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Testing of all Six Semicircular Canals with Video Head Impulse Test Systems
Published on: April 18, 2019
Canal shaping of different single-file systems in curved root canals
Maurizio D'Amario1, Francesco De Angelis2, Maddalena Mancino2
1Unit of Restorative Dentistry, Endodontics and Oral Pathology, Department of Life, Health and Environmental Sciences, Dental Clinic, University of L'Aquila, L'Aquila, Italy.
Background/Purpose:
This study compared maintenance of canal anatomy, occurrence of apical transportation, and working time observed after instrumentation with One Shape New Generation rotary system (Micro-Mega), with those observed after instrumentation with Reciproc (VDW) and WaveOne (Dentsply-Maillefer) reciprocating systems.
Materials And Methods:
The mesial canals of 45 mandibular molars (curvature angles between 35° and 45°) were selected. Specimens were randomly divided into three groups, and canal preparations were performed using One Shape, Reciproc, or WaveOne systems (size #25). A digital double radiographic technique was used to determine apical transportation and change in angle of curvature. Also, working time and instrument failures were recorded. Data were statistically analyzed.
Results:
During preparation, no file fractured. No statistically significant differences were found among groups. No system showed a significantly faster preparation time than others (P > 0.05). All instruments maintained the original canal curvature well and were safe to use.
Conclusion:
Both continuous rotary instrument and reciprocating systems did not have any influence on the presence of apical transportation or caused an alteration in angle of canal curvature.
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