title: Radioisotope determination of apical seal integrity of silver point-filled endodontic teeth after ultrasonic vibration.
abstract: Twenty-six human mandibular incisors with single root canals were instrumented and obturated with silver points and sealer. The efficacy of the initial seal was tested by immersion in radioiodine and counted for gamma radiation. Subsequently, the teeth were subjected to the vibration of an ultrasonic scaling device and reimmersed in the isotope so that the integrity of the apical seal could be re-evaluated as a function of increased radioiodine uptake and, thus increased gamma radiation. No significant difference was found after use of the Cavitron device.
mesh_terms: D003728:Dental Calculus / Q000628:therapy; D003777:Dental Prophylaxis / Q000295:instrumentation; D012534:Dental Scaling / Q000295:instrumentation; D006801:Humans; D007457:Iodine Radioisotopes / Q000378:metabolism; D012389:Root Canal Obturation; D012834:Silver; D014092:Tooth Root / Q000378:metabolism; D014464:Ultrasonic Therapy / Q000295:instrumentation
chemical_list: D007457:Iodine Radioisotopes; D012834:Silver