Tools Team Up to Enhance Separation in Restorations



Separation is key to successful restorations. Bioclear Matrix’s Twin Ring and Diamond Wedge are designed to complement each other to provide the separation that dentists need for effective treatment.

The Twin Ring comes in molar and premolar models. It can be used with any matrix in sectional Class II matrix adaptations. And thanks to its twin Nitinol wires, as dentists spread it open, squeezing the forceps becomes easier.

“We wanted to create a ring that would separate the teeth efficiently but without a lot of hand fatigue,” said Jeremy Henderson, director of business development and marketing at Bioclear Matrix. “The wire allows you to open it very easily, but it still has a high return force.”

The Twin Ring’s NiTi Nitinol material and structural design also enable its form memory. According to Bioclear, each Twin Ring will retain its original shape without warping even after hundreds of uses.

“If you were to take one and stretch it all the way open, it would come right back with no problem,” Henderson said.

Despite the stretching, the Twin Ring is durable, too. The Nitinol gives it a higher yield so it can take more bending without getting permanently deformed. Plus, its circular design distributes stresses evenly along the wire instead of concentrating them at specific points.

“We’ve opened it over a thousand times and it still had strong separating power,” Henderson said.

Also, the hands on the Twin Ring pivot independently of each other so it can adapt and adhere to a variety of tooth sizes and shapes. The angle of its spring eliminates interference when clamps are used.

Furthermore, the Twin Ring was shaped to create a strong seal with the matrix and prevent composite from flowing past the gingival margin, eliminating line angle overhangs. Its lubricious material ensures easy cleaning, too.

“It’s naturally lubricating,” said Henderson. “If you were to get composite on one, it would just flake right off. It tends to stay cleaner.”

While the Twin Ring is doing its work, the Diamond Wedge supports separation as well. The diamond-shaped cutout in its tip collapses and then reopens on the other side of the embrasure for easier insertion and greater stability during use. Its flexible design also creates a complete marginal seal to eliminate the uncontrolled flow of excess composites and minimize cleanup.

“The Diamond Wedge has these little fingers on its side that move out of the way when the Twin Ring goes on,” said Henderson. “So it continues the sealing on the matrix without distorting it.”

The Diamond Wedge comes in 5 models, from small to extra large, with a model designed for deep caries that includes an additional slot in its tip to improve insertion. Each model includes a robust grip, so dentists can use cotton pliers with them.

“You place the Bioclear Matrix and then the Diamond Wedge,” said Henderson. “And then after that, you would place the Twin Ring over the top of the matrix and wedge. They can be used with other systems, but they’re also designed to work together.”

For more information, call (855) 712-5327 or visit

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