Name the part of the Tofflemire/Matrix band retainer that tightens or loosens the matrix band at the end of the spindle.
A)Spindle
B)Guide slot
C)Inner knob
D)Outer knob
E)Diagonal slot

Question

Quizplus · Accepted Answer

The outer knob tightens or loosens the matrix ban in the retainer. The spindle holds the matrix band in the retainer. The guide slot functions to position the band to the right or left depending on the area of the mouth being restored. The inner knob adjusts the size or loop of the matrix band to fit around the tooth and loosens the band for removal. The diagonal slot positions the matrix on the spindle.

Name the Part of the Tofflemire/Matrix Band Retainer That Tightens