Pat DiCiccio

Abstract

This study was performed to determine the accuracy and reliability of the long range growth predictions for profile structures by three computer software systems (QuickCeph™ for Apple Macintosh™ systems. Rocky Mountain Data Systems™ for IBM™ mainframe systems, and Facial Print™ for IBM™ personal computers), on untreated individuals. The total sample consisted of 90 Caucasian children from the Burlington Growth Centre. These were subdivided into groups of 15 children in each of mesiofacial, dolichofacial, and brachyfacial growth types for both males and females, with Angle class I occlusions, normal overbite, and normal overjet. Points measured consisted of 14 skeletal and soft tissue landmarks commonly used by clinical orthodontists in determining the patient's profile and anterior limits of the bony bases.

In comparing the projected growth for the three systems and the actual growth no system was clearly more accurate and predictable. Composite superimpositions of the total 90 subject sample had very similar results for all three systems. All three systems were also more accurate in predicting the eventual location of the landmarks studied in females for both intermediate forecasts and predictions to maturity. All systems were more accurate in predicting maxillary landmarks when compared to mandibular points evaluated. Similarly, x axis coordinates and skeletal points were more accurately predicted when compared to y axis coordinates and soft tissue points.

LLU Discipline

Orthodontics

Department

Dentistry

School

Graduate School

First Advisor

William J. Emmerson

Second Advisor

Robert D. Mitchell

Third Advisor

R. David Rynearson

Fourth Advisor

John E. Peterson

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

1993

Date (Title Page)

6-1993

Language

English

Library of Congress/MESH Subject Headings

Orthodontics; Cephalometry; Forecasting; Computer Simulation; Growth

Type

Thesis

Page Count

iv; 73

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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