Sectional matrix systems consisting of a matrix, wedge and ring may create a risk of leakage due to lighter pressure of the wedge against the matrix when a retention ring is applied to separate the teeth. With Directa FenderMate the combined matrix and wedge are inserted as one piece, as easily as a wedge; and employs a special new technology in its curved design that contours and compliments the curvature of the patients tooth. After FenderMate is inserted it adapts around the tooth and holds its shape without the use of a retentive ring. The flexible wing of the FenderMate separates the teeth and firmly seals the cervical margin.