CANAL TRANSPORT INDEX AND ROOT CANAL CENTRALIZATION CAPACITY PROMOTED BY THE BIORACE, V-FILE, AND PROTAPER NEXT SYSTEMS: A CBCT STUDY
Palavras-chave:
Root canal preparation, Endodontics, Cone beam computed tomography, Treatment failureResumo
Objective: This study aims to analyze the transport index (TI) and centralization capacity (CC) of root canal preparation using different nickel-titanium instruments, based on images obtained by cone beam computed tomography (CBCT). Material and Methods: Forty-five mesiobuccal canals of lower molars were prototyped. Groups: The canals were randomly distributed into three groups (n=15) according to the rotary instrument used: G1: BioRace®, G2: V-File®, G3: Protaper Next®. CBCT images were obtained before and after canal preparation. Measurements were performed by two examiners using OsiriX® DICOM Viewer software. The analyses were performed 3 mm below the furcation of the teeth. The IT and CC were evaluated according to the methodology proposed by Gambill et al. (1996). The data obtained were analyzed using the Kruskal-Wallis test, with a significance level of 5%. Results: All instruments analyzed caused root canal transport and decentralization. BioRace® and V-File®: Tendency toward distal transport. Protaper Next®: Tendency toward mesial transport. No significant differences were found between the groups in terms of IT and CC (p<0.05). None of the instruments tested showed perfect centralization capacity (=1.0).
Conclusion: None of the instruments, whether operated in continuous rotation or reciprocating kinematics, showed no transport or ideal centralization capacity of the root canal. All instruments evaluated caused some degree of transport and decentralization of the canals.
Referências
- Estrela C, Holland R, Estrela CR, Alencar AH, Sousa-Neto MD, Pécora JD. Characterization of successful root canal treatment. Braz Dent J.
; 25(1): 3-11.
- Oliveira HF, Alencar AHG, Estrela CRA, Decurcio DA, Silva JA, Sousa VC, Estrela C. Decontamination of root canals infected with reciprocating instruments, sodium hypochlorite 2.5% and apple vinegar. Dental Press Endod. 2018; 8(2): 70-7.
- Schilder H. Cleaning and shaping the root canal. Dent Clin North Am. 1974; 18(2): 269-96
- Park HJ, Seo MS, Moon YM. Root canal volume change and transportation by Vortex Blue, ProTaper Next, and ProTaper Universal in curved root canals. Restor Dent Endod. 2017; 43(1): 1-10.
- Madani Z, Soleymani A, Bagheri T, Moudi E, Bijani A, Rakhshan
V. Transportation and centering ability of neoniti and protaper instruments; a CBCT Assessment. Iran Endod J. 2017; 12(1): 43-9.
- Mamede-Neto I, Borges AH, Guedes OA, Oliveira D, Pedro FL, Estrela
C. Root canal transportation and centering ability of nickel-titanium rotary instruments in mandibular premolars assessed using cone-beam computed tomography. Open Dent J. 2017; 11:71-78.
- Duarte PM, Silva PB, Alcalde MP, Vivan RR, Rosa RAD, Duarte MAH, Só MVR. Canal transportation, centering ability, and cyclic fatigue promoted by twisted file adaptive and navigator evo instruments at different motions. J Endod. 2018; 44(9): 1425-1429.
- Mamede-Neto I, Borges AH, Alencar AHG, Duarte MAH, Sousa Neto MD, Estrela C. Multidimensional Analysis of Curved Root Canal Preparation Using Continuous or Reciprocating Nickel-titanium Instruments. Open Dent J. 2018; 12:32-45.
- Gambill JM, Alder M, Rio CE. Comparison of nickel-titanium and stainless steel hand-file instrumentation using computed tomography. J Endod. 1996; 22(7):369-75.
