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Ultrasonic Versus Hand Filing Of The Human Root Canal System, Howard W. Scholz Jr.
Ultrasonic Versus Hand Filing Of The Human Root Canal System, Howard W. Scholz Jr.
Loma Linda University Electronic Theses, Dissertations & Projects
A comparison was made of ultrasonic filing versus hand filing using three solutions to flood the canals of 24 extracted human maxillary central incisors. A modified PR-30 Cavitron insert was used in a Cavitron 1010 unit for the ultrasonic filing. The clinical crown was removed with a diamond saw and water spray at the cemento-enamel junction. The two major groups were ultrasonic filing versus hand filing; the three subgroups were solution/solvents - 10% EDTA, 2.0% NaOCl, and distilled water.
After filing, the roots were grooved longitudinally with a high speed bur and cracked opened with a mallet and chisel. The …