Which item is used as a clear matrix in restorative dentistry?

Which item is used as a clear matrix in restorative dentistry?

• A. DG16 Endodontic probe
• B. Clear matrix
• C. Black
• D. Alginate

Answer: (B)

In restorative dentistry, shaping a direct resin restoration—especially on anterior teeth—needs a matrix to form the proper contour and contact with the adjacent tooth while the material is placed and cured. A clear matrix band is used for this purpose because it is transparent, allowing you to see your margins and the contact area, and it lets the curing light pass through to polymerize the composite. You wrap it around the tooth, secure it with a wedge to recreate the contact, apply the composite in increments, and cure through the matrix. The transparency is key for visual control and effective curing, which is why this item is the best choice for a clear matrix. The endodontic probe is for exploring and measuring root canals, not for forming a restorative matrix. Alginate is used for taking dental impressions, not for shaping or curing a direct restoration. The term “black” does not describe a tool used as a clear matrix.

In restorative dentistry, shaping a direct resin restoration—especially on anterior teeth—needs a matrix to form the proper contour and contact with the adjacent tooth while the material is placed and cured. A clear matrix band is used for this purpose because it is transparent, allowing you to see your margins and the contact area, and it lets the curing light pass through to polymerize the composite. You wrap it around the tooth, secure it with a wedge to recreate the contact, apply the composite in increments, and cure through the matrix. The transparency is key for visual control and effective curing, which is why this item is the best choice for a clear matrix.

The endodontic probe is for exploring and measuring root canals, not for forming a restorative matrix. Alginate is used for taking dental impressions, not for shaping or curing a direct restoration. The term “black” does not describe a tool used as a clear matrix.