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Chapter-14 Obturation of Root Canal

BOOK TITLE: Review of Endodontics and Operative Dentistry

Author
1. Garg Nisha
2. Garg Amit
ISBN
9788184483864
DOI
10.5005/jp/books/10735_14
Edition
1/e
Publishing Year
2008
Pages
9
Author Affiliations
1. Ex-Resident, Government Dental College, Patiala, Presently at, Manav Rachna Dental College, Faridabad, Haryana, India, Manav Rachna Dental College, Faridabad, Haryana, India, Government Dental College, Patiala, Sri Sukhmani Dental College and Hospital, Dera Bassi, Mohali, Punjab, India, Bhojia Dental College and Hospital, Baddi, Himachal Pradesh, India
2. Government Dental College, PGIMS, Rohtak, Haryana, India, Manav Rachna Dental College, Faridabad, Haryana, India, Sri Sukhmani Dental College and Hospital, Dera Bassi, Mohali, Punjab, India, Fortis Escorts Heart Institute, New Delhi, India
Chapter keywords

Abstract

The rationale of root canal treatment relies on the fact that the nonvital pulp, being avascular, has no defense mechanisms. The damaged tissue within the root canal undergoes autolysis and the resulting break down products diffuse into the surrounding tissues. They cause periapical irritation associated with the portals of exit even in the absence of bacterial contamination. It is essential therefore, that endodontic therapy must seal the root canal system three dimensionally so as to prevent tissue fluids from percolating in the root canal and toxic by-products from both necrotic tissue and microorganisms regressing into the periradicular tissues. The current accepted method of obturation of prepared canals employs the use of solid or a semisolid core such as gutta- percha and a root canal sealer. Gutta-percha has no adhesive qualities to dentin regardless of the obturation technique used. Therefore use of root canal sealer along with solid core plays a major role in achieving the hermetic seal by filling the accessory root canals, voids, spaces and irregularities and hence reducing the chances of failure of root canal treatment.

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