Dentinal heat transmission induced by a laser-softened gutta-percha obturation technique.
In this study, intracanal laser-softened gutta-percha, Ultrafil, and intracanal laser-cured composite resin techniques were compared with respect to the temperature elevation induced on the outer root surface. The temperature at the root surface of 50 single-rooted teeth was measured using a thermovision camera. Argon laser produced a rise in temperature of +12.9 degrees C (gutta-percha) and +13.3 degrees C (composite resin), respectively. The CO2 laser produced +10.3 degrees C and Nd:YAG laser produced the highest temperature elevation of +14.4 degrees C. Low-temperature gutta-percha obturation technique did not produce a measurable temperature change on the external root surfaces.
Department of Dental Pathology, School of Dentistry, University of Zagreb, Croatia.
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Anić
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Matsumoto
D001128:Argon; D001831:Body Temperature / Q000528:radiation effects; D002245:Carbon Dioxide; D003188:Composite Resins / Q000737:chemistry; D003804:Dentin / Q000503:physiopathology*; D006171:Gutta-Percha / Q000737:chemistry; D006358:Hot Temperature; D006801:Humans; D007834:Lasers; D009354:Neodymium; D012389:Root Canal Obturation / Q000295:instrumentation / Q000379:methods*; D013499:Surface Properties; D013814:Thermal Conductivity; D014092:Tooth Root / Q000503:physiopathology*
D003188:Composite Resins; C092420:Clearfil Photo Posterior; D002245:Carbon Dioxide; D009354:Neodymium; D001128:Argon; D006171:Gutta-Percha