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RATE OF BONE LOSS IN FURCATION-INVOLVED MOLARS:
A RETROSPECTIVE ANALYSIS
by
Clara S. Kim
A Thesis Presented to the
FACULTY OF THE USC GRADUATE SCHOOL
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
MASTER OF SCIENCE
(CRANIOFACIAL BIOLOGY)
August 2010
Copyright 2010 Clara S. Kim
Object Description
| Title | Rate of bone loss in furcation-involved molars: a retrospective analysis |
| Author | Kim, Clara S. |
| Author email | clarakim79@gmail.com; soojk1207@hotmail.com |
| Degree | Master of Science |
| Document type | Thesis |
| Degree program | Cranio-Facial Biology |
| School | School of Dentistry |
| Date defended/completed | 2010-05-28 |
| Date submitted | 2010 |
| Restricted until | Unrestricted |
| Date published | 2010-06-01 |
| Advisor (committee chair) | Nowzari, Hessam |
| Advisor (committee member) |
Rich, Sandra Navazesh, Mahvash |
| Abstract | Background: Periodontal attachment loss around multi-rooted teeth can lead to exposure of furcation sites and colonization of periodontopathogens. Furcation-involved teeth are often given a poor prognosis and are considered unpredictably responsive to conventional treatments. Objective: To determine radiographic bone loss patterns over time, testing the hypothesis that bone loss in furcation sites is more rapid and extensive than that at interproximal sites. Methods: Existing radiographs were analyzed to compare rate of bone loss between furcation and interproximal sites of the same tooth. Selection criteria included mandibular molars with furcation involvement and a minimum follow-up of 5 years. Using ImageJ software, anatomical landmarks (CEJ, furca, apex) were located and measured corono-apically. P-values for differences between interproximal and furcation bone loss and sub-groups associations were calculated using Wilcoxon signed-rank test. Results: Follow-up time for 29 teeth from 19 patients ranged from 5 to 12 years (mean = 6.3 years). Bone level change over time averaged 4.22 % + 2.49 (range: 0.04 – 13.9) for interproximal sites and 4.55% + 2.84 (range: 0.49 – 15.52) for furcation sites. Significant bone loss (p < 0.05) was noted in furcation sites for the non-compliant sub-group. No other sub-group variables were associated with bone loss. Conclusion: In this study, there were no overall significant differences in bone loss over time between furcation sites and interproximal sites of the same tooth. |
| Keyword | furcation; molars; mandibular |
| 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 |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m3107 |
| Rights | Kim, Clara S. |
| 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-Kim-3779 |
| Archival file | uscthesesreloadpub_Volume14/etd-Kim-3779.pdf |
Description
| Title | Page 1 |
| Full text | RATE OF BONE LOSS IN FURCATION-INVOLVED MOLARS: A RETROSPECTIVE ANALYSIS by Clara S. Kim A Thesis Presented to the FACULTY OF THE USC GRADUATE SCHOOL UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree MASTER OF SCIENCE (CRANIOFACIAL BIOLOGY) August 2010 Copyright 2010 Clara S. Kim |
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