The field of anesthesia of an IO nerve block includes the:
A) Pulps of maxillary central incisors through canine, and upper lip, side of nose, and lower eyelid
B) Pulps and periodontium of maxillary central incisors through canine and premolars, mesial buccal root of the first molar, upper lip, side of nose, and lower eyelid
C) Pulps of maxillary incisors, canine and premolars, upper lip, and side of nose
D) Pulps and maxillary periodontium of incisors, canine, premolars

Question

Quizplus · Accepted Answer

The correct answer is B because an infraorbital (IO) nerve block anesthetizes the pulps and periodontium of maxillary central incisors through canine and premolars, the mesial buccal root of the first molar, and soft tissues such as the upper lip, side of nose, and lower eyelid. This is due to the infraorbital nerve's innervation area, which includes the terminal branches that affect these specific teeth and facial regions.

The Field of Anesthesia of an IO Nerve Block Includes