Dentistry – Apparatus – Having static product shaping surface
Patent
1994-05-02
1996-03-26
Lucchesi, Nicholas D.
Dentistry
Apparatus
Having static product shaping surface
A61C 512
Patent
active
055015956
ABSTRACT:
A matrix band for front teeth consists of a plastic band having two parts which extend away from each other as a preferably obtuse angle. In one embodiment, a transition area between the two parts is elastically extensible. In another embodiment, the transition area is plastically extensible. On each side of the transition area there is a substantially inextensible part. A matrix retainer for a matrix band has a tightening element which has a through channel dimensioned for continuous frictional engagement with two substantially inextensible portions of the matrix band which are movable face-to-face through the channel. The matrix retainer also has a locking element for fixation of the two inextensible portions relative to the tightening element.
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