Matrix Retainers
7 products
About matrix retainers
A retainer is the holder a circumferential band is mounted in: the band is looped, slipped through a diagonal slot on the retainer and secured by turning the locking nut. The diameter of the loop is then adjusted around the sides of the tooth by turning the long adjusting knob. Every study in one systematic review found that combining a separation ring with a sectional matrix increased the tightness of the contact. A trial attributed the better contact of the ring to its stronger separating effect compared with the use of hand instruments.
Holds and tightens a band around the whole crown, instead of pressing one short section against a single surface. The sectional rings and the forceps that place them sit on this shelf too.
Sources: Assessment of anatomical contacts and contours of class II restorations using four different dental matrix systems, 2025 (J Conserv Dent Endod) · Alqarni et al. 2023, Evaluation of Matrix Systems on the Proximal Contact of Class II Composite Restorations: A Systematic Review (Cureus) · Alqahtani et al. 2025, The Effectiveness of Circumferential and Sectional Matrix Systems in Obtaining Optimum Proximal Contact in Class II Composite Restorations (Cureus)