Publicação: Intrapulpar temperature during continuous CO2 laser irradiation in human molars: An in vitro study
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To establish safety parameters, we in vitro studied the increase in intrapulpal temperature caused by the use of a cw CO2 laser. A thermistor was implanted in the inner part of the pulpal chamber of 25 human lower third molars to measure the intrapulpal temperature produced by laser powers between 2-10 W and exposure times of 0.5-25.0 s. The Pearson linear correlation factor applied to the measured values showed there is a direct relationship between the independent variable and the applied power. A variance analysis produced the linear regression equation: T=1.10+(0.127)E where T is the temperature and E the energy. The results showed that, with a power of 4 W and maximum exposure time of 2.5 s (10 J) and a power density of 12738.85 W cm-2, there will be no damaging reactions affecting the pulpal tissues.
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Adverse effects, Carbon dioxide laser, Pulp, Teeth, Temperature effects, Bone, Continuous wave lasers, Correlation methods, Laser applications, Laser safety, Laser tissue interaction, Medical applications, Regression analysis, Temperature measurement, Thermal effects, Thermistors, Human molars, Pulpal tissues, Variance analysis, Carbon dioxide lasers, carbon dioxide, analysis of variance, enamel, heat, human, in vitro study, laser, molar tooth, radiation exposure, radiation response, statistical model, tooth pulp, Analysis of Variance, Carbon Dioxide, Dental Enamel, Dental Pulp, Dose-Response Relationship, Radiation, Heat, Humans, Lasers, Linear Models, Molar
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Inglês
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Journal of Laser Applications, v. 9, n. 6, p. 291-294, 1997.
