Question 7 of 20

Correct!

It is the posterior superior alveolar (PSA) nerve which provides sensory innervation to the pulps of all the maxillary molars, as well as the buccal periodontium and bone overlying these teeth.

However, in some cases, the mesiobuccal root is not innervated by the PSA. In that situation, the mesiobuccal root can be infiltrated or a middle superior alveolar nerve block can be given.