1. For which materials is OptraMatrix® suitable?
    OptraMatrix® has been designed for regular viscosity composite materials. However, the matrix bands
    can also be used in conjunction with other pliable filling materials, e.g. amalgam.
    (top of page)

2. Can OptraMatrix® be used in conjunction with flowable composites?
    Yes, however care should be taken not to polymerize the flowable material along the edges of the matrix
    band in the direction of the occlusal surface making it more difficult to achieve tight contact points. (top of page)

3. Does OptraMatrix® require the use of interdental wedges?
    Yes. However, wedges may not be required if the matrix band provides a tight seal in the cervical area.
    The wedges are only required for cervical adaptation, as the need for forceful separation of the teeth is
    eliminated due to the substantial reduction in material. Consequently, only light pressure and small wedges
    are required to apply the matrix. (top of page)

4. Which matrix retainers can be used in conjunction with OptraMatrix®?
    OptraMatrix® can be used in conjunction with all conventional Tofflemire matrix retainers. (top of page)

5. How much torque may be applied to the matrix when tightening?
    OptraMatrix® should be tightened until medium resistance is felt and a tight marginal seal is achieved.
    OptraMatrix® should not be tightened as firmly as conventional Tofflemire matrices. (top of page)

6. Does the thinned contact area or “window” have an adverse effect on the strength of the matrix band?
    The strength is only slightly reduced, as OptraMatrix® is thinned in specific areas. The general wall
    thickness of OptraMatrix® is not any different from that of conventional matrix bands. (50µm) (top of page)

7. Do the selectively thinned contact areas and firm contact points create difficulty in
    removing OptraMatrix®?
    Removing the matrix may be slightly more difficult, as the contact points created with OptraMatrix® are much
    tighter and broader than those produced with conventional matrices. Using diamond-coated tweezers,
    which provide a “better grip”, may facilitate the removal of the matrix. (top of page)

8. Is it possible to burnish the matrices?
    As OptraMatrix® provides a high level of elasticity in the contact areas, burnishing is not required. (top of page)

9. Is it useful to utilize OptraMatrix® and OptraContact® in combination?
    For optimum results use both OptraMatrix® and OptraContact® together. (top of page)

10. Can OptraMatrix® be used in conjunction with separating rings?
      Theoretically, OptraMatrix® can be used in conjunction with separating rings. However, the use of
      separating rings is no longer necessary as OptraMatrix® features a substantial reduction in the thickness
      of matrix material being inserted between the teeth. (top of page)