Effect of Disinfectant Solutions on the Surface Free Energy and Wettability of Filling Material

Autor(es)

Prado, Maira ; de Assis, Danielle Ferreira ^[1] ; Gomes, Brenda P. F. A. ^[2] ; Simao, Renata A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Rio de Janeiro, Dept Met & Mat Engn, Rio De Janeiro - Brazil

^[2] Univ Estadual Campinas, Piracicaba Dent Sch, Endodont Div, Dept Restorat Dent, UNICAMP, BR-13414018 Piracicaba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ENDODONTICS; v. 37, n. 7, p. 980-982, JUL 2011.
• Citações Web of Science: 18

Resumo

Introduction: Gutta-percha (GP) and Resilon (Res) cones are usually disinfected by the use of solutions such as sodium hypochlorite (NaOCl) and chlorhexidine (CHX). The aims of this study were to evaluate the surface free energy of GP and Res cones after disinfection procedures and to investigate the wettability of endodontic sealers in contact with these surfaces. Methods: GP and Res flat smooth surfaces were prepared. Thirty-six samples of each material were used. The samples were divided into 6 groups as follows: Control group GP, immersed in Milli-Q water (MQW); CHX group GP, immersed in 2% CHX solution and then washed with MQW; NaOCl group GP, immersed in 5.25% NaOCl and then washed with MQW; Control group Res, immersed in MQW; CHX group Res, immersed in 2% CHX solution and then washed with MQW; and NaOCl group Res, immersed in 5.25% NaOCl and then washed with MQW. Samples were analyzed first with a goniometer to measure the contact angle between the test surfaces and 3 solutions (water, ethylene glycol, and diiodomethane) to determine the surface free energy. Then the contact angle between surfaces and each one of the sealers tested, AH Plus and Real Seal SE, was measured. Data were statistically analyzed. Results: The results showed that when disinfectant solutions were used, the surface free energy was greater. When evaluating the interaction between materials and sealers, the use of CHX presented lower values of contact angle, followed by NaOCl. Conclusions: It was concluded that the solutions used in decontamination increase the surface free energy, promoting high interaction between GP/Res and sealers. (J Endod 2011;37:980-982) (AU)

• Processo FAPESP: 09/53976-0 - Avaliação da ação de diferentes soluções irrigadoras na adesão entre o complexo material obturador-dentina: proposição de aprimoramento nos métodos de avaliação de força de adesão e associação adesão-infiltração bacteriana
• Beneficiário: Maira Do Prado
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 10/50817-5 - Avaliação da ação de diferentes soluções irrigadoras na adesão entre o complexo material obturador-dentina: proposição de aprimoramento nos métodos de avaliação de força de adesão e associação adesão infiltração / infiltração bacteriana
• Beneficiário: Brenda Paula Figueiredo de Almeida Gomes
• Modalidade de apoio: Auxílio à Pesquisa - Regular