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Full-Text Articles in Dental Materials
Histological Comparison Of Human Pulpal Tissue Reactions After Vital Partial Pulpectomies Using N-2, Dycal And Zoe Paste, David P. Clark
Histological Comparison Of Human Pulpal Tissue Reactions After Vital Partial Pulpectomies Using N-2, Dycal And Zoe Paste, David P. Clark
Loma Linda University Electronic Theses, Dissertations & Projects
A histological comparison of forty-four human teeth in which vital partial pulpectomies were performed, and the pulp stumps covered with dycal, N-2 and ZOE was carried out. The time interval at which the teeth were extracted for study was ten, twelve and fourteen weeks. These teeth were on patients twelve through seventeen years of age and were to he extracted for orthodontic purposes. The teeth were caries free, vital and asymptomatic. The percent retaining vital tissue, time intervals and type of paste were as follows:
- 14 week, dycal 75%
- 14 week, N-2 100%
- 12 week, ZOE 30%
- 12 week, N-2 …
Heat Treatment Of Chrome Cobalt Alloy Orthodontic Wire, Galen M. Fillmore
Heat Treatment Of Chrome Cobalt Alloy Orthodontic Wire, Galen M. Fillmore
Loma Linda University Electronic Theses, Dissertations & Projects
Chrome cobalt alloy orthodontic wire may be heat treated to increase spring performance and efficiency. This study was designed to quantify the effects that several heat treatment temperatures have upon the ability of .016" x .022" type 1 chrome cobalt wire to resist permanent deformation. In addition, the changes in resistance to permanent deformation due to heat treatment at 900° F were studied in .018" stainless steel wire and chrome cobalt wire of all four tempers.
When compared to untreated wire, .016" x .022" type 1 chrome cobalt wire exhibited a maximum increase of approximately 174 percent in resistance to …
The Lasting Antimicrobial Qualities Of Three Root Canal Sealing Materials : Grossman's Sealer, Rickert's Sealer, And N2 Permanent, Lee R. Ingersoll
The Lasting Antimicrobial Qualities Of Three Root Canal Sealing Materials : Grossman's Sealer, Rickert's Sealer, And N2 Permanent, Lee R. Ingersoll
Loma Linda University Electronic Theses, Dissertations & Projects
An in vitro study using polyethylene tubes filled with Grossman's sealer, Rickert's sealer, and N2 permanent was conducted over a six month period in an effort to determine their lasting antimicrobial properties against eight different microorganisms.
From the study it was observed that N2 permanent possesses a long-lasting antimicrobial effect, but this effect appears to diminish greatly with time. Further investigation is needed to determine whether or not the effect is actually permanent in nature. The N2 permanent was also shown to have broader antimicrobial effectiveness against the eight microorganisms tested. N2 permanent produced zones of inhibition against five of …
Histologic Comparison Of Apical Tissue Response To Endodontic Overfills With Gutta Percha And Grossman's Sealer Vs. Sargenti Method (N₂), Donald L. Brewer
Histologic Comparison Of Apical Tissue Response To Endodontic Overfills With Gutta Percha And Grossman's Sealer Vs. Sargenti Method (N₂), Donald L. Brewer
Loma Linda University Electronic Theses, Dissertations & Projects
This study compared endodontic overfills of N2 and gutta percha-Grossman's Sealer from a histopathological basis. The study employed four male rhesus monkeys and a sample of 31 teeth.
The most obvious difference between the samples filled with N2 and the gutta percha-Grossman's Sealer samples was the recurring presence of ankylosis in the N2-treated teeth. Results also included bone necrosis, inflammation and root and bone resorption.
The N2 samples were considered to have evidenced greater violence of reaction apically.