title: Bovine Pulp Tissue Dissolution Ability of Irrigants Associated or Not to Ultrasonic Agitation.
abstract: The aim of this study was to evaluate the tissue dissolution ability of different irrigating solutions associated or not to ultrasonic agitation. Ninety bovine pulp fragments (n=10 per group) were weighed and then placed individually in Eppendorf test tubes containing the following irrigants: G1- 2.5% sodium hypochlorite (NaOCl); G2- 2.5% NaOCl + ultrasonic agitation (US); G3- 2.5% NaOCl + 0.2% cetrimide (CTR); G4- 2.5% NaOCl + 0.2% CTR + US; G5- 400 ppm Sterilox (SX); G6- SX + US; G7- 0.2% CTR; G8- 0.2% CTR + US; G9- saline solution. Two blinded observers assessed the samples continuously for the first 4 h, and then every hour for the next 12 h. Dissolution speed was calculated by dividing the initial pulp weight (mg) by the period of time until complete dissolution (min). Data were compared by ANOVA and Tukey post hoc test with a 5% significance level. G1 to G4 dissolved pulp fragments completely and G2 was significantly faster than the other groups. G5 to G9 did not exhibit dissolving activity. In conclusion, only groups containing NaOCl were capable of pulp tissue dissolution, which was enhanced by ultrasonic agitation, but did not alter when 0.2% cetrimide was associated. This isolated solution and Sterilox showed no dissolving capacity, regardless the use of ultrasound.
authors.affiliation: Clinical Department, Dental School, PUCRS - Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Renata Senger
authors.initials: RS
authors.lastname: Niewierowski
authors.affiliation: Clinical Department, Dental School, PUCRS - Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Luíza Rodrigues
authors.initials: LR
authors.lastname: Scalzilli
authors.affiliation: Department of Semiology and Clinics, Dental School, UFPel - Universidade Federal de Pelotas, Pelotas, RS, Brazil.
authors.forename: Renata Dornelles
authors.initials: RD
authors.lastname: Morgental
authors.affiliation: Clinical Department, Dental School, PUCRS - Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: José Antônio Poli de
authors.initials: JA
authors.lastname: Figueiredo
authors.affiliation: Clinical Department, Dental School, PUCRS - Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Fabiana Vieira
authors.initials: FV
authors.lastname: Vier-Pelisser
authors.affiliation: Clinical Department, Dental School, PUCRS - Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Maristela Gutierrez de
authors.initials: MG
authors.lastname: Borba
authors.affiliation: Clinical Department, Dental School, PUCRS - Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Alexandre Corrêa
authors.initials: AC
authors.lastname: Ghisi
mesh_terms: D000818:Animals; D002417:Cattle; D003782:Dental Pulp; D012388:Root Canal Irrigants; D014465:Ultrasonics
chemical_list: D012388:Root Canal Irrigants