The diamond-coated 15802 endodontic bur from KOMET USA is used in tandem with the H269QGK tungsten carbide bur to offer the dentist optimal, straight-line access to the root canal for fast and effective lateral shaping of the canal entrance. The canal-preparation procedure is initiated with the ball-shaped 15802 bur, which quickly and efficiently penetrates hard dental enamel, thereby enabling the practitioner to readily advance to the pulp cavity. The procedure continues with the H269QGK for enlarging the pulp cavity.