Abstract

Several animal models have been proposed to develop pulpal inflammation. Procedures recommended in these models have many variables and have not produced consistent results. The purpose of this study was to create pulpal inflammation using the Nd:YAG laser.

Forty-five cuspids of 12-18 month old beagle dogs were lased at 5, 7.5, and 10 watts (W) for 20 seconds with a 600 micron contact probe. Five cuspids were not lased but were used as controls. Following laser application, the teeth were extracted at intervals of 3, 7, and 30 days. They were then fixed in 10% formalin, decalcified, sectioned, and stained with H & E. The degree of pathological change in each pulp was graded.

Three of the five 5 W specimens were mildly inflamed at 3 days. Only two were inflamed at 7 days and none at 30 days. All of the 7.5 W samples were inflamed at 3 days. At 7 days, three were severely inflamed and exhibited microabscesses while two were non-vital. At 30, days only one was inflamed and one was non-vital. All of the 10 W specimens showed moderate to severe inflammation at 3 days with one being necrotic. At 7 days, two were inflamed and three were necrotic. By 30 days, only two samples were viable and both were severely inflamed.

These results indicate that different degrees of pulnal pathosis can be produced by application of various fluences of Nd:YAG laser.

Department

Dentistry

School

Graduate School

First Advisor

Mahmoud Torabinejad

Second Advisor

Paul McMillan

Third Advisor

Douglas Arendt

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

1996

Date (Title Page)

8-1996

Language

English

Library of Congress/MESH Subject Headings

Dental Pulp; Pulpitis; Lasers; Necrosis

Type

Thesis

Page Count

2 vi; 51

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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