Endodontics and Endodontology Commons^™

Bone Regeneration Over Submerged Dental Roots In Dogs, Roger Lee Plata

Loma Linda University Electronic Theses, Dissertations & Projects

Nonendodontically treated roots were submerged 1.5 to 2.0 mm. below the alveolar crest in three dogs. Twelve roots were treated in this manner. Regeneration of alveolar bone can be seen in three weeks with complete bone coverage in five weeks. A complete lamina dura can be seen around the amputated roots.

Bone failed to regenerate over two of the twelve roots. In one case there was delayed healing due to the early loss of some sutures. A sinus tract developed connecting the oral environment with the contents of the pulp. This led to bone resorption and a necrotic pulp. In …

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 …

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.

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 …