A. The diagonal slotted surface of the Tofflemire retainer is always positioned toward the gingiva or the occlusal?

B. The Tofflemire retainer is positioned from what surface (name) of the tooth?

C. Should the handle of the Tofflemire retainer extend inward into the mouth (in the direction of your throat), or out from the oral cavity at the corner of your lips?

D. What is the purpose of the wedge and from what materials or substances can a wedge be made from?​