Abstract

Purpose: The purpose of this study was to evaluate the accuracy of digital workflow by evaluating the absolute technical differences in various scanning methods on jaw models with scanning bodies.

Material and Methods: Twenty identical 3-dimensionally printed mandibular quadrant jaw models with a single implant and scanning body replacing a missing tooth in area #19 were examined. Cone beam computed tomography .STL files were used as the first test group. Intraoral scans were used as the second test group. Desktop scans of each model and the .STL file was used as a control. The .STL files were then superimposed onto each other using imaging software. Absolute differences were measured by manually selecting the same seven points in each model, and a best fit model was generated using 20,000 points of measurement. The average distance and standard deviation for each superimposition was generated by the software, and statistic evaluation was then conducted.

Results: The results revealed a statistically significant difference between both test groups and the control. A mean difference of .10 mm with a standard deviation of .044 for the CBCT scanned image files, and .05 mm with a standard deviation of .011 for the IOS scanned image files. Under the clinical significant value of .5 mm, both groups were significantly less than 0.5mm with p

Conclusion: The results show that the CBCT and IOS test group scanned files were statistically significantly different from the control desktop scans. Clinically, the differences may not be detectable.

LLU Discipline

Periodontics

Department

Periodontics

School

School of Dentistry

First Advisor

Erik Sahl

Second Advisor

Kenneth Abramovitch

Third Advisor

Yoon Jeong Kim

Fourth Advisor

Heidi Kohltfarber

Fifth Advisor

Dwight Rice

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

2018

Date (Title Page)

6-2018

Language

English

Library of Congress/MESH Subject Headings

Photography, Dental -- instrumentation

Type

Thesis

Page Count

xi, 23 p.

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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