| Autor: |
Orel L; 3rd Department, Discipline of Odontotherapy and Endodontics, Faculty of Dental Medicine, Research Center in Dental Medicine Using Conventional and Alternative Technologies, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania., Velea-Barta OA; 3rd Department, Discipline of Odontotherapy and Endodontics, Faculty of Dental Medicine, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania., Sinescu C; 1st Department, Discipline of Prosthesis Technology and Dental Materials, Faculty of Dental Medicine, Research Center in Dental Medicine Using Conventional and Alternative Technologies, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania., Duma VF; 3OM Optomechatronics Group, Faculty of Engineering, 'Aurel Vlaicu' University of Arad, 310130 Arad, Romania.; Doctoral School, Polytechnic University of Timisoara, 1 Mihai Viteazu Ave., 300222 Timisoara, Romania., Nica LM; 3rd Department, Discipline of Odontotherapy and Endodontics, Faculty of Dental Medicine, TADERP Research Center, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania., Horhat RM; 3rd Department, Discipline of Odontotherapy and Endodontics, Faculty of Dental Medicine, TADERP Research Center, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania., Chirila RD; Faculty of General Medicine, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania., Tudor A; Discipline of Computer Science and Medical Biostatistics, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania., Vulcănescu DD; Emergency Hospital for Children 'Louis Țurcanu', Str. Dr. Iosif Nemoianu, No. 2, 300011 Timisoara, Romania., Negrutiu ML; 1st Department, Discipline of Prosthesis Technology and Dental Materials, Faculty of Dental Medicine, Research Center in Dental Medicine Using Conventional and Alternative Technologies, 'Victor Babes' University of Medicine and Pharmacy, 300041 Timisoara, Romania. |
| Abstrakt: |
Maintaining the original trajectory of the root canal is a major challenge in endodontic therapy, especially in narrow and curved root canals. The present study aims to assess the shaping capacity of three endodontic systems made of different nickel−titanium alloys on simulated curved root canals. Thirty-six endodontic resin blocks (Ref. V040245, VDW) divided into three groups, each of twelve blocks (n = 12), were shaped, photographed, and analyzed: Group 1-Protaper Gold (PTG) (Dentsply Maillefer, Ballaigues, Switzerland) F2 25/08; Group 2-Reciproc Blue (RB), RB 25/08 (VDW, Munich, Germany); Group 3-WaveOne Gold (WOG) (Dentsply Maillefer), WOG 25/07. Each block was standardized and photographed before and after shaping in the same position, with the foramen oriented to the left. Post-shaping images were superimposed onto the initial ones. Thirteen measurement points were used for evaluation, spaced with 1 mm distance from one another, from level 0, apical foramen, to level 12, coronal orifice. The amount of removed resin from inner (X1) and outer (X2) walls, the direction of transportation (X1 − X2), and the centering ability (X1 − X2)/Y were measured, calculated, and comparatively analyzed. Statistical differences (p < 0.05) were observed between the shaping capacity of the considered systems in the middle and coronal thirds. PTG had a better centering ability than WOG and RB in the coronal third, while RB was more centered in the middle third in comparison to both WOG and PTG. In the apical third, the centering capacity of WOG was higher, without being statistically significant. WOG 25/07 and PTG 25/08 tend to cut more on the inner wall of the root canals, and RB 25/08 on the external one. |
