Elimination of Intracanal Metallic Obstructions by Abrasion Using an Operational Microscope and Ultrasonics

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Intracanal metallic obstructions that block any further treatment often prevent the clinician from achieving total cleanliness of the root canal system. For the retrieval of these obstructions, most of the methods described suggest creating and enlarging a space around the obstruction to loosen it before its retrieval. This article describes a technique that consists of mechanical abrasion of the obstruction without altering canal walls by using an operational microscope and ultrasonic spreader.

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