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What Is the Function of the Inner Knob of a Tofflemire

Question 18

Multiple Choice

What is the function of the inner knob of a Tofflemire band retainer?


A) It adjusts size or loop of matrix band to fit around tooth.
B) It slides up and down on spindle to secure band in place.
C) It tightens or loosens matrix band in the retainer.
D) It holds the matrix band in the retainer.

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