“…Pain management during endodontic treatment is crucial for both the patient and the dentist; inadequate pain control could pre‐dispose to fear and anxiety, and consequently avoidance of treatment (Murillo‐Benítez et al, 2020). Symptomatic patients are more likely to experience local anaesthetic failure during treatment and postoperative pain, especially in mandibular molars (Aggarwal et al, 2015; Hargreaves & Keiser, 2002; Weitz et al, 2021; Yücel et al, 2018). The inferior alveolar nerve block (IANB) is the most common technique used for anaesthetising mandibular molars (Zanjir et al, 2019), yet its failure rate could range from 30% to 90% (Aggarwal et al, 2015; Hargreaves & Keiser, 2002; Potočnik & Bajrović, 1999; Zanjir et al, 2019); every effort to attain pain‐free treatment is, thus, important.…”