Wuiteng Koh

Abstract

The purpose of this study was to evaluate the prevalence of specific cell types and structures at the active tooth movement site in corticotomized and non-corticotomized specimens obtained from a previous study, and to consider the hypothesis that corticotomy facilitated orthodontics is efficacious due to an inflammatory response rather than tooth-bone block movement. Specimens from 3 monkeys, each of which had a treatment and control quadrant in each arch, were sectioned, mounted on glass slides, and stained with Giemsa, haematoxylin, and Safranin stains. A histomorphometric analysis was performed with DataVoice™, a voice activated computer system which allowed for digitization of each slide. Variables to be measured and compared were number of blood vessels, blood vessel width, number of osteoclasts, periodontal width, trabecular bone width, types of bone surfaces presented, and percentage of tooth resorption. Sample size and time of animal sacrifice lent limitations to this study. The results showed expected differences between pressure and tension sides of each root. Between corticotomized and non-corticotomized groups, however, no statistically significant differences could be found. Still, there were some trends towards increased vascularity and osteoclastic activity in the corticotomized groups, showing that perhaps inflammation is the key to corticotomy facilitated orthodontics.

Key words: Corticotomy, Histomorphometric Analysis, DataVoice™

LLU Discipline

Orthodontics

Department

Dentistry

School

Graduate School

First Advisor

R. David Rynearson

Second Advisor

Paul C. Engen

Third Advisor

Paul J. McMillan

Fourth Advisor

Willis L. Schlenker

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

1991

Date (Title Page)

6-1991

Language

English

Library of Congress/MESH Subject Headings

Periodontium -- physiology; Primates; Orthodontics -- methods

Type

Thesis

Page Count

1 iii; 50

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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