1Mohd Sulong MZ.The incidence of postoperative pain after canal preparation of open teeth using two irrigation regimes.Int Endod J,1989,22(5):248-251.
2Nair PN,Henry S,Cano V,et al.Microbial status of apical root canalsystem of human mandibular first molars with primary apical periodontitis after"one-visit"endodontic treatment.Oral Surg Oral Med Oral Payhol Oral Radial Endod,2005,99(2):231-235.
