In vitro assessment of pulp chamber temperature of different teeth submitted to dental bleaching associated with LED/laser and halogen lamp appliances
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Data
2008-07-01
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Coorientador
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This study sought to assess the pulp chamber temperature in different groups of human teeth that had been bleached using hydrogen peroxide gel activated with halogen lamps or hybrid LED/laser appliances. Four groups of ten teeth (maxillary central incisors, mandibular incisors, mandibular canines, and maxillary canines) were used. A digital thermometer with a K-type thermocouple was placed inside pulp chambers that had been filled with thermal paste. A 35% hydrogen peroxide-based red bleaching gel was applied to all teeth and photocured for a total of three minutes and 20 seconds (five activations of 40 seconds each), using light from an LED/laser device and a halogen lamp. The temperatures were gauged every 40 seconds and the data were analyzed by three-way ANOVA, followed by Tukey's test. Regardless of the light source, statistically significant differences were observed between the groups of teeth. The mean temperature values (±SD) were highest for maxillary central incisors and lowest for mandibular canines. The halogen lamp appliance produced more pulp chamber heating than the LED/laser appliance. The increase in irradiation time led to a significant increase in temperature.
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halogen , hydrogen peroxide , oxidizing agent , analysis of variance , body temperature , canine tooth , comparative study , dental care , human , in vitro study , incisor , laser , light , nonparametric test , radiation exposure , semiconductor , tooth pulp , Analysis of Variance , Body Temperature , Cuspid , Dental Pulp , Halogens , Humans , Hydrogen Peroxide , Incisor , Lasers , Light , Oxidants , Semiconductors , Statistics, Nonparametric , Tooth Bleaching
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Inglês
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General Dentistry, v. 56, n. 5, p. 481-486, 2008.