Another fantastic technology that Dr. Josephs, who is a dentist in Palm Beach, has invested in is the Virbraject. This small device is based on the Gate Control Theory of nerve function. In short, the theory suggests that nerve endings sense vibrations first and then cannot transmit feelings of dental injections. Or, to put it another way, it is difficult for you to feel two things in the same area at the same time. So the vibrations essentially mask the discomfort, putting you at ease during even the most dreaded injections.