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Biomedical subjects

L R Wilcox

Publications and source records attributed to L R Wilcox.

25 records · Page 2Linked to original sources
PubMed1989

Endodontic retreatment: ultrasonics and chloroform as the final step in reinstrumentation.

Forty extracted teeth were instrumented using a step-back flare technique and obturated with gutta-percha and either AH26 or Roth's 801 sealer. After 3 months the canals were retreated by removing gutta-percha and sealer with hot instruments followed by chloroform and files. As a final step, the teeth were instrumented using ultrasonics with either chloroform or with NaOCl. Most teeth were well cleaned. No significant differences were found between sealer groups or between the two irrigants as to the ability to remove gutta-percha/sealer.

Chloroform↗
PubMed1989

Coronal microleakage of permanent lingual access restorations in endodontically treated anterior teeth.

Forty-six intact extracted human anterior teeth were treated endodontically with laterally condensed gutta-percha and sealer. The teeth were restored with a base of either zinc phosphate or temporary stopping and a permanent restoration of either acid etched composite resin with GLUMA as the dentin bonding agent or with Ketac-Fil glass ionomer. The teeth were thermocycled, coated with nail varnish (except for the access), immersed in silver nitrate, developed, and sectioned longitudinally. The linear dye penetration was measured. All restorations permitted leakage into the base. All groups had specimens which leaked into the gutta-percha. There was a tendency for the glass ionomer/zinc phosphate group to leak least, but there were no statistically significant differences among the groups.

Acid Etching, Dental↗
PubMed1989

Case of mistaken identity: periapical cemental dysplasia in an endodontically treated tooth.

A case of a patient with a history of root canal treatment and re-treatment and a persistent periapical radiolucency is reviewed. Following surgery, biopsy material was submitted and diagnosed as periapical cemental dysplasia (PCD). With careful diagnosis, PCD should be readily differentiated from endodontic pathosis, thus avoiding unnecessary root canal treatment. In this case, surgery was necessary to rule out other inflammatory disease or benign odontogenic entities.

Adult↗