APEC 2021


Davide Mancino

Shaping Ability, Mechanical Properties and Debris Extrusion of a New Reciprocating Single-File Shaping System: the One RECI


Shaping Ability, mechanical properties and debris extrusion of a new reciprocating single-file shaping system: the One RECI.

The main aims of root canal instrumentation are to clean and shape the root canal system, creating a continuously tapered preparation from the coronal access to the apical foramen to allow the action of irrigants and a proper root canal obturation respecting endodontic anatomy and preserving periradicular dentin for long-term effect.

Although a number of better performing nickel-titanium instruments have been developed, these objectives are not easy to achieve, especially when dealing with curved root-canals.

In these cases, centring ability and fracture resistance of the instruments may decrease, while the the amount of apically extruded debris may increase, compromising the clinical outcome of the endodontic treatment and ultimately the patient quality of life. From a clinical point of view, it is interesting to evaluate this parameter for new root canal instruments under laboratory conditions before performing clinical studies.

Recently, a new promising heat-treated instrument were launched on the market by MicroMega (Besançon, France), the One Reci. One Reci is a reciprocating single-file system with constant taper, featuring a special proprietary heat treatment called C wire and a variable off-centered cross-section intended to boost instrument flexibility, centring ability, resistance to fracture and to reduce the amount of apically extruded debris generated during shaping procedures. The instrument is designed to work in reciprocation with specific angles (170° CCW and 60° CW) generating a reciprocating counterclockwise cutting action. It is available in 5 sizes: 20.04, 25.04, 25.06, 35.04, 45.04, to cover a large variety of clinical situations. In this presentation we will therefore evaluate the different features of this new instrument, focusing mainly on One Reci 25/06, which is expected to cover 80% of clinical cases.

Short cv

Pr. Mancino obtained his degree in Dentistry and Dental Prosthetics from the University of Palermo in 2001. In 2011, he successfully obtained a Master's degree in micro-endodontics from the University of Turin. Between 2014 and 2018, he was Assistant Professor in the Endodontics Department of the University of Strasbourg. In 2018, he successfully obtained his university diploma in "smile aesthetics" from the University of Strasbourg. In 2019, he obtained a PhD in biomaterials (Chemistry-Physics) from the University of Strasbourg. Since 2020, he has been an associate professor in the department of endodontics at the University of Strasbourg.

He is the author of several international publications in the field of endodontics, a speaker at national and international congresses and a certified trainer in France where he organises several training courses in endodontics.

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