The patient was a 28-year-old woman without any systemic disease. She attended for the removal of mandibular right wisdom tooth. On the basis of palpitation report, plain mepivacaine had been used. Gow-Gates injection was used for this purpose, and immediately after injection, blanching occurred in the infraorbital, buccal, and palatal regions [].
A 32-year-old female patient in healthy conditions attended for extraction of second maxillary right premolar. Immediately after buccal infiltration, a white patch appeared lateral to the nasolabial fold [].