The risk of furcal perforation in mandibular molars using Gates-Glidden drills with anticurvature pressure

After using GG drills and anticurvature pressure, dentin was uniformly removed regardless of the size of the GG and the depth of placement of GG. Flaring with GG drills in mandibular molars may result in perforations; application of anticurvature pressure did not reduce the risk.