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Forty freshly extracted teeth with necrotic pulps were endodontically treated under simulated clinical conditions. Bacteriologic samples were obtained before during, immediately after, and 24 hours after instrumentation, irrigation, and medication either with 0.2 percent chlorhexidine gluconate or with sterile saline. There was a highly significant (p less(More)
The coauthors of this article had developed the clinical impression that whereas surgically placed amalgam fillings are successful on a short-term basis, the long-term prognosis for these cases may not be nearly as favorable. In order to test this hypothesis, as many patients as could be contacted, either directly or indirectly, who had been treated before(More)
The canal contents of thirty-three cariously and traumatically exposed pulpless teeth were sampled with a special technique and cultured anaerobically for growth in prereduced thioglycollate and for Bacteroides melaninogenicus on selective blood agar plates. The presence of B. melaninogenicus was compared with the presence or absence of eight symptoms(More)
Bovine pulp and dentin specimens were treated with either a 0.02 or 1.00 percent solution of chlorhexidine for either 20 or 40 minutes. Culture determination of the acquisition of antibacterial properties by the treated specimens immediately and 1 week after the treatment was evaluated using the test organism Streptococcus faecalis. It was concluded that(More)