Matrix Band Gaps

by Dr. Hal Stewart

It can be frustrating when doing an MO, MOD, DO composite and you cannot get the matrix band sealed completely at the gingival box. To proceed with a gap at the gingival box would result in an overhang. Here is a very quick and easy way to solve this problem and save a lot of time.

  1. Place band and wedge, if there is a gap (figure 1) then:
  2. Take a small cotton or sponge pellet
  3. Soak in your adhesive
  4. Wedge in on the non-prep side of the band, pushing the band in and closing the gap (figure 2)
  5. Proceed with your composite