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A COMPARISON OF PREMOLAR EXTRACTION RATES IN SINGLE-PHASE VERSUS TWO-PHASE TREATMENT OF CLASS II MALOCCLUSIONS
by
DanThanh Hoang Nguyen Fields
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)
May 2010
Copyright 2010
DanThanh Hoang Nguyen Fields
Object Description
| Title | A comparison of premolar extraction rates in single-phase versus two-phase treatment of Class II malocclusions |
| Author | Fields, DanThanh Hoang Nguyen |
| Author email | dtfields@gmail.com; fieldsortho@gmail.com |
| Degree | Master of Science |
| Document type | Thesis |
| Degree program | Cranio-Facial Biology |
| School | School of Dentistry |
| Date defended/completed | 2010-03-18 |
| Date submitted | 2010 |
| Restricted until | Unrestricted |
| Date published | 2010-04-06 |
| Advisor (committee chair) | Sameshima, Glenn |
| Advisor (committee member) |
Paine, Michael Moon, Holly |
| Abstract | Introduction: The pros and cons of two-phase treatment of Class II malocclusions have been examined in general. This study specifically evaluates both the ability of growth modification to prevent the need for premolar extractions and the resulting cephalometric outcomes.; Methods: The treatment of 98 patients in a Southern California private practice was evaluated. Records were examined to compare premolar extraction rates and final cephalometric numbers in single- and two-phase cases.; Results: In the single-phase group, 49.2% were treated with premolar extractions and only 22.9% of the two-phase group required premolar extractions – a significant difference (p = 0.01). Final cephalometric measurements showed no significant difference between the two treatment modalities.; Conclusion: Early orthodontic intervention of Class II malocclusions allowed for reduced rates of premolar extraction without compromising the cephalometric outcomes. |
| Keyword | premolar extraction; two-phase treatment; extraction rate |
| 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-m2897 |
| Rights | Fields, DanThanh Hoang Nguyen |
| 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-Fields-3557 |
| Archival file | uscthesesreloadpub_Volume23/etd-Fields-3557.pdf |
Description
| Title | Page 1 |
| Full text | A COMPARISON OF PREMOLAR EXTRACTION RATES IN SINGLE-PHASE VERSUS TWO-PHASE TREATMENT OF CLASS II MALOCCLUSIONS by DanThanh Hoang Nguyen Fields 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) May 2010 Copyright 2010 DanThanh Hoang Nguyen Fields |
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