title: [Mechanical instrumentation of the root canals. A study using SEM and computerized image analysis].
abstract: The effectiveness of ultrasonic and sonic instrumentation in eliminating the smear layer from instrumented root channels. The results were examined with S.E.M. and the effective areas of dental diffusion were calculated using the computerized image analyzer. The agents used: citric acid at concentrations of 10, 25 and 50% as well as 15% EDTA, proved their efficiency with both types of mechanical instrumentation. However, the area of diffusion found was always greater using the ultrasonic instrumentation technique as opposed to the sonic instrumentation technique. 1, 2.5 and 5.25% sodium hypochlorite, as well as 10 volume hydrogen peroxide were not effective in eliminating the smear layer using both types of instrumentation.
authors.affiliation: Faculté d'Odontologie, Universitè de Grenade.
authors.forename: C M
authors.initials: CM
authors.lastname: Ferrer Luque
authors.forename: S
authors.initials: S
authors.lastname: González López
authors.forename: J M
authors.initials: JM
authors.lastname: Navajas Rodríguez de Mondelo
mesh_terms: D019343:Citric Acid / Q000494:pharmacology; D003804:Dentin / Q000187:drug effects / Q000648:ultrastructure; D004058:Diffusion; D004305:Dose-Response Relationship, Drug; D004492:Edetic Acid / Q000494:pharmacology; D006801:Humans; D006861:Hydrogen Peroxide / Q000494:pharmacology; D007091:Image Processing, Computer-Assisted; D066298:In Vitro Techniques; D008855:Microscopy, Electron, Scanning; D012388:Root Canal Irrigants / Q000494:pharmacology; D018915:Root Canal Preparation / Q000295:instrumentation* / Q000379:methods; D016369:Smear Layer; D012973:Sodium Hypochlorite / Q000494:pharmacology; D013010:Sonication
chemical_list: D012388:Root Canal Irrigants; D019343:Citric Acid; D004492:Edetic Acid; D006861:Hydrogen Peroxide; D012973:Sodium Hypochlorite