title: Modified usage of the Masserann kit for removing intracanal broken instruments.
abstract: The Masserann kit is a hollow tube device specially designed for the removal of intracanal metallic objects. This report describes some modifications in the usage of this device for effective removal of tightly bound intracanal broken instruments whose diameter is relatively large at the coronal end. The techniques described are: (1) modification of the extractor to ensure gripping by creating a wider space inside the tube; and (2) combined use of the modified extractor with an ultrasonic device and a surgical operating microscope. A clinical case demonstrating that these modifications resulted in successful retrieval of firmly wedged instruments is presented.
authors.affiliation: General Dentistry and Clinical Education Unit, Niigata University Dental Hospital, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Okiji
mesh_terms: D000328:Adult; D003762:Dental Instruments; D003786:Dental Pulp Cavity; D004868:Equipment Failure; D005547:Foreign Bodies / Q000209:etiology / Q000601:surgery*; D006801:Humans; D008297:Male; D019647:Oral Surgical Procedures / Q000295:instrumentation*; D018915:Root Canal Preparation / Q000009:adverse effects / Q000295:instrumentation*