ABSTRACT
Background: Pain is the most common cause of needle Phobia. In order to overcome this many advanced injection techniques has been implemented. The most recent and advanced technique was using a small vibrating device to the conventional injection technique. Objectives: To evaluate the efficacy of vibraject versus conventional injection technique. Material and methods: Prospective, randomized, cross- over, single blinded design was carried out among adults above 18 years of age in private hospital in Chennai city, Tamil Nadu, India. Out of 52 subjects, 37 were willing to participate in the study. Split mouth technique was carried out. A calibrated single examiner used an appropriate amount of anaesthetic solution, 2% lidocaine with 1:100,00 dilution of epinephrine was injected slowly and then patient was asked to report their discomfort and pain was noted using verbal descriptor scale. Sign test was calculated to check the efficacy of vibraject to that of conventional injection technique. Results: The total sample size consists of 37 study subjects. Out of total study subject, 35 subjects reported increased pain score while using conventional injection technique than using vibraject with a significant difference (Z=-5.5, p=0.00). Out of total study subject, 14 subjects reported increased pain score while using conventional injection technique than using vibraject. The p value for 2-tailed sign test shows (p=0.04) there was significant difference between two techniques. Conclusion: Vibraject has significantly reduced pain both during insertion of needle and during deposition of solution when compared to the conventional injection technique.