VibraJect is a simple and cost effective solution to alleviate injection discomfort. It works because the light pressure of a Vibraject injection is carried rapidly to the brain on thicker more insulated nerve tissues.
By contrast, the needleprick travels on thinner nerve tissues, arriving too late for the brain to register the sensation. This conforms with the well established Gate Theory of Perception. Vibraject is good news for the patient, because the anaesthetic itself causes virtually no discomfort and good news for the dentist, who can work normally knowing the patient is comfortable.