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Biomedical subjects

W R Teteruck

Publications and source records attributed to W R Teteruck.

12 recordsLinked to original sources
PubMed1994

The effect of incisal bite force on condylar seating.

The purpose of this study was to investigate the relationship between different incisal biting forces and condylar seating. Bite force was measured with strain gauges at the incisors in 22 adult subjects. The subjects were positioned with mandibles in retruded centric and with an opening not exceeding the range of hinge axis movement. Condylar movement was measured using standard true hinge axis location procedures. Condylar position was measured with no force, then with bite forces of 4.5 kg, 7.5 kg and a comfortable maximum. Biting force significantly affected condylar movement (p < 0.001). As incisal bite forces increased, so did the amount of condylar seating to an average of 0.49 mm anteriorly and 0.27 mm superiorly using maximum biting force. Therefore, when taking a centric relation record, a technique involving an anterior stop and sufficient biting force should seat the condyles more fully.

Adult↗
PubMed1989

Surface quality of gypsums when poured against alginates.

Alginate impression materials are universally accepted for the fabrication of dental casts. Since casts reflect a direct link between the patient and the dentist, it is imperative that their surfaces be of highest quality. This study assesses the quality of dental cast surfaces when poured against alginate impression materials. A standardized system previously designed by the authors allowed the evaluations of 16 different gypsums poured against 32 different alginate surfaces, including a plexiglass control surface. Five hundred and twelve gypsum surfaces were produced and evaluated for quality in the following manner: 1) assessed visually with the aid of photomicrographs for surface smoothness; 2) evaluated by a modified Vickers scratch test for surface hardness. The results indicate that certain gypsum-alginate combinations provide superior surfaces with respect to hardness and smoothness, while other combinations suggest a high degree of incompatibility.

Alginates↗
PubMed1980

Interpretation and use of the dental admission and aptitude tests.

Despite the fact that all dental school applicants in Canada are required to take the Dental Aptitude Test (DAT) and their counterparts in the United States take the Dental Admission Test (DAT), there is an apparent lack of understanding in the translation and application of the information provided by the test. A review of the literature might assist admissions committee members in interpreting DAT results and in making more sound decisions in selecting students, To put the information into perspective, a brief overview of the history of the DAT, its composition, underlying concepts, and the problems of validation and guidelines for its use are presented.

Aptitude Tests↗