ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,011, issued on Sept. 9.
"Dental matrix bands" was invented by Hung M. Thai (San Jose, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Dental matrix bands with novel surface structures and use thereof in dental procedures are described herein. The matrix band features a three-dimensional surface structure that is contoured to an outer portion of a torus to allow the matrix band to securely fit around a tooth. The matrix band has an outer surface of the matrix band; an upper and lower edge of the matrix band; a proximal and distal end of the matrix band; and a concave ridge disposed along the band. The outer surface of the band forms a first co...