Abstract

The healing potential of an endodontic lesion is usually greater than a periodontic lesion (Simon et al. 1972; Hiatt 1977). Periodontal regeneration places particular emphasis on the soft tissue-tooth interface (Stahl 1977). This interface was examined in fifteen extracted human teeth.

The teeth were divided into three groups: (1) periapical lesions, (2) periodontal lesions, and (3) healthy periodontal tissue. Criteria were established for each group. Freshly extracted human teeth meeting the criteria were fixed in gluteraldehyde or paraformaldehyde. The teeth were then selected for surface observation or cracked for cross sectional examination. The teeth were post fixed, dehydrated, and coated for viewing with an AMR Model 1000 scanning electron microscope.

The root surfaces were examined and comparison was made in the following areas: (1) remaining fibrous attachment, (2) presence of cells, (3) root resorption, (4) cementum surface contour, and (5) presence of plaque or calculus.

Resorption and secondary cementum repair were common in periapical disease. Resorption was seldom seen in periodontal disease. Bacteria were present in the periodontal pocket but not on the periapically involved root surface. The root surface is denuded in the periodontal pocket while the periapical surface may have considerable fiber attachment remaining. Sharpey's fibers were found in the cementum subjacent to both periapical and periodontal disease.

Department

Dentistry

School

Graduate School

First Advisor

James H.S. Simon

Second Advisor

James A. Abbott

Third Advisor

Leif K. Bakland

Fourth Advisor

Robert D. Kiger

Fifth Advisor

William L. Young

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

1978

Date (Title Page)

6-1978

Language

English

Library of Congress/MESH Subject Headings

Endodontics

Type

Thesis

Page Count

vi; 85

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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