Multidimensional Analysis of Curved Root Canal Preparation Using Continuous or Reciprocating Nickel-titanium Instruments.

Autor:	Mamede-Neto I; Department of Stomatologic Sciences, School of Dentistry, Federal University of Goiás, Goiânia, GO, Brazil., Borges ÁH; School of Dentistry, University of Cuiabá, Cuiabá, MT, Brazil., Alencar AHG; Department of Stomatologic Sciences, School of Dentistry, Federal University of Goiás, Goiânia, GO, Brazil., Duarte MAH; Departament of Dentistry, Endodontics and Dental Material, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil., Sousa Neto MD; Departament of Restaurative Dentistry, Dental School, University of São Paulo, Ribeirão Preto, SP, Brazil., Estrela C; Department of Stomatologic Sciences, School of Dentistry, Federal University of Goiás, Goiânia, GO, Brazil.
Jazyk:	angličtina
Zdroj:	The open dentistry journal [Open Dent J] 2018 Jan 29; Vol. 12, pp. 32-45. Date of Electronic Publication: 2018 Jan 29 (Print Publication: 2018).
DOI:	10.2174/1874210601812010032
Abstrakt:	Objective: To evaluate transportation (T) and centering ability (CA) of root canal preparations using continuous or reciprocating nickel-titanium endodontic files. Materials and Methods: Ninety-six mesiobuccal root canals of mandibular first and second molars were randomly divided into 6 groups (n=16) according to the rotary file used: 1. ProTaper Next; 2. ProTaper Gold; 3. Mtwo; 4. BioRaCe; 5. WaveOne Gold; 6. Reciproc. Root canals were prepared according to manufacturer's instructions. Cone beam computed tomography scans were obtained before and after root canal preparation. Measurements were made at six different reference points: 2, 3 and 4 mm from the apex and 2, 3 and 4 mm below furcation in different directions. Results: The greatest Mesiodistal (MD) Transportation (T) was found for Reciproc files ( p <0.05), and the greatest buccolingual (BL) T, for Reciproc, ProTaper Gold and ProTaper Next files ( p <0.05). The greatest Mesiodistal (MD) Centering Ability (CA) was found for BioRaCe files ( p <0.05), and the greatest Buccolingual (BL) CA, for BioRaCe and Mtwo files ( p <0.05). Conclusion: All systems produced root canal transportation. No file system achieved perfect CA of root preparation. Reciproc files had the greatest MD T and BL T. BioRaCe files had the greatest MD CA, whereas BL CA was similar for BioRaCe and Mtwo files.
Databáze:	MEDLINE
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