Biomedical subjects

I J Soares

Publications and source records attributed to I J Soares.

8 recordsLinked to original sources

PubMed1994

In vitro evaluation of an audiometric device in locating the apical foramen of teeth.

A new audiometric device to determine the location of the apical foramen of teeth undergoing endodontic treatment according to "the relative value method" was tested in in vitro experiments. In 96.5% of the 350 human teeth used in the experiment, the location of the apical foramen was determined within acceptable limits (0-0.5 mm). In 60 teeth, where the measurements were based on an intermittent audio signal, a point about 1 mm short of the apical foramen was located. The results were considered promising and a clinical evaluation of the device will be carried out.

Auscultation↗

PubMed1994

Reaction of rat subcutaneous tissue to implants of gutta-percha for endodontic use.

The present work studied the reaction caused in the connective tissue of rats by implantation of two brands of gutta-percha cones, and thermoplasticized gutta-percha cylinders. Thirty-six rats were used, in groups of 12, for periods of 15, 30, and 60 days. Each animal received one test implant of each material, and one implant of Teflon as control. The cylinders, and one of the brands of gutta-percha cones, were well tolerated by the connective tissue. The cones of the other brand elicited different reactions, of which the possible causes are herein discussed.

Animals↗

PubMed1992

Influence of irrigation and intracanal dressing on the healing process of dogs' teeth with apical periodontitis.

Dogs' teeth with apical periodontitis were treated endodontically, Dakin's solution being used in an experimental group as the irrigation solution, and camphorated paramonochlorophenol as an intracanal dressing. For a second group of teeth, the irrigation solution used was physiologic saline, dry cotton only being placed into the pulpal chamber to take the place of an intracanal dressing. In a second visit, overinstrumentation and a new application of the same kind of dressing were performed, the root canals being then filled with gutta-percha cones and zinc oxide-eugenol cement. Other specimens were treated, in one visit, where physiologic saline or Dakin's solution were the irrigation solutions. The animals were sacrificed 6 months after the obturation of the root canals. Histologic exams showed better results for the experimental group where Dakin's solution and camphorated paramonochlorophenol had been used, with signs of repair characterized by newly formed cementum and bone tissue, as well as a marked reduction in size of the periapical lesions. No differences were seen in the results with physiologic saline or Dakin's solution as irrigants.

Animals↗

PubMed1986