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Evaluation of cutting efficiency of orthograde ultrasonic tips by using a nonstatic model. J Endod 2008 Jul;34(7):863-5



Pubmed ID




Scopus ID

2-s2.0-44949166701 (requires institutional sign-in at Scopus site)   14 Citations


The purpose of this in vitro study was to evaluate the cutting efficiency of 4 orthograde ultrasonic tips and describe a nonstatic cutting model. Forty molars were extracted and decoronated. Each group contained 10 tips. The samples were fixed to a double pan balance that applied a constant vertical force of 40 g to the ultrasonic tips. The ultrasonic handpiece was mounted to a cyclic axial fatigue testing apparatus to generate a 3-mm horizontal movement of the ultrasonic tip during the cutting procedure. Three cutting cycles of 30 seconds were tested for each power setting of 3, 5, and 7. The weight of the samples was measured before and after the 3 cycles. The cutting efficiency was determined by the weight change caused by dentin removal. The Buc-1 ultrasonic tip had a significantly greater cutting efficiency than the other 3 tips at each of the 3 power settings (P < .05).

Author List

Dentkos TR, Berzins DW


David Berzins BS,PhD Graduate Program Director for Dental Biomaterials in the General Dental Sciences/Dental Biomaterials department at Marquette University

MESH terms used to index this publication - Major topics in bold

Dental Instruments
Dental Stress Analysis
Equipment Design
Root Canal Preparation
Ultrasonic Therapy