Injection Technique   Success Rate Successful Non Successful Total Needle entrance between premolars N1=40 29 (72.5) 11 (27.5) 40 (100) Needle entrance from distal of second premolar N2=40 38 (95) 2 (5) 40 (100)

Table 2: Distribution of success rate on the basis of mental-incisive nerve block technique separately (P<0.01).