To avoid smile line distortion after an anesthetic injection, what technique is used?
  1. Maxillary nerve block
  2. High tuberosity approach
  3. Anterior nerve block
  4. Palatal approach
Explanation
Answer: D - To avoid smile line distortion after an anesthetic injection, the technique used is the palatal approach. The anterior superior alveolar block requires a dosage of 0.9 to 1.4 ml to provide anesthesia from single-site injection to six maxillary anterior teeth, facial gingiva, and the anterior third of the palate.
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