Abstract

The author undertook to develop an extraoral model for predicting mandibular incisor relapse similar to the model described by Harvey and Sheldon Peck. Whereas the Peck and Peck method involves intraoral measurements, the method described in this paper relied on the taking of measurements from the patient's pre-treatment plaster models. Two hundred and sixty teeth were measured both orally and on plaster casts, and several statistical tests were performed to isolate any differences between the intraoral and extraoral methods. The principal difference was identified as the faciolingual measurement of the incisor, due to the height of contour often being subgingival on the mandibular incisor. Unfortunately, this discrepancy was not predictable enough to be quantified accurately, thus prohibiting the development of a sufficiently reliable extraoral method for predicting relapse based on a modified Peck and Peck analysis.

Key words: Peck & Peck analysis, mandibular anterior relapse

LLU Discipline

Orthodontics

Department

Dentistry

School

Graduate School

First Advisor

Willis L. Schlenker

Second Advisor

Robert M. Mitchell

Third Advisor

R. David Rynearson

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

1989

Date (Title Page)

6-1989

Language

English

Library of Congress/MESH Subject Headings

Incisor; Dental Models; Dental Occlusion

Type

Thesis

Page Count

iii; 26

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

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