A thin, flexible, gently angled boomerang shaped matrix band (2) having
an extrusion window (6) located within the medial portion of the band's
(2) inferior and superior borders. Located inferiorly, a gingival separation
notch, (10) is medially aligned with and terminates a measured distance
below the extrusion window (6). Located superiorly, a semicircular bridge
(8) is medially aligned with both the extrusion window (6) and the
gingival separation notch (10).