. Operative and dental anatomy technics; a class-room and laboratory manual for freshmen dental students . Fig. 105.—Perry separators. Fig. 106.—Elliot separator. Separation of the teeth is also accomphshed through theexpansive properties of such materials as wood, cotton,linen tape and gutta-percha (slow or previous separation). (d) Matrix.—A thin band or strip of steel, German silveror copper about inch in thickness, used to restore thefourth or missing wall in filling proximo-occlusal cavities,thus converting them into simple cavities. The simplestform of matrix is a thin strip of met
. Operative and dental anatomy technics; a class-room and laboratory manual for freshmen dental students . Fig. 105.—Perry separators. Fig. 106.—Elliot separator. Separation of the teeth is also accomphshed through theexpansive properties of such materials as wood, cotton,linen tape and gutta-percha (slow or previous separation). (d) Matrix.—A thin band or strip of steel, German silveror copper about inch in thickness, used to restore thefourth or missing wall in filling proximo-occlusal cavities,thus converting them into simple cavities. The simplestform of matrix is a thin strip of metal held in position by meansof a wooden wedge. The patent varieties of matrix are nu-merous, consisting of the matrix band and its retainer, and 78 INSTRUMENTS AND APPLIANCES range from those occupying one inter-proximal space to thosepartially or completely encircling one or two teeth. In some,provision is made for immediate separation of the teeth
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