Abstract
Human teeth mounted in individual plaster blocks were studied to determine the actual location of the root canal filling when it appears to be exactly at the radiographic apex. The original sample consisted of 109 teeth treated during endodontic technique class by junior dental students at Loma Linda University. In the most ideal manner possible, these teeth were radiographed on a flat surface with the x-ray tube perpendicular to the film and blocked tooth.
Five dentists examined the radiographs, and each one independently listed the canals he judged filled exactly to the radiographic apex. The investigator sorted out the choices and selected all canals judged filled exactly to the radiographic apex by at least two men for the study.
Forty-five teeth with fifty root canals met this requirement. Those teeth were separated from the plaster blocks and their apices studied under 20 x with a dissecting microscope.
The investigator reported that 48 percent of the canals had fillings extending beyond the apical foramen, while 30 percent of the fillings were flush with the apical foramen and 22 percent were short. It was also established that 79.5 percent of the foramen were located outside the apical vertex.
Department
Dentistry
School
Graduate School
First Advisor
Ronald E. Buell
Second Advisor
Edwin M. Collins
Third Advisor
Elmer E. Kelln
Fourth Advisor
Edwin B. Nutting
Degree Name
Master of Science (MS)
Degree Level
M.S.
Year Degree Awarded
1969
Date (Title Page)
6-1969
Language
English
Library of Congress/MESH Subject Headings
Dental Pulp Cavity
Type
Thesis
Page Count
vi; 34
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
Niccoli, Dominic J., "Correlation of the Actual Position of the Root Canal Filling in Human Teeth to its Apparent Location on the Radiograph" (1969). Loma Linda University Electronic Theses, Dissertations & Projects. 2137.
https://scholarsrepository.llu.edu/etd/2137
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
Included in
Analytical, Diagnostic and Therapeutic Techniques and Equipment Commons, Dental Materials Commons, Endodontics and Endodontology Commons