Efficacy and Reliability of Single Tooth Anesthesia (STA) for Surgical Removal of Impacted Wisdom Teeth: A Comparative Study.

Introduction: Single tooth anesthesia via intra-ligamentary injections has long been used to provide localized pain control with minimal discomfort while avoiding undesirable effects like lip numbness, mainly in pediatric population with definite success. In this study, we aimed to assess the efficacy of single tooth anesthesia (STA) via intra-ligamentary injections using WAND Methodology: Sixty patients were randomly divided into two groups of 30 each where Group I (study group) received local anesthesia via STA system with 4% articaine and Group II (control group) received conventional injection, that is, inferior alveolar nerve block, (IANB) with 4% articaine. Assessment of the effectiveness of the anesthesia was made by noting the onset of action, failure of anesthesia, intra-operative pain and necessity for additional injection. Additional effects such as lip numbness were also noted. Patients were evaluated for pain and discomfort after 24 h. Results: The difference between the mean time for onset of action for STA injections and conventional block and the mean difference in the onset of action between both groups was 2.2 (± 0.25) minutes which was statistically significant ( Conclusion: In spite of some limits in the extent of anesthesia achieved, WAND Supplementary Information: The online version contains supplementary material available at 10.1007/s12663-023-02017-z.