Kaline Romeiro1, Andressa de Almeida2, Marcely Cassimiro1, Luciana Gominho3, Eugênia Dantas4, Nayane Chagas1, Christianne Velozo1, Laila Freire5, Diana Albuquerque1. 1. Department of Operative Dentistry and Endodontics, Dental College of Pernambuco, University of Pernambuco (UPE), Avenida General Newton Cavalcanti, 1650, Camaragibe, PE, 54753-020, Brazil. 2. Department of Operative Dentistry and Endodontics, Dental College of Pernambuco, University of Pernambuco (UPE), Avenida General Newton Cavalcanti, 1650, Camaragibe, PE, 54753-020, Brazil. andressaendodontia@gmail.com. 3. Department of Odontology, Biological Sciences Unit, Federal University of Campina Grande (UFCG), Campina Grande, PB, Brazil. 4. Department of Clinic and Social Dentistry, Federal University of Paraiba (UFPB), João Pessoa, PB, Brazil. 5. Department of Restorative Dentistry, School of Dentistry, University of São Paulo, São Paulo, Brazil.
Abstract
OBJECTIVES: To compare the remaining root canal filling material, dentin removal, apical transportation, and apical extrusion of debris after the retreatment of canals filled with bioceramic or resin-based sealers using the Reciproc or Reciproc Blue instruments. MATERIALS AND METHODS: Sixty mandibular molars with severely curved mesial roots were selected. The samples were initially instrumented with Reciproc (R25) and then divided into four experimental groups according to the endodontic sealer and retreatment instrument (n = 15): BC Sealer/Reciproc (BCRC), BC Sealer/Reciproc Blue (BCRB), AH Plus/Reciproc (AHRC), and AH Plus/Reciproc Blue (AHRB). The procedure time was measured, and an Eppendorf tube was used in each root canal to store the debris extrusion. The samples were scanned by micro-CT before and after retreatment. The apical transportation, volume of dentin, and filling material were evaluated. RESULTS: There were no significant differences in the reduction of the volume of obturator material or dentin removal between groups (p > .05). There were also no differences in the amount of extruded material or apical transportation (p > .05). The retreatment time for the AHRC group was significantly lower than that for the other groups (p = .004). CONCLUSIONS: All tested instruments obtained similar efficacy in filling material removal procedures, although no system completely removed the filling material. Retreatment of canals filled with bioceramic BC Sealer may be more time consuming. CLINICAL RELEVANCE: This study reported that Reciproc and Reciproc Blue can be indicated in retreatment of severely curved root canals filled either with bioceramic or resin-based sealers.
OBJECTIVES: To compare the remaining root canal filling material, dentin removal, apical transportation, and apical extrusion of debris after the retreatment of canals filled with bioceramic or resin-based sealers using the Reciproc or Reciproc Blue instruments. MATERIALS AND METHODS: Sixty mandibular molars with severely curved mesial roots were selected. The samples were initially instrumented with Reciproc (R25) and then divided into four experimental groups according to the endodontic sealer and retreatment instrument (n = 15): BC Sealer/Reciproc (BCRC), BC Sealer/Reciproc Blue (BCRB), AH Plus/Reciproc (AHRC), and AH Plus/Reciproc Blue (AHRB). The procedure time was measured, and an Eppendorf tube was used in each root canal to store the debris extrusion. The samples were scanned by micro-CT before and after retreatment. The apical transportation, volume of dentin, and filling material were evaluated. RESULTS: There were no significant differences in the reduction of the volume of obturator material or dentin removal between groups (p > .05). There were also no differences in the amount of extruded material or apical transportation (p > .05). The retreatment time for the AHRC group was significantly lower than that for the other groups (p = .004). CONCLUSIONS: All tested instruments obtained similar efficacy in filling material removal procedures, although no system completely removed the filling material. Retreatment of canals filled with bioceramic BC Sealer may be more time consuming. CLINICAL RELEVANCE: This study reported that Reciproc and Reciproc Blue can be indicated in retreatment of severely curved root canals filled either with bioceramic or resin-based sealers.
Authors: Milena Perraro Martins; Marco Antonio Hungaro Duarte; Bruno Cavalini Cavenago; Augusto Shoji Kato; Carlos Eduardo da Silveira Bueno Journal: J Endod Date: 2017-01-26 Impact factor: 4.171
Authors: Giselle Nevares; Diana S de Albuquerque; Laila G Freire; Kaline Romeiro; Howard M Fogel; Marcelo Dos Santos; Rodrigo S Cunha Journal: J Endod Date: 2016-05 Impact factor: 4.171
Authors: Flávio R F Alves; Marília F Marceliano-Alves; Júlio Cézar N Sousa; Stephanie B Silveira; José C Provenzano; José F Siqueira Journal: J Endod Date: 2016-05-20 Impact factor: 4.171