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Weight: 200 Pieces of matrix strips.
A plastic matrix strip, also known as a celluloid strip or Mylar strip, is a transparent, thin strip of plastic used in dentistry, primarily for restorative procedures. It is designed to help shape and support the placement of composite resin or other restorative materials, especially in anterior (front) teeth restorations.
Uses of Plastic Matrix Strips:
1. Shaping Restorations:
Provides a smooth and natural contour to the composite filling.
Ensures proper anatomical shape and alignment of the tooth.
2. Isolation:
Prevents the restorative material from sticking to adjacent teeth.
Helps maintain a clean working area.
3. Light Curing:
Since the strip is transparent, it allows the curing light to pass through for effective polymerization of light-cured composite materials.
4. Gingival Protection:
Protects the gums from excess material or damage during restoration.
Procedure:
1. The matrix strip is placed around the tooth to be restored.
2. It is often secured using a wedge to keep it in position and to create a tight seal at the gingival margin.
3. The composite resin is applied and shaped against the matrix strip.
4. Once the material is cured and hardened, the strip is removed, leaving a smooth, properly contoured restoration.
Advantages:
- Ensures proper contact points and contours.
- Provides a clear view of the working area due to its transparency.
- Easy to use and cost-effective.
These strips are commonly used for Class III (interproximal cavities in anterior teeth) and Class IV (anterior teeth with incisal edge damage) restorations.
