Before revision: Although the long buccal nerve is not anesthetized by an IANB , meaning that an area of buccal gingiva (gums on the cheek side) of the lower back teeth retains normal sensation unless that nerve is blocked simultaneously .
After revision: However, the long buccal nerve is not anesthetized by an IANB and therefore an area of buccal gingiva (gums on the cheek side) of the lower posterior teeth will retain normal sensation unless that nerve is also anesthetized, via a long buccal nerve block .