摘要 |
The invention comprises an asymmetrically shaped matrix band (30). The asymmetrical shape of the matrix band (30) provides form for molding a dental filling into a shape that closely approximates the asymmetrical and generally trapezoidal shape of a tooth. The matrix band (30) comprises a cross-sectional area that curves asymmetrically (32) in the vertical direction along a curve that is constrained by two radii. The first radius is applied near the top of the matrix band and has a magnitude that is approximately one third of the magnitude of the second radius that is applied at the bottom of the matrix band. The curvature of the cross-sectional area enables the matrix band (30) to also provide form for molding a dental filling with a contact point in the anatomically correct location on a restored tooth. |