title: Evaluation of Chlorine Dioxide Irrigation Solution on the Microhardness and Surface Roughness of Root Canal Dentin.
abstract: The aim of this study was to evaluate the effect of chlorine dioxide and various other more common irrigation solutions on the microhardness and surface roughness of root canal dentin. Fifty human maxillary central incisors were sectioned longitudinally and treated for 1 minute with 5 ml of the following aqueous solutions (v/v%): Group 1: 13.8% chlorine dioxide, Group 2: 17% ethylene diamine tetraacetic acid (EDTA). Group 3: 7% maleic acid, Group 4: 2.5% sodium hypochlorite (5 ml/min), Group 5: Saline (control). Specimens were subjected to microhardness and surface roughness testing. Chlorine dioxide and sodium hypochlorite reduced the microhardness more than other test agents. The highest surface roughness was produced with maleic acid. Chlorine dioxide should be used cautiously during chemomechanical preparation of the root canal system in order to prevent untoward damage to the teeth.
authors.forename: Nidambur Vasudev
authors.initials: NV
authors.lastname: Ballal
authors.forename: Deepika
authors.initials: D
authors.lastname: Khandewal
authors.forename: Saravana
authors.initials: S
authors.lastname: Karthikeyan
authors.forename: Krishnaraj
authors.initials: K
authors.lastname: Somayaji
authors.forename: Federico
authors.initials: F
authors.lastname: Foschi
mesh_terms: D017606:Chlorine Compounds / Q000494:pharmacology*; D003786:Dental Pulp Cavity / Q000187:drug effects* / Q000648:ultrastructure; D003804:Dentin / Q000187:drug effects* / Q000648:ultrastructure; D004492:Edetic Acid / Q000494:pharmacology; D006244:Hardness; D006801:Humans; D008298:Maleates / Q000494:pharmacology; D008422:Materials Testing; D018625:Microscopy, Atomic Force; D010087:Oxides / Q000494:pharmacology*; D012388:Root Canal Irrigants / Q000494:pharmacology*; D012965:Sodium Chloride; D012973:Sodium Hypochlorite / Q000494:pharmacology; D019227:Tooth Apex / Q000187:drug effects / Q000648:ultrastructure
chemical_list: D017606:Chlorine Compounds; D008298:Maleates; D010087:Oxides; D012388:Root Canal Irrigants; D012965:Sodium Chloride; C025109:chlorine dioxide; C030272:maleic acid; D004492:Edetic Acid; D012973:Sodium Hypochlorite