TY - JOUR
T1 - The Effect of Ultrasonic Post Instrumentation on Root Surface Temperature
AU - Huttula, Andrew S.
AU - Tordik, Patricia A.
AU - Imamura, Glen
AU - Eichmiller, Frederick C.
AU - McClanahan, Scott B.
PY - 2006/11
Y1 - 2006/11
N2 - This study measured root surface temperature changes when ultrasonic vibration, with and without irrigation, was applied to cemented endodontic posts. Twenty-six, extracted, single-rooted premolars were randomly divided into two groups. Root lengths were standardized, canals instrumented, obturated, and posts cemented into prepared spaces. Thermocouples were positioned at two locations on the proximal root surfaces. Samples were embedded in plaster and brought to 37°C in a water bath. Posts were ultrasonically vibrated for 4 minutes while continuously measuring temperature. Two-way ANOVA compared effects of water coolant and thermocouple location on temperature change. Root surface temperatures were significantly higher (p < 0.001) when posts were instrumented dry. A trend for higher temperatures was observed at coronal thermocouples of nonirrigated teeth and at apical thermocouples of irrigated teeth (p = 0.057). Irrigation during post removal with ultrasonics had a significant impact on the temperature measured at the external root surface.
AB - This study measured root surface temperature changes when ultrasonic vibration, with and without irrigation, was applied to cemented endodontic posts. Twenty-six, extracted, single-rooted premolars were randomly divided into two groups. Root lengths were standardized, canals instrumented, obturated, and posts cemented into prepared spaces. Thermocouples were positioned at two locations on the proximal root surfaces. Samples were embedded in plaster and brought to 37°C in a water bath. Posts were ultrasonically vibrated for 4 minutes while continuously measuring temperature. Two-way ANOVA compared effects of water coolant and thermocouple location on temperature change. Root surface temperatures were significantly higher (p < 0.001) when posts were instrumented dry. A trend for higher temperatures was observed at coronal thermocouples of nonirrigated teeth and at apical thermocouples of irrigated teeth (p = 0.057). Irrigation during post removal with ultrasonics had a significant impact on the temperature measured at the external root surface.
KW - Heat-induced bone degeneration
KW - post removal
KW - root surface temperature changes
KW - ultrasonics
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U2 - 10.1016/j.joen.2006.05.005
DO - 10.1016/j.joen.2006.05.005
M3 - Article
C2 - 17055912
AN - SCOPUS:33750014748
SN - 0099-2399
VL - 32
SP - 1085
EP - 1087
JO - Journal of Endodontics
JF - Journal of Endodontics
IS - 11
ER -