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Results for “Root Canal Therapy”

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At least 19 recordsLinked to original sources
PubMed1978

Clinical and radiographic study of pulpectomy and root canal therapy.

A clinical and radiographic reexamination of 2,459 roots 2-7 years after initial pulpectomy or root canal therapy is presented. The overall success rate, which was 53%, was not affected by the sex or age of the patient, or by the jaw in which the tooth was situated. The tooth group, however, had a significant influence on the success rate, the worst results being obtained for incisors and especially the mandibular central and maxillary lateral incisors. The prognosis was clearly better for the pulpectomies than for the root canal therapy. Mortal pulpectomy was found to succeed more often than vital. The presence of a primary periapical rarefaction worsened the success rate. The success rate was lower for the teeth in which a posttreatment prosthetic crown had been fitted. Fillings which went beyond the apex had a significantly lower success rate than those which nearly or exactly reached the apex.

Adolescent↗
PubMed1977

Efficacy of ammoniacal silver nitrate in root canal therapy.

In order to find a simple and effective method for endodontic treatment of recalcitrant cases, the efficacy of ammoniacal silver nitrate was re-evaluated. The modified serial tube dilution method was conducted to determine the effective antimicrobial concentration of ammoniacal silver nitrate on selected test microorganisms and clinical isolates. The effective antimicrobial concentration for the most resistant microorganism, Streptococcus faecalis, was 5.0 X 10(-10) g/ml and the effectiveness persisted for several days. The diffusion ability of 4% ammoniacal silver nitrate into the dentinal tubules from root canal wall was also tested with freshly extracted teeth treated as in routine procedure for root canal therapy. The diffusibility was evident and the extent of infiltration was various, with more infiltration at cervical dentin than at apical one.

Ammonia↗