A commonly suggested method for removal of CH is the irrigation with NaOCl and EDTA accompanied by very light instrumentation and the use of MAF19,25. Many techniques have been proposed to increase the efficiency of the irrigation solution. Mechanical agitation with a handpiece, gutta-percha or plastic tools, sonic and ultrasonic activation are also suggested techniques. In addition, LAI is another efficient and current method13,21. Kenee, et al.16 (2006) removed CH by four different procedures and demonstrated that the use of hand files and irrigation solution alone was not very effective on the removal of CH.