludingeffects on dentinal tubules in 3 regions of each specimen were examined under a scanning electron microscope. The fluoride varnish treated groupshowed the highest degree of dentinal tubule occlusion effects during the first, second, and fourth weeks of toothbrushing, with the SE-Bondtreated group showing the second highest degree and the Gluma treated group showing the lowest degree. After 4 weeks of toothbrushing, theGluma treated group and the Super Seal treated group showed the lowest degrees of dentinal tubule occlusion effects. In summary, the fluoridevarnish treated group and the SE-Bond treated group displayed higher occlusion effects even after 4 weeks of treatment than did the otherexperimental groups. Therefore, it is the authors’ belief that fluoride varnish and SE-Bond are effective for treating dentinal hyperesthesia.
Abstract
This study compared and analyzed the occluding effects of fluoride compounds and desensitizers, which are commonly used in dental clinics, ondentinal tubules. This study also evaluated the persistence of the active ingredients over time by performing toothbrushing with an electrictoothbrush. Thirty-five molar teeth, which had been extracted within the past 3 months from healthy people without tooth decays, amalgam fillings,or dental crowns, were divided into 4 pieces each. Of these, 135 teeth pieces were used as study specimens. These specimens were divided intoa control group, an untreated group, and 5 experimental groups (acidulated fluoride gel, fluoride varnish, Gluma, Super Seal, and SE-Bond). Thespecimens were then subjected to toothbrushing equivalent to 1 week (140 times), 2 weeks (280 times), and 4 weeks (560 times), and the occludingeffects on dentinal tubules in 3 regions of each specimen were examined under a scanning electron microscope. The fluoride varnish treated groupshowed the highest degree of dentinal tubule occlusion effects during the first, second, and fourth weeks of toothbrushing, with the SE-Bondtreated group showing the second highest degree and the Gluma treated group showing the lowest degree. After 4 weeks of toothbrushing, theGluma treated group and the Super Seal treated group showed the lowest degrees of dentinal tubule occlusion effects. In summary, the fluoridevarnish treated group and the SE-Bond treated group displayed higher occlusion effects even after 4 weeks of treatment than did the otherexperimental groups. Therefore, it is the authors’ belief that fluoride varnish and SE-Bond are effective for treating dentinal hyperesthesia.
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