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MISCELLANEOUS INSTRUMENTS
79
of a wooden wedge. The patent varieties of matrix are nu-
merous, consisting of the matrix hand and its retainer ^ and
range from those occupying one inter-proximal space to those
Fig. io6.—Ivory matrix retainer No. i and matrix bands.
Fig. 107.—Ivory matrix retainer No. 8 with bands.
partially or completely encircling one or two teeth. In some,
provision is made for immediate separation of the teeth
during their application. The Ivory , Brophy, Woodward and
Crenshaw are prominent forms (Figs. io6 and 107).
79
of a wooden wedge. The patent varieties of matrix are nu-
merous, consisting of the matrix hand and its retainer ^ and
range from those occupying one inter-proximal space to those
Fig. io6.—Ivory matrix retainer No. i and matrix bands.
Fig. 107.—Ivory matrix retainer No. 8 with bands.
partially or completely encircling one or two teeth. In some,
provision is made for immediate separation of the teeth
during their application. The Ivory , Brophy, Woodward and
Crenshaw are prominent forms (Figs. io6 and 107).
