title: Preliminary report on the application of pulsed CO2 laser radiation on root canals with AgCl fibers: a scanning and transmission electron microscopic study.
abstract: Fifteen maxillary central incisors were treated in vitro with pulsed CO2 laser radiation (wavelength:9.6-microns pulse duration:135-microseconds pulse energy:60 mJ energy density:12 J/cm2) delivered by an AgCl fiber into the root canal. Preliminary results show opening of dentin tubules as well as fused areas of hydroxyapatite in the root canal after laser treatment. Temperature measurement at the root surface showed that 40 degrees C was not exceeded. These preliminary results show the ability of this laser system to open dentin tubules and to fuse hydroxyapatite but further development in fiber technology is necessary to achieve predictable results.
authors.affiliation: Department of Endodontics, Ege University, Dental Faculty, Bornova-Izmir, Turkey.
authors.forename: B
authors.initials: B
authors.lastname: Onal
authors.forename: T
authors.initials: T
authors.lastname: Ertl
authors.forename: G
authors.initials: G
authors.lastname: Siebert
authors.forename: G
authors.initials: G
authors.lastname: Müller
mesh_terms: D002245:Carbon Dioxide; D003737:Dental Cavity Preparation / Q000295:instrumentation*; D003786:Dental Pulp Cavity / Q000528:radiation effects*; D003804:Dentin / Q000528:radiation effects* / Q000648:ultrastructure; D017886:Durapatite / Q000528:radiation effects; D005336:Fiber Optic Technology; D006801:Humans; D007180:Incisor; D053685:Laser Therapy; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning; D012390:Root Canal Therapy / Q000295:instrumentation*; D018030:Silver Compounds
chemical_list: D018030:Silver Compounds; D002245:Carbon Dioxide; D017886:Durapatite; C037548:silver chloride