title: The heat generated on the external root surface during post space preparation.
abstract: The heat generated on the external root surface of human premolar teeth during post space preparation was measured in vitro. The rise in temperature was recorded at a point 6 mm from the apex of the tooth using a thermocouple attached to a chart recorder. The temperature rise was greatest when the removal of gutta-percha was combined with post channel preparation. Temperature rises of up to 31 degrees C were recorded. Instruments that only removed gutta-percha did not generate the same amount of heat. The results from this study suggest that the use of engine-driven drills to prepare post channels in teeth may generate temperature rises that may cause periradicular tissue damage, and caution should be exercised during their use.
authors.forename: E M
authors.initials: EM
authors.lastname: Saunders
authors.forename: W P
authors.initials: WP
authors.lastname: Saunders
mesh_terms: D003442:Crowns / Q000009:adverse effects*; D003737:Dental Cavity Preparation / Q000009:adverse effects*; D003762:Dental Instruments / Q000009:adverse effects*; D006171:Gutta-Percha; D006358:Hot Temperature; D006801:Humans; D011176:Post and Core Technique / Q000009:adverse effects*
chemical_list: D006171:Gutta-Percha