Apical third Bicuspid 1 Biofilms 1 Colony Count, Microbial 1 Dental Pulp Cavity 1 Disinfection 1 Enterococcus faecalis 1 Humans 1 Mandible 1 Microscopy, Electron, Scanning 1 Root Canal Preparation 1 Sodium Hypochlorite 1 bacterial count 1 biofilm 1 dental pulp cavity 1 devices 1 disinfection 1 growth, development and aging 1 human 1 hypochlorite sodium 1 mandible 1 microbiology 1 premolar tooth 1 reverse rotary instrumentation 1 root canal preparation 1 scanning electron microscopy 1 sodium hypochlorite 1 ultrastructure 1