Which three maxillary injection techniques are commonly used to achieve pulpal anesthesia in the anterior region?

• A. Maxillary infiltration; infraorbital nerve block; anterior superior alveolar (ASA) nerve block
• B. Inferior alveolar nerve block; Gow-Gates; Vazirani-Akinosi
• C. Mental nerve block; Palatal infiltration; Greater palatine block
• D. Posterior superior alveolar nerve block; Nasopalatine block; PSA

Answer: (C)

Numbing the maxillary anterior teeth usually relies on reaching the nerve branches that supply the front upper jaw, plus targeted injections near the tooth roots. The anterior superior alveolar (ASA) nerve block directly anesthetizes the pulps of the maxillary anterior teeth (central incisor through canine) and the overlying facial tissues. The infraorbital nerve block covers the same anterior region as well, since its distribution includes the ASA territory, and it often provides broader pulpal anesthesia for several front teeth along with associated soft tissues. To ensure complete pulpal anesthesia across the anterior segment, a local infiltration around the tooth apices can be added, delivering anesthesia precisely at the individual tooth roots where needed.

In contrast, injections aimed at the mandible or at the palate don’t reliably numb the maxillary anterior pulps. For example, mental nerve blocks affect the lower lip and chin (mandibular territory), palatal infiltrations and greater palatine blocks target the palate, and posterior superior alveolar blocks address the posterior teeth, not the anterior maxilla.

So the combination of a maxillary infiltration plus an ASA nerve block and an infraorbital nerve block provides direct, reliable anesthesia for the anterior maxillary teeth.