Triodent V3 sectional matrix system

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Triodent-V3-sectional-matrix-system2by Dr Pino Giusti, Moss Vale Dental Clinic, NSW

The system includes nickel-titanium V3 sectional matrix rings (green for molars and yellow for premolars) as well as matrices and wedges. The rings create optimal separation forces to establish tight contacts and anatomically accurate Class II composite resin restorations.

This system has been around for a while but I was initially resistant to using it as the glass fibre tines on the ring looked too bulky. My Dentsply rep allowed me to trial them and I was sold instantly. I’ve been using them for six months with excellent results.

What’s good about it

I felt that other bitine rings fell short of an ideal result. With V3 rings, my contact points with posterior resins have become noticeably more predictable and improved significantly, even when quite extensive restorations are involved.

There are a number of advantages to the wide glass fibre tines of the rings. Firstly, they conform closely to the proximal walls of the cavity resulting in little if any ‘flash’. Secondly, they straddle the wedge rather than pushing it to one side which can deform the sectional matrix and the resulting restoration. And finally, they prevent the ring from collapsing into wide cavities.

The wedges are plastic and anatomical which helps adaptation of the matrix at the gingival floor of the cavity thus helping to prevent overhangs.

The rings can also be easily stacked when multiple proximal boxes are being restored. They are angled up allowing sufficient room to do this.

What’s not so good

Very occasionally the rings may slip off when there is not enough room to engage the tooth as in cases where a rubber dam clamp is present.

Where do you get it

Dentsply.

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