1. M. Hochman, D. Chiarello, C. B. Hochman, R. Lopatkin, and S. Pergola .Computerized local anesthetic delivery vs traditional syringe technique., NY State Dent J, 1997 .August/September :24 –29 .
2. J. P. Rood, The pressures created by inferior alveolar injections., Br Dent J, 1978 .144 :280 –282 .
3. E. L. Pashley, R. Nelson, and D. H. Pashley .Pressures created by dental injections., J Dent Res, 1981 .60 :1742 –1748 .
4. R. C. V. Aitken, Measurement of feelings using visual analogue scales., Proc R Soc Med, 1961 .62 :989 –993 .
5. M. Kudo, M. Kato, M. Kokubu, and N. Shinya .Evaluation of the relationship between a Face Anxiety Scale and the State-trait Anxiety Inventory., Higashi Nippon Dent J, 1995 .14 :7 –62 .