2.3. Interventions
inferior alveolar nerve block, NRS, anxiety, pain
SIDE EFFECTS, CAVITY, COMPLICATIONS
Eligible patients were enrolled after signing informed consent forms. They were briefed about the study protocol and objectives and the advantages and possible side effects of medications.Demographic information of patients was recorded, and their preoperative level of pain and anxiety was quantified using an NRS. Accordingly, they were requested to select a number from 0 to 10 that best described their pain level (0 indicated no pain at all, while 10 indicated most severe pain imaginable). A graded NRS with information below each number was used in this study for easy understanding and high accuracy [All procedures were entirely performed under rubber dam isolation. Patients received 1 cartridge of 2% lidocaine with 80,000 epinephrine (Persocaine, Darupakhsh, Tehran, Iran) for inferior alveolar nerve block. If the patients had pain during access cavity preparation or root canal therapy, they received a PDL supplemental injection of lidocaine. An apex locator (Root ZX, Morito Corporation, Kyoto, Japan) was used for determination of the working length. The working length was determined 1 mm shorter than the radiographic apex and confirmed by a periapical radiograph. In addition, 1 mL of 2.5% sodium hypochlorite was used for root canal irrigation after using each file to the working length. First, the coronal part of the canals was flared with Side effects and complications reported by patients were also recorded.