Measuring instruments particularly useful as dental implements

Details Measuring instruments particularly useful as dental implements Measuring instruments particularly useful as dental implements

1989-04-13

1990-12-25

Wilson, John J.

Dentistry

Apparatus

Having gauge or guide

33513, A61C 1904

Patent

active

049798987

ABSTRACT:
Two small portable measuring instruments, particularly useful as dental implements, comprises a housing, a stem displaceable within a bore in the housing, a fingerpiece coupled to one end of the stem and engageable by the user for displacing the stem, the opposite end of the stem being displaceable through an opening in the housing, an electrical measuring circuit for measuring the displacement of the stem, and a display for displaying the displacement of the stem. One embodiment, is described wherein the instrument is used as a dental probe for measuring the depth of a dental pocket, and a second embodiment is described wherein the instrument is used to measure the mobility of a tooth.

REFERENCES:
patent: 2787837 (1957-04-01), Gelfand
patent: 3058225 (1962-10-01), Ward
patent: 3559292 (1971-02-01), Weissman
patent: 4289382 (1981-09-01), Clark
patent: 4470810 (1984-09-01), Bourdeau et al.
patent: 4764114 (1988-08-01), Jeffcoat et al.
patent: 4765064 (1988-08-01), Maeda
patent: 4791940 (1988-12-01), Hirschfeld et al.
patent: 4841987 (1989-06-01), Brown et al.

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