Can EMLA be used intraorally ?

EMLA (eutectic mixture of local anesthetics) is given in liquid form. Until recently, EMLA was approved only for numbing intact skin. It was not used inside the mouth. This is because EMLA reaches the bloodstream rapidly if applied in the mouth.
In 2004, the U.S. Food and Drug Administration (FDA) approved an EMLA product called Oraqix. Oraqix is a gel that can be inserted into the space
between the teeth and gums. The gel numbs the gums within 30 seconds. The effect lasts for about 20 minutes. It is only designed to numb soft tissue. It will not numb teeth. For this reason, Oraqix may be useful during deep cleaning procedures such as scaling and root planing.