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 [].
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.