Marvin M. Stark - Los Altos Hills CA Kenneth B. Soelberg - Menlo Park CA Roger B. Pelzner - San Mateo CA Mark S. Bogdan - Menlo Park CA
Assignee:
Marvin M. Stark Research Foundation - Santa Clara CA
International Classification:
B21J 5128
US Classification:
72 53
Abstract:
An apparatus for treating the surface of a dental inlay for a tooth has a cup enclosure with a restricted opening therein. A hollow stem is slidably received in the cup and releasably held in a chosen position. An inlay holder is at the end of the stem within the cup enclosure and in the path of a stream of grit particles projected from the reservoir through a nozzle extending through the opening into proximity with the inlay holder.
Marvin M. Stark - Los Altos Hills CA Kenneth B. Soelberg - Menlo Park CA Roger B. Pelzner - San Mateo CA
Assignee:
Marvin M. Stark Research Foundation - San Jose CA
International Classification:
A61C 300
US Classification:
433141
Abstract:
A dental handpiece especially for transmitting intense light for use in polymerizing dental materials in situ has a readily removable opaque shield of deformable material affixed to the end thereof to preclude the light from spreading and to prevent inadvertent contact of the handpiece tip with the subjacent area.
Marvin M. Stark - Los Altos Hills CA Kenneth B. Soelberg - Menlo Park CA Roger B. Pelzner - San Mateo CA
Assignee:
Marvin M. Stark Research Corporation - Santa Clara CA
International Classification:
A61C 1704
US Classification:
433 91
Abstract:
For use in reducing atmospheric contamination by mercury vapor from an amalgam container, there is provided a rigid tube hooked over the rim of the container and open to the interior thereof. The duct is connected through a filter for taking out the noxious material to a vacuum source.
Method And Apparatus For Measuring The Sensitivity Of Teeth
Marvin M. Stark - Los Altos Hills CA Jack B. Rosenfeld - San Francisco CA Roger B. Pelzner - San Mateo CA Kenneth B. Soelberg - Menlo Park CA
Assignee:
The Regents of the University of California - Berkeley CA
International Classification:
A61B 505
US Classification:
128741
Abstract:
A dental apparatus for measuring the sensitivity of teeth. The apparatus includes an electrode probe for contacting a tooth and an electrical lead for forming a complete circuit with the probe through the tooth. Electrical energy is applied to the tooth in varying amounts; the apparatus measures and records the quantitative magnitude of a parameter proportional to the effective electrical energy applied to the tooth.