Abstract

Sealing of the root canal system is usually accomplished by the conservative endodontic approach. Cases where it is impossible to treat nonsurgically are usually treated surgically by an apicoectomy and retrofill. There is a lot of controversy in the literature over which retrofilling material is closest to ideal. Presently, the most popular materials seem to be Amalgam, Super EBA, and IRM. For this reason, these materials were chosen for this study to evaluate the leakage potential at two different time intervals to see if setting time of the material had any influence on the amount of leakage.

Seventy extracted single rooted human anterior teeth were used in this study. The anatomical crowns were removed, and the roots were cleaned and shaped by conventional stepback technique. Gutta-percha and Roth's sealer were used to seal all the roots. Two coats of nail polish were placed on all surfaces except on the apical area. The roots were then resected and retrofilled with one of the test materials. Either the roots were placed immediately into India ink or the material was allowed to set for 24 hours before placement into the India ink. Teeth were then decalcified and linear dye leakage measurements were taken.

Super EBA and IRM showed significantly less dye leakage than amalgam. No significant difference existed between Super EBA and IRM. Time had no significant influence on the leakage data. All materials tended toward more leakage after being allowed to set for 24 hours before being placed into India ink.

Department

Dentistry

School

Graduate School

First Advisor

Mahmoud Torabinejad

Second Advisor

Douglas J. McKendry

Third Advisor

Paul J. McMillan

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

1992

Date (Title Page)

8-1992

Language

English

Library of Congress/MESH Subject Headings

Dental Amalgum -- analysis; Dental Cements -- analysis; Dental Leakage; Root Canal Obturation

Type

Dissertation

Page Count

2 v; 75

Digital Format

PDF

Digital Publisher

Loma Linda University Libraries

Usage Rights

This title appears here courtesy of the author, who has granted Loma Linda University a limited, non-exclusive right to make this publication available to the public. The author retains all other copyrights.

Collection

Loma Linda University Electronic Theses and Dissertations

Collection Website

http://scholarsrepository.llu.edu/etd/

Repository

Loma Linda University. Del E. Webb Memorial Library. University Archives

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