Injection moulding is a restorative technique used to accurately shape and place composite resin into a prepared mould.

Injection moulding in composite dentistry is a minimally invasive restorative technique used to accurately shape and place composite resin into a prepared mould or index. A clear silicone or vacuum-formed matrix is first created from a diagnostic wax-up or digital design that reflects the ideal tooth shape. Flowable or heated composite resin is then injected into the mould, which is positioned over the teeth, allowing the material to adapt precisely to the desired contours before light curing.

This technique is commonly used for additive procedures such as composite veneers, diastema closure, edge bonding, and full smile rehabilitations.

Overall, injection moulding offers a controlled, conservative, and highly aesthetic approach to composite restorations in a minimally invasive and accurate way