Figure 45-26 Blocks of nerves supplying the face (supraorbital, infraorbital, and mental nerve blocks), showing the sites for block of the supraorbital nerve (1), block of the infraorbital nerve (2), block of the mental nerve (3), and block of the supratrochlear nerve (4) and identifying the ophthalmic nerve (5), maxillary nerve (6), and mandibular nerve (7).