Retrieval of a separated instrument using Masserann technique

Abstract

The fracture of endodontic instruments is a procedural problem creating a major obstacle to normal routine therapy. The separated instrument, particularly a broken file, leads to metallic obstruction in the root canal and impedes efficient cleaning and shaping. When an attempt to bypass such a fragment becomes difficult, it should be retrieved by mechanical devices. Masserann kit is one such device for orthograde removal of intracanal metallic obstructions. These clinical cases demonstrate the usage of Masserann technique in removal of separated instruments in anterior and also the posterior teeth.

Keywords: Instrument retrieval; Masserann technique; instrument separation.

Figure 1

K-file showing the working part of the file (16 mm)

Figure 2

K-file showing the diameter at the fractured end of the file

Figure 3

Masserann extractor, along with the removed fragment

Figure 4

(a) – Radiograph showing the separated file in the distobuccal canal; (b) – Trephan centered over the fragment; (c) – Reobturated 16

Figure 5

(a) – Radiograph showing the separated file in the distolingual canal; (b) – Extractor with plunger sleeving and gripping the fragment; (c) – Post-obturation 36, 37

Figure 6

(a) – Radiograph showing the separated file; (b) – Extractor with plunger sleeving and gripping the fragment; (c) – Post-endodontic restoration given