Local anaesthesia of the maxillary tissues Flashcards
What allows the infiltration in the maxilla
Thin cortical bone permitting the diffusion of anaesthesia through the bone to the target nerve
What does the infiltration inject into
Injects into tissues immediately adjacent to the site
What are the different types of maxillary infiltration
- Buccal infiltration
- Palatal infiltration
Describe buccal infiltration
- Require pulpal anaesthesia of 2 teeth
- Should anaesthetise terminal branches on innervating nerves of adjacent teeth
- Buccal infiltration will always be the anterior, middle or posterior superior alveolar nerve
What length of needle is required for buccal infiltration?
Short needle
What is the target site for the buccal infiltration
- Slightly distal and superior to the apex of the target tooth
- Aiming for the height of the muco-buccal fold of vestibule adjacent to the target tooth
Describe the syringe orientation for buccal infiltration
Should be parallel to the long axis of the tooth
How much of the needle should be inserted for buccal infiltration
- Approx 3-5mm + slowly deposit 0.5-1ml of solution
When is palatable infiltration used
When you require anaesthesia of the palatable gingivae of a corresponding tooth only
What does the palatable gingiva anaesthetise
Anaesthetises the terminal branches of the nasopalatine nerve
What is the target boney site for the palatable infiltration
The greatest angle of the palate, the junction of the palatine process of the maxilla and the alveolar process of the maxilla
What’s the soft tissue landmark of the palatable infiltration
The soft tissue landmark is the curvature of the palate
What must the orientation of the palatal injection be
Needle is inserted at a 45º angle to the palate at the junction
How far should the needle in inserted for a palatable infiltration
Approx 1-2mm, then slowly deposit 0.1-0.3ml of solution
What should you see when you have anaesthetised the palatal surface
Blanching of the tissues
