The patient was a 63-year-old man who attended for right maxillary sinus lift procedure. On the basis of previous heart problems, epinephrine was not used in the local anesthetic cartridge. Maxillary block injection from greater palatine canal approach was used for obtaining profound anesthesia. Facial and palatal blanching occurred immediately after the injection, and the patient felt burning and itching sensation on the face [].
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 [].