• The bevel is best placed so that it faces distally.
• The needle is inserted into the groove surrounding the papilla.
• The landmarks are the central incisors and the incisive papilla.
• The target area is the incisive foramen, located beneath the incisive papilla.
• The area of insertion is tissue lateral to the incisive papilla.

Nasopalatine Nerve Block:

• The greater palatine foramen can be located by finding the midpoint between the mid-palatine raphe and the palatal gingival margin of the second molar.
• The landmarks are the greater palatine foramen and the junction of the maxillary alveolar process and palatine bone.
• The area of insertion is soft tissue slightly anterior to the greater palatine foramen.

Greater Palatine Nerve Block:

• This point is midway between the gingival crest bisecting the premolars and the median palatine raphe.
• The site of penetration is on the palatal side of the premolars, at the intersection of the horizontal and vertical aspects of the palate.

Anterior Middle Superior Alveolar Nerve Block:

• The needle tip is placed above the apex of the second premolar.
• The bevel of the needle is oriented towards the bone.
• The needle is inserted at the height of the mucobuccal fold above the maxillary second premolar.

Middle Superior Alveolar Nerve Block:

• The needle is positioned in the depth of the sulcus close to the pterygomaxillary fissure.
• The finger is passed posteriorly over the buttress until it dips in a sulcus posterior to the buttress, at an angle of 90 degrees to the occlusal surface of the maxillary teeth and 45 degrees to the sagittal plane.
• The fingertip is rotated so that the fingernail is facing the attached gingiva.