Obturation
Pronunciation: ob-tyoo-RAY-shun
The process of filling and sealing the prepared root canal system with an inert material, most commonly gutta-percha, to prevent reinfection.
Full Definition
Obturation is the final endodontic step in which the cleaned and shaped root canal system is filled (obturated) with a biocompatible material, typically gutta-percha combined with a sealer cement. The goal is to create a three-dimensional, hermetic seal that prevents bacterial ingress and recontamination. Obturation quality is commonly assessed radiographically and is a key endpoint documented in root canal treatment records. Editors should not confuse 'obturation' with 'restoration', which refers to the coronal seal placed after the endodontic procedure.
Usage
Usage note: Editors should distinguish 'obturation' (filling of the root canal) from the subsequent coronal 'restoration'. Both may be documented in the same treatment episode but refer to distinct procedures.
In Context
- "Obturation of the mesial and distal canals was completed using warm vertical compaction of gutta-percha." — Endodontic treatment record
- "Post-obturation radiographs confirmed a well-condensed fill to the working length with no voids evident." — Radiology report