Reciprocating motion in retreatment
24/05/2025
Fellow
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The R-One Mini System by Fanta Dental is a state-of-the-art reciprocating file system specifically designed to deliver efficient, safe, and conservative root canal shaping. Its advanced engineering and compact design allow clinicians to preserve more of the natural tooth structure while achieving optimal shaping outcomes—even in complex anatomies.
In retreatment scenarios, the R-One Mini System truly stands out. The reciprocating motion plays a pivotal role in re-establishing canal patency, facilitating the removal of obturation materials, and navigating previously treated or obstructed canals with enhanced precision and control. This makes it an invaluable tool for endodontists seeking reliability, performance, and minimal invasiveness across both primary treatments and retreatments
Fig. 1
Pre op X-RAY, Clinically, the lower left first premolar showed tenderness during chewing and required rehabilitation due to a distal cavity.
Fig. 2
Finishing file (25.06) in action.
The heat treatment also allows us to pre-bend the instrument, making it possible to manage cases where the patient has limited mouth opening, as in this case.
Fig. 3
Post op x-ray, with post placement.
Following the endo-retreatment, the tooth will be rehabilitated with a prosthetic crown to complete the treatment plan.
Fig. 4
25/06- The last file of the sequence, the finishing file, variable taper 0.6 and 0.25 tip.
It is made of AF-R wire alloy to increase flexibility and flexural resistance.
The double S cross-section ensures effective cutting. Moreover, the cross-section proves to be very effective in the removal of gutta-percha, especially when combined with reciprocating motion.
Fig. 5
About the author:
- Degree with honors in Brescia in 2018
- Numerous private courses in the field of endodontics
- 2020 2nd level post-graduate Master in Clinical and Microsurgical Endodontics at the University of Brescia with full marks and honors
- from 2019 he is clinical tutor in the 3rd year of Dentistry alongside Prof. Salgarello
- from 2021 he is tutor for the aforementioned university master
- He collaborates with the Spedali Civili of Brescia as a freelancer
- He has published articles in national and international journals
- Contract professor for the University of Brescia
- Member of the Italian Academy of Microscopic Dentistry
- Collaborate with colleagues in some private courses focused on endodontics
- He carries out his freelance activity in the province of Brescia dedicating himself mainly to micro-endodontics
Conclusions
This retreatment case highlights how the successful management of narrow and previously treated root canals requires not only advanced clinical skills but also the strategic use of specialized instruments. The R-One Mini System by Fanta Dental proved to be an essential tool in this challenging scenario, offering the ideal combination of flexibility, cutting efficiency, and control. Its reciprocating motion was particularly valuable in re-establishing canal patency and navigating complex, constricted anatomies—allowing for precise, conservative shaping while minimizing the risk of procedural errors. The R-One Mini demonstrated its strength as a reliable and efficient solution in the retreatment of anatomically demanding cases.
Bibliography
Cecagno, Fábio Luiz et al. Evaluation of the Ability of 3 Reciprocating Instruments to Remove Obturation Material: A Micro–Computed Tomography Study; Journal of Endodontics, Volume 50, Issue 3, 376 - 380
Martinho, F.C., Freitas, L.F., Nascimento, G.G. et al. Endodontic retreatment: clinical comparison of reciprocating systems versus rotary system in disinfecting root canals. Clin Oral Invest 19, 1411–1417 (2015). https://doi.org/10.1007/s00784-014-1360-9
Serracchiani M, Miccoli G, Di Nardo D, Zanza A, Cantore M, Gambarini G, Testarelli L. Effect of flexural stress on Torsional resistance of NiTi Instruments. J Endod 2021 Mar;47(3): 472-476
