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Biomedical subjects

S L Mattingly

Publications and source records attributed to S L Mattingly.

6 recordsLinked to original sources

The use of radiographs in small cast-gold restorations.

The rationale for the use of treatment radiographs in the construction of cast-gold restorations has been presented. Radiographs are made in the University of Louisville Fixed Prosthodontics Clinic at the precementation and postcementation stage of treatment when casting margins are inaccessible. Radiographs at this stage of treatment permit detection and correction of a variety of problems that may not be discovered clinically and allow the construction of excellent cast-gold restorations that would be impossible otherwise. Because all radiation safety factors are observed, the amount of radiation a patient receives is minimized.

Cementation↗

Evaluation of two methods for assessing marginal leakage.

This in vitro study demonstrated a significant difference in the microleakage of Class V preparations which had been etched, treated with a bonding agent, and restored with composite resin. This difference is dependent upon whether the specimen was thermocycled or immersed in a constant temperature dye bath. Therefore, it would seem reasonable that, to more accurately correlate laboratory findings with clinical performance, in vitro experimentation should simulate oral conditions as closely as possible. For testing microleakage, thermocycling as described in this study is superior to static temperature studies.

Coloring Agents↗

The dental educator and the law.

Dental educators become vulnerable to student lawsuits if they ignore legislative changes and judicial decisions that affect all academic units in higher education. Issues involving contractual considerations, privacy and grading, and recent copyright revisions are of particular interest to those faculty actively engaged in teaching. Knowledge of these issues as they relate to the course director's daily responsibilities will better prepare the dental educator to avoid litigation and to know when to seek advice of institutional counsel.

Clinical Competence↗

Microleakage and the class V composite cavosurface.

The following conclusions may be made from this study: Substantial leakage occurs around unetched composite restorations. No procedure employed in this study consistently eliminated all leakage. Etching the peripheral enamel decreased penetration of the dye. The use of an intermediary bonding resin did not enhance marginal sealing over that obtained when only the etchant was used. The gingival margin was less resistant to penetration of the dye than the occlusal margin. Beveling the cavosurface margin produced a significant decrease in leakage, when employed with acid etching in Group II.

Acid Etching, Dental↗