Perforated Matrix Bands for Crab-Type Retainer (2 / 3 Hole)
Perforated steel matrix bands for a crab-shaped retainer; they temporarily reconstitute the missing proximal wall of a Class II cavity.
- Stock code
- 8690000001293
We do not publish prices; they depend on size and quantity.
Description
A matrix band is the thin steel strip that temporarily takes the place of the missing proximal wall when a Class II cavity is restored in a posterior tooth. Perforated bands of this type are threaded onto a crab-shaped (Ivory type) matrix retainer through their holes, and the retainer is tightened to draw the band around the tooth. The band does more than hold the restorative material in the cavity: it also defines the contour of the proximal surface that will contact the neighbouring tooth, so how well it follows the tooth's contour directly affects the quality of the finished contact. The band must be supported at the cervical margin with an interdental wedge; without one, restorative material extends gingivally and forms an overhang. The product is supplied in two-hole and three-hole options, and which one suits depends on the geometry of the retainer in use. Bands are single use — one that has been deformed or creased during tightening should be discarded.
Specifications
| Product type | Perforated metal matrix band for a crab-type retainer |
|---|---|
| Perforation options | Two-hole or three-hole |
| Material | Thin stainless steel strip |
| Retainer | Fits a crab-shaped (Ivory type) matrix retainer |
| Function | Temporarily reconstitutes the missing proximal wall of a Class II cavity |
| Applications | Class II amalgam and composite restorations |
| Companion item | Used with an interdental wedge for cervical adaptation |
| Use | Single use; a deformed band should not be reused |
| Two vs three holes | Match different retainer geometries for single- and double-surface cavities |
Similar products in this category
View all →
