title: Performance of Three Single Instrument Systems in the Preparation of Long Oval Canals.
abstract: This study aimed to evaluate the performance of the Wave One, Easy ProDesign Logic and One Shape systems in the preparation of long oval root canals. Forty-two mandibular incisors were randomized into three groups: Group I, Wave One Primary (WO) (#25.08); Group II, Easy ProDesign Logic (EPL) (#25.06) and Group III, One Shape (OS) (#25.06). Micro-computed tomography scans were obtained pre- and post-preparation of the samples. Instrument fractures or loss of working length did not occur in any of the groups. There was a statistically significant difference in total root canal volume between the WO and EPL (p<0.05) and OS systems (p<0.05) The mean percentages of instrumented canal area in the middle thirds were 76.9% in the WO, 62.3% in the EPL and 71.8% in the OS (p>0.05). The OS system had the strongest correlation between volume increase and instrumented area (R=0.63). The WO, EPL and OS systems presented mean preparation times of 2.13 min, 0.54 min, and 2.21 min (p<0.05), respectively. All three systems enabled the safe preparation of long oval root canals. The WO system most effectively increased root canal volume, but it did not affect the instrumented areas. The OS system had the strongest correlation between volume increase and instrumented area, while the EPL system was the fastest.
authors.affiliation: Department of Dentistry, Positivo University, Curitiba, PR, Brazil.
authors.forename: Beatriz Serrato
authors.initials: BS
authors.lastname: Coelho
authors.affiliation: Department of Dentistry, Positivo University, Curitiba, PR, Brazil.
authors.forename: Rodrigo Otavio Jatahy Ferreira do
authors.initials: RO
authors.lastname: Amaral
authors.affiliation: Department of Dentistry, Positivo University, Curitiba, PR, Brazil.
authors.forename: Denise Piotto
authors.initials: DP
authors.lastname: Leonardi
authors.affiliation: Department of Dentistry, Positivo University, Curitiba, PR, Brazil.
authors.forename: Bruno
authors.initials: B
authors.lastname: Marques-da-Silva
authors.affiliation: Department of Dentistry, Positivo University, Curitiba, PR, Brazil.
authors.forename: Yara Teresinha Corrêa
authors.initials: YT
authors.lastname: Silva-Sousa
authors.affiliation: Department of Dentistry, Positivo University, Curitiba, PR, Brazil.
authors.forename: Fredson Marcio Acris de
authors.initials: FM
authors.lastname: Carvalho
authors.affiliation: Department of Dentistry, Positivo University, Curitiba, PR, Brazil.
authors.forename: Flares
authors.initials: F
authors.lastname: Baratto-Filho
mesh_terms: D003762:Dental Instruments; D006801:Humans; D018915:Root Canal Preparation