Search PubMed⌕ Search

Biomedical subjects

W L Harvey

Publications and source records attributed to W L Harvey.

At least 19 recordsLinked to original sources
PubMed1992

A preliminary test of the replicability of a computerized occlusal analysis system.

A system for computerized occlusal analysis was tested in a laboratory. The investigation focused on the ability of the system to replicate results when sensors were used five times under a series of three levels of load that were applied to the occlusion. Also compared were the effects of zero mm immediate side shift and 0.2 mm immediate side shift on the research model. Results showed that there were both statistically significant differences (p less than or equal to 0.05 level) and nonsignificant differences scattered among the data derived from both articulator treatments.

Bite Force↗
PubMed1992

An update of a one-appointment master impression and jaw relation record technique.

Dentists may want to consider using an update of a unique complete denture technique that saves total chair time and, therefore, decreases cost. The technique combines appointments two and three, during which time the dentist both makes the master impressions and records the maxillomandibular relationships. In the past, protection of the maxillomandibular relationship records during the subsequent laboratory work was a problem. By applying new, tough, and thin denture base materials to the technique, the dentist will be less likely to distort the maxillomandibular records while boxing and pouring the impressions.

Dental Impression Materials↗
PubMed1991

Computerized occlusal analysis: an evaluation of the sensors.

Dentists traditionally depend on their experiences to evaluate occlusion. A computerized system, that enables an objective analysis of dental occlusion has been developed and is currently available. A key component of the system is the disposable sensor. This research tested the sensors' validity and reliability in detection of known interceptive occlusal contact and discovered that the sensors were valid when used just twice.

Analysis of Variance↗
PubMed1989

Dimensional changes at the posterior border of baseplates made from a visible light-activated composite resin.

Dimensional changes of 50 baseplates made of Triad visible light-cured resin were measured before and after curing, placement in water, and drying on the laboratory bench. Results showed that the resin shrinks but improves on storage in water. For persons sensitized to monomer, no free monomer is present in the material. Therefore, Triad resin offers an alternative to conventional self-curing resins often used to make baseplates.

Acrylic Resins↗
PubMed1989

Ten-year study of trends in removable prosthodontic service.

To gain an overview of where the field of removable prosthodontics may be heading, an ex post facto research project was completed that randomly sampled the charts of patients screened for removable prosthodontics during 1977-1979 and 1985-1987. The information showed that, overall, the number of complete dentures was declining whereas the number of removable partial dentures was increasing. The fastest growing prosthodontic service was the combination of the maxillary complete denture opposing the mandibular removable partial denture. Curriculum changes based on the results of the research were made.

Denture, Partial, Removable↗
PubMed1985

Dimensional change of acrylic resin tray materials.

Twelve commonly used acrylic resin tray materials were compared for linear curing shrinkage. Three of the 12 were found to expand slightly during the first few hours, which had the effect of reducing the net shrinkage. All trays, however, exhibited shrinkage during the 24-hour test period. Therefore, autopolymerizing acrylic resin tray materials should not be used for an impression the same day that they are made unless the tray is boiled as suggested by Pagniano et al. This agrees with research already completed even though the magnitude of shrinkage was considerably less than that reported in previous studies.

Acrylic Resins↗