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Biomedical subjects

M Tagger

Publications and source records attributed to M Tagger.

At least 37 records · Page 2Linked to original sources

Effect of the endodontic status of the tooth on experimental periodontal reattachment in baboons: a preliminary investigation.

The effect of the endodontic status of the tooth on periodontal reattachment after the raising of a mucogingival flap was studied with the use of 48 teeth in four old baboons. Root canal therapy was performed on 26 front teeth. Tubliseal, AH26, N2, and Diaket were used as sealers with gutta-percha. The pulps of 5 teeth were exposed and left infected; 17 teeth with intact pulps served as a control. The teeth and their surrounding structures were studied histologically for reattachment with new cementum formation 2 to 17 days, 1 to 2 months, and up to 1 year after the operation. In the teeth examined 1 month postoperatively or more, if epithelium had not covered the denuded surface, new cementum was present, regardless of the endodontic status.

Animals↗

Subcutaneous reactions to implantation of tubes with AH26 and Grossman's sealer.

Twenty-seven polyethylene tubes filled with either U of P brand of Grossman's sealer or silver-free AH26 (Dentinol) were implanted in the backs of seven young guinea pigs. Tissue reactions were studied histologically after 2 months and graded for inflammation and thickness of capsule. The surface of AH26 that was slightly convex or flush with the opening of the tube had a significantly thinner capsule than U of P. The latter also caused more inflammation. The more severe subcutaneous tissue reaction to the zinc oxide--eugenol type of sealer was probably due to the instability of the material, which slowly disintegrated in contact with tissue moisture. This process continuously liberated new foreign particles and prevented resolution of inflammation.

Animals↗

Efficacy of apical seal of Engine Plugger condensed root canal fillings--leakage to dyes.

A new rotatory instrument, the Engine Plugger, that is claimed to be less fragile than the McSpadden Compactor, has been introduced since the recognition of thermomechanical compaction as a valid technique for root canal filling. The purpose of this study was to test the efficacy of the apical seal afforded by the Engine Plugger in comparison with that of an established technique, lateral condensation. Eighty roots with round canals prepared to size 45 were randomly divided into two groups: one compacted with the Engine Plugger (Group 1) and the other with the lateral condensation technique (Group 2). AH-26 sealer was used in half the specimens. Four additional roots served as controls. The roots were cleared following immersion in Procion brilliant green, and the maximal depth of penetration of the dye was measured with a stereomicroscope. Severe leakage occurred in both groups when sealer was not used (mean depth: 3.17 mm in Group 1; 4.3 mm in Group 2). Addition of sealer reduced leakage significantly (p less than 0.001). There was no statistically significant difference in the depth of penetration of the dye between the two groups when AH-26 was used, although a trend in favor of the Engine Plugger method (0.15 mm versus 0.425 mm for lateral condensation) was noted.

Coloring Agents↗