Garrison Dental Solutions: Cervical Matrix System Overview
The Garrison Dental Solutions Cervical Matrix System is designed specifically for Class 5 restorations.
This system provides clinicians with a streamlined method for contouring composite material, ensuring a smooth finish and reducing the need for extensive post-operative polishing.
Matrix Design and Anatomy
The matrix is a transparent, anatomically shaped component featuring a specialized thickness gradient to optimize restoration results:
- Thin Edges: The peripheral edges of the matrix are designed to be flexible.
When pressed against the tooth, they flex to create a tight seal, effectively containing the composite.
- Reinforced Center: The middle of the matrix is thicker than the edges.
This rigidity prevents the matrix from being pushed into the restoration, ensuring the composite does not develop a concave “dent” during placement.
- Integrated Post: Each matrix features a small post that allows for secure attachment to the system’s specialized handle.
Handle Versatility and Positioning
The system includes a dual-ended handle designed to provide ergonomic access to various areas of the mouth. The matrix post can be inserted into the handle in multiple configurations:
| Attachment Point | Orientation | Recommended Use Case |
|---|---|---|
| Straight End | Direct/Straight-on | Ideal for anterior Class 5 restorations where a direct press is possible. |
| Angled End | Multi-directional | Allows the matrix to be flipped in either direction to reach posterior teeth or to keep the clinician’s hand out of the line of sight. |
Clinical Application Technique
To achieve the best results with the cervical matrix, the following technique is recommended:
- Preparation: Prepare the site using standard etching and bonding protocols.
- Gingival Sealing: Attach the matrix to the handle and press the gingival edge of the band firmly against the tooth.
If necessary, the thin edge can be slid slightly subgingivally to ensure a complete seal. 3. Composite Injection: While holding the matrix in position, the composite is injected into the cavity.
- The “Roll” Motion: Once the composite is placed, roll the matrix upward toward the incisal edge.
This motion squeezes any excess material (flash) toward the incisal area, where it is easily accessible for cleanup. 5. Light Curing: The matrix is transparent with a slight blue tint that does not interfere with curing light performance.
The restoration can be cured directly through the matrix.
Key Benefits
- Surface Quality: The matrix imparts a highly smooth surface finish to the composite upon removal.
- Elimination of Air-Inhibited Layer: By sealing the composite away from oxygen during the cure, the matrix eliminates the sticky air-inhibited layer.
- Reduced Finishing Time: Because the matrix manages the gingival margin effectively, there is typically no subgingival flash to clean up, leaving only minor polishing required at the incisal edge.