Biomedical subjects

J E Haddix

Publications and source records attributed to J E Haddix.

8 recordsLinked to original sources

PubMed1994

A modified sectional cone obturation technique.

This investigation quantitatively analyzed the apical seal in teeth in which one of three gutta-percha root canal-obturating techniques was used. The seal obtained with each technique was measured with dye penetration and spectrophotometric analysis. No statistically significant difference was found among the lateral condensation, sectional cone, and modified sectional cone techniques in their ability to produce an apical seal.

Analysis of Variance↗

PubMed1991

An in vitro investigation of the apical seal produced by a new thermoplasticized gutta-percha obturation technique.

This investigation quantitatively analyzed apical leakage in teeth in which one of two new thermoplasticized gutta-percha obturating techniques were used. Apical leakage observed after use of the thermoplasticized techniques was compared to leakage found in teeth that had been obturated with conventional lateral condensation. Statistically significant differences (P less than 0.05) were found among the three groups. The lateral condensation group exhibited the least leakage, followed by the thermoplasticized group, and the thermoplasticized twist-off group exhibited the most apical leakage.

Cuspid↗

PubMed1990

Post preparation techniques and their effect on the apical seal.

It is accepted clinical procedure to extend post preparations to such a depth that 3 mm to 5 mm of gutta-percha remains at the apex of the tooth. Clinicians use numerous techniques to achieve this goal. This investigation quantitatively analyzed the effect of the method of gutta-percha removal on the apical seal and evaluated apical leakage in teeth with different levels of remaining gutta-percha. The methods evaluated included the GPX instrument, heated pluggers, and Gates-Glidden drills. Groups of 25 extracted teeth were prepared with each of the three methods leaving 3 mm or 5 mm of gutta-percha remaining apically. Spectrophotometry (optical density) was used to assess apical leakage. Significantly less leakage was observed with the heated plugger technique at the 3 mm and 5 mm levels when compared to the 3 mm and 5 mm levels in both the GPX and Gates-Glidden groups.

Analysis of Variance↗

PubMed1989