introduction: this study was carried out to compare the capability of k-files with mtwo rotary file in terms of negotiation as well as depth of penetration in second mesiobuccal (mb2) canal of maxillary first molar. materials and methods: a total of 32 mb2 canal of maxillary first molars having different root curvatures (not more than 30 degree) and root lengths were selected and then detected ...

Sunn pest is one of the most important cereal pests that affect both grain yield and quality of cerealin Iran. One potential control strategy is to use entomopathogenic fungi such as Beauveriabassiana Vuillemin as mycoinsecticide to control this pest. Naturally infested Sunn pests inKermanshah province were collected and brought to laboratory. 10 isolates were selected forfurther analysis in th...