title: [SEM studies on root canal preparation using ultrasound].
abstract: The root canals of 35 extracted mandibular incisors were instrumented with the ultrasonic-system alone or in combination with hand instruments. Hand instrumentation was compared with ultrasonic instrumentation. Following instrumentation the teeth were prepared for SEM examination. It was concluded that hand instrumentation using reamers was superior to ultrasonic debridement. After initial preparation and finally shaping with hand instruments the ultrasonic device shows good efficiency in cleaning straight root canals.
authors.forename: R
authors.initials: R
authors.lastname: Beer
authors.forename: P
authors.initials: P
authors.lastname: Gängler
mesh_terms: D003786:Dental Pulp Cavity / Q000601:surgery*; D006801:Humans; D007180:Incisor; D008855:Microscopy, Electron, Scanning; D012390:Root Canal Therapy / Q000295:instrumentation / Q000379:methods*; D014464:Ultrasonic Therapy / Q000295:instrumentation / Q000379:methods*
vernacular_title: Rasterelektronenmikroskopische Untersuchung der Wurzelkanalaufbereitung mit Ultraschall.