Temperature change in the pulp chamber during application of heat to composite and amalgam cores and its returning time to oral heat.
Protection of vital tissue, especially pulp tissue, is essential to any restorative dental procedure. This study observed the temperature changes in the pulp chamber one minute after application of heat of different degrees to composite and amalgam cores and period of time necessary for the temperature measured in the pulp one minute after heat application to return to 36 degrees C. For this, twelve extracted, morphologically intact human teeth were chosen. Four pins were placed in each of the teeth. Amalgam and composite cores were prepared. All specimens were placed in a water bath at 36 degrees C. Heat of 0 degree C, 40 degrees C, 60 degrees C, 80 degrees C was applied to the cores on the teeth and the temperature of the pulp was measured one minute later by means of a thermocouple. For both amalgam and composite cores, the lowest increase in the pulp temperature was established after the 40 degrees C heat application.
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University of Ankara, Faculty of Dentistry, Department of Prosthodentics, Turkey.
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D001831:Body Temperature / Q000502:physiology*; D001833:Body Temperature Regulation; D003188:Composite Resins; D003723:Dental Amalgam; D003772:Dental Pins; D003786:Dental Pulp Cavity / Q000502:physiology*; D006358:Hot Temperature; D006801:Humans; D008963:Molar; D011176:Post and Core Technique; D013814:Thermal Conductivity; D013821:Thermometers; D013997:Time Factors
D003188:Composite Resins; D003723:Dental Amalgam