Anesthetic Efficacy of 1.8 ml Versus 3.6 ml of 4% Articaine Buccal Infiltration

Patients with moderate-to-severe pain due to symptomatic irreversible pulpitis will be included. Patients will be randomly assigned into two groups to receive either 1.8 ml 4% articaine buccal infiltration or 3.6. ml 4% articaine buccal infiltration before single visit root canal treatments. Intraoperative pain will be assessed using an 11-point numerical rating scale (NRS) so that anesthetic success will be defined as no to mild intraoperative pain. The need for supplemental anesthesia will also be recorded.