Which of the following statements about a buccal nerve block is false?

The statement regarding needle insertion depth being 10 mm for a buccal nerve block is not accurate because the typical depth of insertion is generally around 2-5 mm. The buccal nerve block involves the injection of anesthetic near the buccal nerve, which is responsible for sensory innervation to the buccal mucosa adjacent to the molars. Due to the anatomical location of the buccal nerve, a very shallow insertion is adequate to achieve effective anesthesia without penetrating too deeply into the tissue.

The other statements accurately represent aspects of the buccal nerve block procedure. The needle indeed is inserted into the buccal mucosa, specifically in the area adjacent to the molars, and this procedure is effective for anesthetizing the buccal mucous membrane of those molars. A smaller volume of 0.2 ml of local anesthetic solution is typically sufficient to achieve the desired anesthetic effect in the targeted area.