Matrix Band Holder (Tofflemire Retainer)

A Matrix Band Holder, also known as a Tofflemire Retainer, is a dental instrument used to secure a matrix band around a tooth during the placement of restorative materials such as amalgam or composite. It helps recreate the natural contour and contact of the tooth while preventing overhangs and ensuring proper adaptation of the filling.

Components:

1. Head: Holds the matrix band securely; may be straight or contra-angled.

2. Locking Vise: Tightens and locks the matrix band in place.

3. Long Knob (Adjusting Screw): Expands or contracts the loop size of the band to fit around the tooth.

4. Short Knob (Locking Nut): Locks the band firmly to prevent slipping during restoration.