Abstract
The effects of Class II intermaxillary elastics were studied by means of serial cephalometric records on 24 Class II malocclusions. All of the cases were non-extraction and no headgear was employed. Lateral cephalometric radiographs were taken prior to, and immediately following, the removal of the elastics. The amount of normal, growth adjustments was considered in all measurements. Molar movement and anatomical plane changes were analyzed statistically. The Student t-test were used to evaluate the significant changes.
The following conclusions are based upon a statistical analysis of the observed changes:
- The maxillary first molars did not move distally with respect to PTV.
- The anterior nasal spine was brought back slightly. This was probably due to a point A change.
- The palatal plane tip was not significant.
- The mandibular first molars moved forward with respect to PTV and Po. These changes were restricted to the alveolar process.
- There was an unexpectedly small amount of extrusion of the mandibular first molars, perhaps due to a predominantly brachyfacial and mesofacial sample.
- convexity [sic] decreased approximately 1 mm. more than could be anticipated with normal growth.
LLU Discipline
Orthodontics
Department
Orthodontics and Dentofacial Orthopedics
School
Graduate School
First Advisor
Lee E. Olsen
Second Advisor
James R. Wise
Third Advisor
J. Milford Anholm
Fourth Advisor
Ray M. Hymer
Fifth Advisor
Gary G. Morikone
Sixth Advisor
Ronald C. Parker
Degree Name
Master of Science (MS)
Degree Level
M.S.
Year Degree Awarded
1979
Date (Title Page)
5-1979
Language
English
Library of Congress/MESH Subject Headings
Malocclusion; Orthodontic Appliances
Type
Thesis
Page Count
vi; 31
Digital Format
Digital Publisher
Loma Linda University Libraries
Copyright
Author
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.
Recommended Citation
Autrapiromsook, Sing, "A Cephalometric Evaluation of the Dentofacial Changes Effected with Non-extraction Treatment Utilizing Class II Intermaxillary Elastics" (1979). Loma Linda University Electronic Theses, Dissertations & Projects. 2439.
https://scholarsrepository.llu.edu/etd/2439
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