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 mouthtechnique was carried out. A calibrated single examiner used an appropriate amount of anaesthetic solution, 2% lidocaine with 1100,00 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 injectiontechnique.
Results:
The total sample size consists of 37 study subjects. Out of total study subject, 35 subjects reported increased pain score while using conventional injectiontechnique 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 injectiontechnique 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 injectiontechnique.