Evaluation of apical debris extrusion and patency file in continuous and reciprocating rotary endodontic systems.

• Main Authors: Tomas Bordagaray (Author), Karin Steinfort (Author), Martin Pendola (Author), Hector Monardes (Author), Jaime Abarca (Author)
• Format: Book
• Published: Universidad de Concepción., 2019-05-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.
• Notes: 10.17126/joralres.2019.048; 0719-2460; 0719-2479
• Keywords: root canal preparation; dental instruments; dental high-speed equipment; molar; root canal therapy; debris extrusion; Dentistry; RK1-715
• Source: Journal of Oral Research, Vol 8, Iss 4, Pp 325-330 (2019)

The aim of the study was to quantify and compare apical debris extrusion in two systems of continuous and reciprocating rotary instrumentation with, and without, the use of a patency file. An experimental study was carried out in 120 mesial roots of lower first molars, which were randomized in the following 4 groups: Group A. Reciproc (VDW) R25 without a patency file, Group B Mtwo (VDW) without a patency file, Group C Reciproc (VDW) R25 with a patency file and Group D Mtwo with a patency file. Groups A, B and C presented statistically significant differences in comparison to group D, Mtwo with the use of a patency file (p<0.008 to 95% reliability). In conclusion, the greater amount of debris extruded through the apex occurred in roots instrumented with the reciprocating rotary system; this difference was statistically significant in relation to teeth treated with the Mtwo continuous rotary system with the use of a patency file.