JDF 355 Straight Matrix Band Retainer
Straight-bodied (Tofflemire type) retainer that holds the matrix band for Class II restorations; nut adjustment, stainless steel, autoclavable.
- Product code
- JDF 355
- Stock code
- 8690000020003
We do not publish prices; they depend on size and quantity.
Description
A straight matrix retainer is the body that keeps a matrix band tensioned around the tooth during Class II amalgam and composite restorations. Its knurled nut mechanism reduces the diameter of the band loop, adapting the band to the tooth and locking it there so it cannot shift during condensation or layering. Because the band replaces the lost proximal wall and therefore determines the contour of the restoration and its contact with the neighbouring tooth, band tension and position bear directly on the quality of the filling. The straight body makes the instrument easier to seat in posterior sites and in patients with limited mouth opening. The band should always be supported with an interdental wedge, which seals the cervical margin and prevents overhangs. Debris in the adjusting nut and its housing seizes the mechanism, so the instrument needs regular cleaning. The stainless steel body is suited to steam sterilisation.
Specifications
| Instrument type | Straight-bodied matrix band retainer (Tofflemire type) |
|---|---|
| Material | Stainless steel |
| Compatible bands | Metal matrix bands matching the retainer |
| Intended use | Securing the matrix band in Class II amalgam and composite restorations |
| Working principle | A knurled nut mechanism reduces the band loop diameter and locks it in position |
| Body shape | Straight body — easier to position in posterior sites and with limited mouth opening |
| Used with | An interdental wedge for cervical adaptation and seal |
| Sterilisation | Autoclavable |
| Maintenance | Keep the adjusting nut and its housing clean; a seized mechanism spoils band tension |
Similar products in this category
View all →
