Being the Matrix Company, one of the most frequent questions we get is “which matrix do I use where?”  While personal preference will drive much of the decision process, below is a chart that can provide a good starting point.
Procedure Recommended Materials

Distal of canine, short or malpositioned

Composi-Tight 3D Fusion Sectional Matrix Kit

BEST - IMPROVED! Most popular choice; Superior contacts with minimal flash.

Reel Matrix

BETTER - Tofflemire-style with contoured matrix; Easy to apply; Cure through option available.

Pinch Matrices

GOOD - Built-in tensioning device; Requires buccal and lingual wedges to allow placement past contact points.

Slick Bands Tofflemire Non-Stick Matrices

GOOD - Traditional Tofflemire-style with a new non-stick coating for easy removal.

Conservative Class II
Composi-Tight 3D Fusion Sectional Matrix Kit

BEST - IMPROVED! Most popular choice; Superior contacts with minimal flash.

Reel Matrix

BETTER - Tofflemire-style with contoured matrix; Easy to apply; Cure through option available.

Pinch Matrices

GOOD - Built-in tensioning device; Requires buccal and lingual wedges to allow placement past contact points.

Slick Bands Tofflemire Non-Stick Matrices

GOOD - Traditional Tofflemire with a new non-stick coating for easier removal.

Slightly Wide and/or Deep
Composi-Tight 3D Fusion Sectional Matrix Kit

BEST - IMPROVED! Great choice even if the preparation is wide; Use Wide Prep ring with subgingival matrix bands.

Reel Matrix

BETTER - Handles wider preparations that aren’t too deep; Use with 3D/3D XR ring for improved results.

Pinch Matrices

GOOD - Handles wider preparations that aren’t too deep; Use with 3D/3D XR ring for improved results.

Slick Bands Tofflemire Non-Stick Matrices

GOOD - #2 Subgingival bands handle both very wide and very deep restorations.

Large Class II
Composi-Tight 3D Fusion Sectional Matrix Kit

BEST - IMPROVED! Great choice even if the preparation is wide; Use Wide Prep ring with subgingival matrix bands.

Reel Matrix

BETTER - Use clear version to improve visualization of overall restoration.

Pinch Matrices

BETTER - Use Blue View version to improve visulization of overall restoration.

Slick Bands Tofflemire Non-Stick Matrices

GOOD - Use Right-Curve matrix to improve anatomy of extremely wide preps.

Small to medium size
VariStrip Contour Anterior Matrices

BEST - Pre-contoured in three dimensions AND tapered to provide the band height and contour.

Large Class III or Class IV
VariStrip Contour Anterior Matrices

BEST - Pre-contoured in three dimensions AND tapered to provide the band height and contour.

Class V
Blue View Cervical Matrix

BEST - Contours and directly compresses resin while eliminating air-inhibited layer.

Crown build-ups, post and core
Reel Matrix

BEST - Best choice if you want a cure-through matrix for a core build-up.

Pinch Matrices

BETTER - Very fast; May not provide as tight a cervical seal as other matrices.

Slick Bands Tofflemire Non-Stick Matrices

GOOD - A popular choice; Use Right-Curve gray (regular) matrix for the tightest possible cervical seal.