Dentistry – Apparatus – Hand manipulatable implement
Reexamination Certificate
2000-09-18
2001-05-15
Lewis, Ralph A. (Department: 3732)
Dentistry
Apparatus
Hand manipulatable implement
C433S039000
Reexamination Certificate
active
06231341
ABSTRACT:
BRIEF SUMMARY OF THE INVENTION
This invention relates to dental tools and particularly to a matrix band holder and tensioner that is used from a position on the lingual side of the teeth.
The matrix tensioners have been used by dentists for many years for encircling and tightening a very thin metal matrix band around teeth in preparation for tooth filling procedures. These matrix tensioners are small devices that rests of the labial side of the teeth and which clamp the ends of a matrix band to form a loop which may be tightened to form a metal retainer around a tooth so that the dentist can compress filling material into the tooth.
Heretofore, matrix tensioners have been applied on and labial side of the tooth between the gums and the lips so that, when working with the rear molars, the dentist's working space was restricted and the patient suffered discomfort. The matrix tensioner to be described is designed for retaining on the lingual side of the teeth, thus providing the dentist with ample working space and causing less discomfort for the patient.
Briefly described the lingual matrix tensioner includes two parallel, spaced posts, each less than one centimeter in diameter and about two centimeters in length. Both ends of a metal matrix band are clamped to one of the posts and the doubled matrix passes through various slots in the lower third of each post so that a matrix loop is produced at various locations at the other post. The spacing between the two posts is adjusted by a rotatable rod which is anchored to one post and threaded through the other so that rotation of the rod causes separation of two posts and a reduction in the size of the matrix loop.
REFERENCES:
patent: 698280 (1902-04-01), Hinker
patent: 2367439 (1945-01-01), Samphere
patent: 2502903 (1950-04-01), Tofflemire
patent: 2611182 (1952-09-01), Tofflemire
patent: 2687573 (1954-08-01), Stone
patent: 2709302 (1955-05-01), Reiter
patent: 3020638 (1962-02-01), Tofflemire
patent: 5722831 (1998-03-01), Lin
Castle Linval B.
Lewis Ralph A.
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