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 25-year-old man and ASA class I []. Mandibular inferior alveolar nerve block (Halsted’s technique) and long buccal nerve were used for dental implant insertion in the mandibular right quadrant. Facial blanching and palatal–buccal mucosa whitening occurred.