The TwinRing is designed for use in sectional Class II matrix adaptation and can be used with any matrix. The unique design allows the TwinRing to adapt to a variety of tooth types and shapes. The geometry of the ring causes it to apply a strong, even tension that:

- assists in the separation of the teeth
- creates a strong seal with the matrix without collapsing the matrix into the cavity and doesn’t allow the composite to flow past the gingival margin which eliminates line angle overhangs.

The structural design of the TwinRing causes it to have excellent form memory; it is guaranteed to retain its original shape without warping, even after hundreds of uses.