title: Shaping Ability of Reciproc, UnicOne, and Protaper Universal in Simulated Root Canals.
abstract: The study aimed to compare the shaping effects, preservation of the original curvature, and transportation of the apical foramen of Reciproc (VDW, Munich, Germany), UnicOne (Medin, Nové Město na Moravě, Czech Republic), and Protaper Universal (Dentsply Maillefer, Ballaigues, Switzerland) in simulated root canals. Thirty resin blocks with simulated curved root canals were distributed into three groups (n = 10), and prepared using Reciproc (RCp), UnicOne (UnO) and the Protaper Universal (PTu). Standardized photographs were taken before and after the instrumentation, after which they were superimposed. Measurements were taken of the quantity of resin removed from the inner and outer walls of the curvature at 6 levels, the curvature angles before and after instrumentation, and the transportation of the apical foramen. RCp obtained the highest values for amount of resin removed from the inner wall while UnO demonstrated similar shaping on both the inner and outer walls. PTu produced the greatest transportation of foramen when compared to the reciprocating instruments. There was no significant difference between the groups in terms of the change in angle (P > 0.05). All the instruments were capable of maintaining the original curvature of the root canal; however, the UnO, which used reciprocating movement, produced more conservative shapes with lower foramen transportation.
authors.affiliation: University Ceuma, Rua Josué Montello No. 1, Renascença II, 65075-120 São Luís, MA, Brazil.
authors.forename: Etevaldo Matos
authors.initials: EM
authors.lastname: Maia Filho
authors.affiliation: University Ceuma, Rua Josué Montello No. 1, Renascença II, 65075-120 São Luís, MA, Brazil.
authors.forename: Cláudia de Castro
authors.initials: Cde C
authors.lastname: Rizzi
authors.affiliation: University Ceuma, Rua Josué Montello No. 1, Renascença II, 65075-120 São Luís, MA, Brazil.
authors.forename: Matheus Bandeca
authors.initials: MB
authors.lastname: Coelho
authors.affiliation: University Ceuma, Rua Josué Montello No. 1, Renascença II, 65075-120 São Luís, MA, Brazil.
authors.forename: Sara Freitas
authors.initials: SF
authors.lastname: Santos
authors.affiliation: University Ceuma, Rua Josué Montello No. 1, Renascença II, 65075-120 São Luís, MA, Brazil.
authors.forename: Luzia Mayanne Oliveira
authors.initials: LM
authors.lastname: Costa
authors.affiliation: University Ceuma, Rua Josué Montello No. 1, Renascença II, 65075-120 São Luís, MA, Brazil.
authors.forename: Ceci Nunes
authors.initials: CN
authors.lastname: Carvalho
authors.affiliation: University Ceuma, Rua Josué Montello No. 1, Renascença II, 65075-120 São Luís, MA, Brazil.
authors.forename: Rudys Rodolfo de Jesus
authors.initials: RR
authors.lastname: Tavarez
authors.affiliation: Universidade Federal dos Vales do Jequitinhonha e Mucuri, Rua da Glória, 187 Centro, 39100-000 Diamantina, MG, Brazil.
authors.forename: Janir Alves
authors.initials: JA
authors.lastname: Soares
mesh_terms: D003198:Computer Simulation; D003762:Dental Instruments; D003786:Dental Pulp Cavity / Q000033:anatomy & histology*; D006801:Humans; D019279:Resin Cements; D012390:Root Canal Therapy / Q000295:instrumentation*
chemical_list: D019279:Resin Cements