What area is anesthetized by palatal local infiltration?

What area is anesthetized by palatal local infiltration?

• A. Soft tissue in the immediate vicinity of the injection
• B. Bone of the hard palate
• C. The entire palate
• D. The buccal mucosa only

Answer: (A)

Palatal infiltration numbs only the soft tissue right around where the injection is placed. The local anesthetic blocks nerve firing in the surrounding palatal mucosa and periosteum, giving numbness to that immediate soft-tissue area. The dense hard palate bone behind it isn’t reliably affected by this small, localized diffusion, so the bone itself remains sensate. To numb the hard palate bone, a nerve block such as the greater palatine or nasopalatine block would be needed. The buccal mucosa isn’t affected because the injection is on the palatal side, not the cheek side.

Palatal infiltration numbs only the soft tissue right around where the injection is placed. The local anesthetic blocks nerve firing in the surrounding palatal mucosa and periosteum, giving numbness to that immediate soft-tissue area. The dense hard palate bone behind it isn’t reliably affected by this small, localized diffusion, so the bone itself remains sensate. To numb the hard palate bone, a nerve block such as the greater palatine or nasopalatine block would be needed. The buccal mucosa isn’t affected because the injection is on the palatal side, not the cheek side.