title: Sealing ability of MTA used as a root end filling material: effect of the sonic and ultrasonic condensation.
abstract: Despite the excellent properties of mineral trioxide aggregate (MTA), the condensation technique may have some influence in its sealing ability. The purpose of this study was to compare the sealing ability of sonic and ultrasonic setting of MTA. Thirty-four extracted human teeth had their canals prepared and filled with Sealapex sealer and gutta-percha using the active lateral condensation technique. The teeth were rendered waterproof and apicoectomy performed at 3 mm from the apex. Root-end cavities (3.0 mm deep and 1.4 mm diameter) were prepared with diamond ultrasonic tips. The root-end cavities were filled with Pro-Root MTA® with ultrasonic vibration, sonic vibration or no vibration. The positive control group did not receive any material while the negative control group was totally rendered waterproof. After material set, the specimens were immersed in Rodhamine B for 24 h, under vacuum in the first 15 min, then washed, dried and split longitudinally for evaluating the infiltration at the dentin/material interface. Data were analyzed using ANOVA and Tukey's tests at 5% significance level. Sonic vibration promoted the lowest infiltration values (p<0.05). It was concluded that sonic vibration could be considered an efficient aid to improve the sealing ability of MTA when used as root-end filling material.
authors.affiliation: Department of Restorative Dentistry, Araçatuba Dental School, UNESP - Univ Estadual Paulista, Araçatuba, SP, Brazil.
authors.forename: Pedro Felício Estrada
authors.initials: PF
authors.lastname: Bernabé
authors.forename: João Eduardo
authors.initials: JE
authors.lastname: Gomes-Filho
authors.forename: Daniel Galera
authors.initials: DG
authors.lastname: Bernabé
authors.forename: Mauro Juvenal
authors.initials: MJ
authors.lastname: Nery
authors.forename: José Arlindo
authors.initials: JA
authors.lastname: Otoboni-Filho
authors.forename: Eloi
authors.initials: E
authors.lastname: Dezan
authors.forename: Luciano Tavares Angelo
authors.initials: LT
authors.lastname: Cintra
mesh_terms: D017607:Aluminum Compounds / Q000627:therapeutic use*; D001047:Apicoectomy / Q000379:methods; D017610:Calcium Compounds / Q000627:therapeutic use*; D002126:Calcium Hydroxide / Q000627:therapeutic use; D001840:Dental Bonding; D003804:Dentin / Q000648:ultrastructure; D018130:Diamond / Q000737:chemistry; D004338:Drug Combinations; D005456:Fluorescent Dyes; D006171:Gutta-Percha / Q000627:therapeutic use; D006801:Humans; D010087:Oxides / Q000627:therapeutic use*; D012184:Retrograde Obturation / Q000379:methods*; D012235:Rhodamines; D012387:Root Canal Filling Materials / Q000627:therapeutic use*; D018915:Root Canal Preparation / Q000295:instrumentation / Q000379:methods; D012459:Salicylates / Q000627:therapeutic use; D017640:Silicates / Q000627:therapeutic use*; D013010:Sonication; D013499:Surface Properties; D013997:Time Factors; D014465:Ultrasonics / Q000295:instrumentation; D014732:Vibration
chemical_list: D017607:Aluminum Compounds; D017610:Calcium Compounds; D004338:Drug Combinations; D005456:Fluorescent Dyes; D010087:Oxides; D012235:Rhodamines; D012387:Root Canal Filling Materials; D012459:Salicylates; D017640:Silicates; C086631:mineral trioxide aggregate; C055601:Sealapex; D018130:Diamond; D006171:Gutta-Percha; C029773:rhodamine B; D002126:Calcium Hydroxide