Abstract

Study casts and cephalograms were obtained on 18 female and 21 male Pima Indian students from the Stewart Indian Boarding School, Carson City, Nevada. Dentitional characteristics were assessed both clinically and by study casts. Cranio-facial analyses were performed by utilizing the skeletal and denture pattern variables suggested by the Downs and Riedel cephalometric analyses.

The purpose of this study was two-fold: (1) to determine the extent to which the Pima conforms to the Mongoloid master pattern, and (2) to test whether or not significant differences exist between the Pima and other Mongoloid groups which would allow discrimination.

The results of this study indicate that the Pima conforms to the Mongoloid master pattern in possessing (1) a high (69 per cent) frequency of shoveling, (2) a low maxillary central to lateral incisor difference (1.42 difference of means), and (3) a relatively low incidence (19.5 per cent) of Carabelli's cusp. The Pimas differed from the master pattern in possessing only a 5.4 percent incidence of mandibular tori contrasted with a 35 per cent incidence found in the Aleut.

Based upon the characteristics of the facial and dentitional complex sensitive statistical analyses indicate that significant differences exist between the Pima and other Mongo groups. The results of a stepwise discriminant function analysis indicate the Pima and Papago show many similarities and that both differ significantly from the Apache. The Pima, Apache and Papago all exhibit significant differences from the Mayos and Charaulas beyond the .05 level.

LLU Discipline

Orthodontics

Department

Dentistry

School

Graduate School

First Advisor

Thomas J. Zwemer

Second Advisor

Gayle H. Nelson

Third Advisor

Howard W. Conley

Fourth Advisor

P. William Dysinger

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

1966

Date (Title Page)

6-1966

Language

English

Library of Congress/MESH Subject Headings

Orthodontic Brackets -- standards; Dental Stress Analysis

Type

Thesis

Page Count

1 vi; 37

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

Download

Share

COinS