• Rishab Ranjan, S N Santhosh Kumar, and Manju Singh.
• Dental Surgeon, Dental Care Centre, Saharanpur, Uttar Pradesh, India.
• Indian J Dent Res. 2018 Sep 1; 29 (5): 611-615.

BackgroundTwo percent lidocaine hydrochloride is the gold standard for dental anesthesia against which newer local anesthetic agents may be compared. 0.75% ropivacaine is a newer, long-acting amide local anesthetic agent with inherent vasoconstriction property.AimThis study aims to compare the efficacy of 0.75% ropivacaine and 2% lidocaine hydrochloride with 1:200,000 adrenaline in pain control in extraction of mandibular posterior teeth.Settings And DesignThis is a prospective, double-blind, and split-mouth study.Subjects And MethodsTwenty patients were divided into two groups according to the right and left sides of patient - side A and side B. The side, where 0.75% ropivacaine was to be administered, was randomly selected by flip coin method. Then, the pterygomandibular and long buccal nerve blocks were administered with 0.75% ropivacaine and necessary dental extraction was performed. After 1 week, the same procedure was repeated using 2% lidocaine hydrochloride with 1:200,000 adrenaline. The parameters assessed were pain on injection, onset of anesthesia, pain during the extraction, and duration of anesthesia.Statistical Analysis UsedThe nonparametric data were assessed by Mann Whitney "U" test.ResultsThe mean onset of action for solution A was 7.15 ± 4.934 min and for solution B was 9.75±5.128 min. This was statistically significant. The mean duration of action, pain on injection, and pain during extraction were not significant.ConclusionThis study clearly states that there is no clear advantage of using 0.75% ropivacaine in pterygomandibular nerve block over the gold standard. However, more clinical studies with larger sample size are necessary.

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