Which injection anesthetizes the palatal tissues around the left maxillary molar?
(A.) Nasopalatine nerve block
(B.) Greater palatine nerve block
(C.) Posterior superior alveolar nerve block
(D.) Buccal nerve block
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Answer: (B.) Greater palatine nerve block
Key word: palatal tissues
- Greater palatine nerve (GP) block: anesthetizes the hard palate (palatal soft tissues and bone of the premolars/molars) and some part of the soft palate. Does not provide anesthesia for the teeth.
- Nasopalatine nerve (NP) block: anesthetizes the anterior palatal soft tissue and bone of the canine/incisors on both sides.
- Posterior superior alveolar nerve (PSA) block: anesthetizes the pulp of the maxillary first/second/third molars, periodontal tissues, buccal soft tissue and bone of these teeth.
- Buccal nerve block: anesthetizes the mucous membrane of the cheek and the buccal gingiva of the mandibular molars. The buccal nerve is also called the buccinator nerve or long buccal nerve.
Among all the answer choices, only the greater palatine nerve block can anesthetize the palatal tissues of the maxillary molar.
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