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FRACTAL ANALYSIS ON DENTAL RADIOGRAPHS
TO DETECT TRABECULAR PATTERNS
IN PATIENTS AFFECTED BY PERIODONTITIS
by
Sophia Sy-Hann Xiang
A Thesis Presented to the
FACULTY OF THE GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
MASTER OF SCIENCE
(CRANIOFACIAL BIOLOGY)
May 2007
Copyright 2007 Sophia Sy-Hann Xiang
Object Description
| Title | Fractal analysis on dental radiographs to detect trabecular patterns in patients affected by periodontitis |
| Author | Xiang, Sophia Sy-Hann |
| Author email | sxiang@usc.edu |
| Degree | Master of Science / Master of Health Administration |
| Document type | Thesis |
| Degree program | Dentistry |
| School | School of Dentistry |
| Date defended/completed | 2007-02-01 |
| Date submitted | 2007 |
| Restricted until | Unrestricted |
| Date published | 2007-04-02 |
| Advisor (committee chair) | Nowzari, Hessam |
| Advisor (committee member) |
Sameshima, Glenn Rich, Sandra |
| Abstract | Objective: To evaluate fractal analysis as a tool to quantitatively measure the impact of periodontal disease on surrounding bone.; Background: The current standard use of dental radiographs is visual inspection, often with no quantitative analysis. Fractal analysis can be used to examine trabecular bone pattern among periodontal patients.; Methods: Patients (n=108) from the USC School of Dentistry were classified into three groups: healthy, moderate, and severe periodontitis. The box-counting-method was used to calculate a fractal dimension.; Results: Significant differences in average fractal dimensions were measured between healthy and moderate-periodontitis groups (p<0.01) and between healthy and severe-periodontitis groups (p< 0.001) in the anterior mandibular region. Higher fractal dimensions were measured in healthy periodontal patients.; Conclusions: Fractal analysis evidenced significant differences between patients affected and not affected by periodontitis in the anterior mandible. The box-counting method quantitatively describes the severity of bone disease and can be used to improve current diagnostic techniques. |
| Keyword | periodontitis; fractal analysis |
| Language | English |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Type | texts |
| Legacy record ID | usctheses-m341 |
| Rights | Xiang, Sophia Sy-Hann |
| Repository name | Libraries, University of Southern California |
| Repository address | Los Angeles, California |
| Repository email | http://www.usc.edu/isd/libraries/services/ask_a_librarian/email/ |
| Filename | etd-Xiang-20070402 |
| Archival file | uscthesesreloadpub_Volume26/etd-Xiang-20070402.pdf |
Description
| Title | Page 1 |
| Full text | FRACTAL ANALYSIS ON DENTAL RADIOGRAPHS TO DETECT TRABECULAR PATTERNS IN PATIENTS AFFECTED BY PERIODONTITIS by Sophia Sy-Hann Xiang A Thesis Presented to the FACULTY OF THE GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree MASTER OF SCIENCE (CRANIOFACIAL BIOLOGY) May 2007 Copyright 2007 Sophia Sy-Hann Xiang |
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