The Lingual Matrix Technique

From the one-shade to the more complex Class IV requiring layering of opacities, the simple fabrication of a lingual matrix can greatly simplify your technique while minimizing finishing time. The lingual matrix establishes optimal incisal length and lingual contour, enabling more accurate placement of
subsequent layers. This accuracy translates into procedural efficiency and a more predictable restorative outcome.

This fast and simple step of creating a lingual matrix with Template Matrix Material makes the complicated layered placement of a Class IV composite easier, more predictable and efficient.

Using the existing restoration, or, if necessary, mock-up a restoration using some unwanted to seldom-used composite, keeping in mind that only the incisal edge and lingual contour and contacts need to be accurately established. Once the mockup is cured, apply a thick layer of Template Matrix Material (Clinician’s Choice) to the lingual of all six anterior teeth, ensuring that the material doesn’t extend beyond the facio-incisal line angle (Step 1).

Step1. Dispense Template Matrix Material onto lingual of all six anterior teeth capturing the full lingual surface and incisal edge.

After 30-45 seconds, the Template lingual matrix is set and can be removed. The mockup is broken away, the matrix is replaced, and a line corresponding to the fracture is scribed onto its inner surface. A very thin, uniform layer of Evanesce Enamel FX White composite is placed up to the scribed line (Step 2). The matrix is placed back onto the teeth and this lingual layer is attached to the etched and bonded tooth and light cured (Step 3).

Step 2. Scribe a line on the matrix using an explorer to mimic the fracture line. Place an ultra thin layer of Evanesce Enamel FX White as shown. 

Step 3. With the Template matrix in place, remove any excess material. Light cure facial 10 seconds, remove matrix and light cure lingual 10 seconds.

Controlled placement of subsequent layers of Evanesce can now be carried out without the lingual matrix in place (Step 4). This fast and simple step of creating a lingual matrix with Template Matrix Material makes the complicated layered placement of a Class IV composite easier, more predictable and efficient (Step 5).

Step 4. Remove Template matrix; if any excess composite is beyond incisal edge, remove with coarse disk.

Final result.

Join the Hands-OnLine LIVE course, Mastering the Class IV Restoration (live or on-demand), and complete this technique under the live direction of Dr. Robert Margeas.