The rubber dam was applied on the tooth and the working area disinfected with chlorhexidine-ethanol solution. Temporary topfilling was removed with high speed hard metal bur. Four root canals were located, and a working length radiograph was taken.
The rubber dam was applied on the tooth and the working area disinfected with chlorhexidine-ethanol solution. Temporary topfilling was removed with high speed hard metal bur. Four root canals were located, and a working length radiograph was taken.