COMPARATIVE STUDY OF THREE DIFFERENT TECHNIQUES FOR BROKEN INSTRUMENT REMOVAL

Hafez, Mennattullah Mohsen; Ghobashy, Ahmed Mostafa; Hassanein, Ehab Elsaied

doi:10.21608/edj.2017.76337

COMPARATIVE STUDY OF THREE DIFFERENT TECHNIQUES FOR BROKEN INSTRUMENT REMOVAL

Document Type : Original Article

Authors

¹ Assistant Lecturer, Department of Endodontics, Misr International University.

² Lecturer, Department of Endodontics, Misr International University.

³ Professor, Department of Endodontics, Misr International University.

10.21608/edj.2017.76337

Abstract

The purpose was to evaluate three systems for broken instrument retrieval (Ultrasonic, Instrument Retrieval System “IRS”, and Microtube + Cyanoacrylate Adhesive). Cross-sectional area, time, and perforation incidences were recorded. A total of 60 extracted molar teeth were used. Teeth were placed in a cast compound arch shaped mold to facilitate handling. Teeth were divided into two groups according to type of motion used Group I: Reciprocating motion (n=30)
Group II: continuous rotation motion (n=30), and three subgroups according to the retrieval instrument used. Concerning retrieval time, Ultrasonics showed least time needed for retrieval in comparison to IRS and Microtubes. Ultrasonics can be used as universal retrieval systems for canal obstructions.

Keywords