Introducing the Markson SureTact® G3 Sectional Matrix System: A Complete Clinical Guide for Predictable Class II Restorations (2026)

Class II composite restorations remain one of the most frequently performed—and most technically demanding—procedures in restorative dentistry. Despite advances in adhesive systems and composite materials, clinicians continue to struggle with one persistent challenge: creating tight, anatomically correct proximal contacts while preserving natural tooth form.

The Markson SureTact® G3 Sectional Matrix System was developed to address these exact problems by combining nickel-titanium (NiTi) separation rings, anatomically contoured MirrorCoat™ matrix bands, self-guiding wedges, and the WedgeShield® pre-separation concept.

Why Class II Contact Creation Is So Challenging

Creating predictable proximal contacts in Class II restorations is challenging because posterior tooth anatomy is inherently convex and dynamic. Teeth are not rigid structures—each tooth exhibits physiologic mobility within the periodontal ligament, which rebounds once wedges and matrices are removed.

Traditional circumferential matrix systems were never designed to reproduce natural posterior anatomy. Their flat bands and reliance on wedging alone often result in:

• Flat or weak proximal contacts
• Open contacts after matrix removal
• Gingival gaps and overhangs
• Excessive finishing and polishing time

What Makes Sectional Matrix Systems More Predictable

Sectional matrix systems were developed to overcome the limitations of circumferential matrices by addressing contact formation before composite placement. Instead of forcing anatomy after curing, sectional systems shape the restoration during placement.

Key principles behind predictable sectional matrix systems include:

• Anatomically contoured matrix bands
• Active tooth separation using NiTi rings
• Controlled gingival sealing
• Stabilized matrix positioning throughout the procedure

Overview of the Markson SureTact® G3 System

The SureTact® G3 system is a comprehensive sectional matrix solution engineered specifically for Class II composite restorations, including deep proximal boxes and missing cusp scenarios.

• ELAMAX nickel-titanium universal rings for consistent, durable separation
• MirrorCoat™ anatomically contoured matrices available in four occlusogingival heights
• Self-guiding wedges that compress on entry and flare on exit
• WedgeShield® for early separation and adjacent tooth protection

The Science Behind NiTi Ring Separation

Nickel-titanium (NiTi) alloys are uniquely suited for sectional matrix rings due to their superelastic properties and shape memory. Unlike stainless steel, NiTi rings can deliver consistent separation forces while returning to their original shape after repeated use.

• Active separation that compensates for periodontal rebound
• Stable force distribution across the contact area
• Improved marginal ridge height and contour
• Compatibility with wedge placement without displacement

MirrorCoat™ Anatomically Contoured Matrix Bands

MirrorCoat™ matrices are ultra-thin stainless steel bands engineered with increased curvature to wrap naturally around posterior teeth. This curvature helps recreate natural proximal anatomy instead of forcing a flat contour.

WedgeShield®: Why Pre-Separation Matters

WedgeShield® is placed before preparation, initiating separation early in the workflow. This allows the periodontal ligament to begin yielding before ring placement, improving the effectiveness of final separation.

• Protection of adjacent teeth from bur damage
• Cleaner proximal surfaces for matrix adaptation
• Improved contact predictability

Four-Step Clinical Workflow for Predictable Results

Common Class II Failures—and How SureTact® G3 Addresses Them

• Open contacts: Active NiTi separation compensates for rebound
• Flat marginal ridges: Anatomical matrix curvature pre-forms anatomy
• Gingival gaps: Self-guiding wedges improve cervical seal
• Excess finishing: Pre-contoured matrices reduce flash

Recommended Matrix System for Predictable Class II Restorations

For clinicians seeking a predictable, repeatable solution to common Class II challenges, the Markson SureTact® G3 Sectional Matrix System offers a workflow designed to address the root causes of contact failure.

By integrating early pre-separation, active NiTi ring separation, anatomically contoured matrices, and stable wedge support, SureTact® G3 allows clinicians to establish anatomy before composite placement—reducing technique sensitivity and improving consistency across cases.

You can explore the complete Matrix System collection to see how this workflow fits into a modern restorative practice.

Frequently Asked Questions

Is SureTact® G3 suitable for deep Class II restorations?

Yes. The system is designed for deep boxes and missing cusp scenarios where traditional matrices struggle to maintain contact form.

Can SureTact® G3 be used for multiple adjacent restorations?

Yes. The universal rings are stackable, allowing efficient restoration of multiple Class II lesions in the same quadrant.

How does this compare to Tofflemire systems?

Circumferential systems remain useful in select situations, but sectional matrix systems like SureTact® G3 offer superior contact predictability and reduced finishing for composite restorations.

Conclusion: Designed for Predictability

The Markson SureTact® G3 Sectional Matrix System represents a modern, evidence-driven approach to Class II restorations. By addressing the biomechanical and anatomical challenges that cause contact failure, SureTact® G3 helps clinicians achieve consistent, high-quality results with greater efficiency.