DH 389: Injection sites

What is the injection site for ASA?

• Mucobuccal fold between maxillary lateral and canine

What is the injection site for MSA?

• Height of mucobuccal fold above maxillary second premolar

What is the injection site for PSA?

• Height of mucobuccal fold above the maxillary second molar

• 45 degree angle

• Landmarks: mucobuccal fold, maxillary tuberosity & zygomatic process of the maxilla

• 27 gauge SHORT needle

• Deposit over 30-60 sec

What does the PSA anesthetize?

• Maxillary 3rd, 2nd, and 1st molars

• EXCEPT THE MB root of the 1st molar

What injection may cause a hematoma?

• PSA - Posterior Superior Alveolar

• May hit the pterygoid plexus

What is the injection site for NP?

What is the injection site for GP?

• soft tissue slightly anterior to the greater palatine foramen.

• Place cotton swab at junction of maxillary alveolar process and the hard palate

What is the injection site for IA?

• Landmarks: coronoid notch (greatest concavity on the anterior border of the ramus); pterygomandibular raphe (vertical portion); occlusal plane of the mandibular teeth

What is the injection site for lingual?

• Come half way out after giving IA injection and deposit solution after aspirating again

• Almost always gets anesthetized when giving the IA injection

What does the lingual nerve anesthetize?

Half the tongue

What is the injection site for Long buccal?

• Insert in mucous membrane distal and buccal to most distal molar tooth in the arch

• Orient bevel toward bone

What is the injection site for mental?

• Mucobuccal fold at or just anterior to mental foramen

• Target area: mental nerve as it exits the mental foramen (usually located between apices of 1st and 2nd premolars)

• Can be reached straight on when sitting at 12

What is the injection site of incisive nerve block?

• Same as mental

• After injection apply pressure at injection site introrally or extraorally for 2 minutes

What is the supraperiosteal injection?

• AKA local infiltration

• Used for pulpal anesthesia of maxillary teeth

• Used when dental procedures are confined to 1-2 teeth in max

What does the supreaperiosteal injection anesthetize?

• Anesthetizes the entire region innervated by the large terminal branches of this plexus:

  • Pulp and root of the tooth

  • Buccal periosteum

  • Connective tissue

  • Mucous membrane.

• 27 gauge SHORT needle

What is the supraperiosteal injection used for?

Hemostasis