Articaine Infiltration in Anesthetizing Mandibular Second Primary Molars

infiltration will be performed with articaine and epinephrine 1/100 000 (Artinibsa, Inibsa, Barcelona, Spain) for all patients on their second pri-mary molar. The needle tip was placed in the buccal vestibule and then directed to the apex of the tooth and about one-third to one-fourth of the cartridge will be slowly discharged

this technique will be performed with articaine and epinephrine 1/100 000 for all patients on their second primary molar with conventional technique inferior alveolar nerve block. The thumb will be placed on the occlusal surface of intended side and protruded toward the inner oblique ridge of ramus and then placed in touch with retromolar pad. The syringe will be directed between the two mandibular primary molars of opposite side and the needle will be pushed forward until hitting the bone, then the injection will be slowly done. After three to five minutes, treatment will be started, after numbness in the lower lip is achieved