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 [].
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 [].