Description
Matrix Retainer No. 1
Dental instrument
This matrix consist of a stainless steel band which encircles one proximal surface of a posterior tooth. This is attach to the retainer via a wedge shaped projection. An adjusting screw at the end of the retainer adapts the band of the proximal contour of the prepared tooth. As the adjusting screw is rotated clockwise the wedge shaped projection engage the tooth at the embrasures of the unprepared proximal surfaced.
Advantage
Economical
Can be sterilized
Disadvantage
Difficult to apply and remove
| Surname | Â Matrix Retainer |
| Size / Model / Figure | No.1 |
| curvature | Straight |
| Finishing | Mirror Polish Finishing |
| Instrument Type | Dental Matrix Retainer |
| Material | Stainless Steel |
| Disposable or Reusable | Reusable |
| Rusting Prevention | Passivation Processed |
| Cleaning | Ultrasonic Cleaned |
| Sterile or Non-Sterile | Non-Sterile |
| Latex or Latex-Free | Latex-Free |
| Test Performed | Boil, Shape & Performance Test |
| Grade | Premium OR-Grade |
| Packing | Individually Packed in SMS Brand printed Poly-sleeve |
Matrix Retainer
A Dental Matrix Retainer is mechanical used to secure the ends of a matrix band around a tooth. The band provides a substitute wall where a part of the tooth is missing and helps to compact a restoration into a prepared tooth cavity after the carious lesion has been removed. Usually by engaging the ends of the matrix band and drawing the band tight. When a restoration involves an interproximal surface, it is not possible to achieve a properly adapted restoration without a matrix band. A matrix band creates a temporary interproximal surface, and, when appropriate, a matrix retainer secures the matrix band in place.
Function of matrix
- To confine restorative material while it is hardening.
- To established optimal contacts and contours for the restoration.
- To prevent gingival overhangs off restoration.
- To provide acceptable surface texture for restoration.
