Efficacy of D‐RaCe and ProTaper Universal Retreatment NiTi instruments and hand files in removing gutta‐percha from curved root canals – a micro‐computed tomography study

Abstract

D-RaCe instruments were associated with significantly less residual filling material than ProTaper Universal Retreatment instruments and hand files. Hedström files removed significantly less dentine than both rotary NiTi systems. Retreatment with rotary NiTi systems resulted in a high incidence of procedural errors.