DISCUSSION
The use of the 80 reading as a criterion for pulpal anesthesia was based on the studies of Dreven et al and Certosimo and Archer. These studies showed that an 80 reading ensured pulpal anesthesia in vital asymptomatic teeth. Additionally, Certosimo and Archer demonstrated that electric pulp test readings less than 80 resulted in pain [...]

RESULTS
Forty adult patients, 30 men and 10 women, aged 2034 years, with an average age of 26 years, participated in this study. One hundred percent of the patients had subjective lip anesthesia with the IAN blocks. The rates of anesthetic success are presented in Table 1. Success rates for the IAN block alone ranged from [...]

MATERIALS AND METHODS
Forty adult patients participated in this study. The patients were in good health and were not taking any medications that would alter pain perception. The Ohio State University Human Subjects Review Committee approved the study, and written informed consent was obtained from each patient.

The inferior alveolar nerve (IAN) block is the most frequently used mandibular injection technique for achieving local anesthesia for restorative and surgical procedures. However, the IAN block does not always result in successful pulpal anesthesia. Failure rates in anterior teeth have ranged from 10%-90%.