LA anatomy Flashcards
What teeth does an infraorbital nerve block anaesthetise?
U1 - U6 MB
What is anaesthetised by an Anterior Superior Alveolar nerve block?
U1 - U3
buccal gingivae/mucosa
What is anaesthetised by a Middle Superior Alveolar nerve block?
U4 - U6MB
Buccal mucosa & gingivae
What is anaesthetised by a Posterior Superior Alveolar nerve block?
U6 (not MB) - U8
What is anaesthetised by a Nasopalatine block?
palatal mucosa U3-3
What is anaesthetised by a Greater Palatine block?
palatal mucosa U4 - U8
What is anaethetised by a Buccal block?
Buccal mucosa L8 - L6 & papilla between L6 & L5
What is anaesthetised by an Inferior Alveolar block?
L1 - L8
ipsilateral lip & chin (via mental nerve)
ipsilateral tongue (lingual nerve)
What is anaesthetised by an Incisive block?
L1 - L5 & buccal mucosa
What injections can be given for maxilla?
- infraorbital nerve block
- anterior superior alveolar nerve block
- middle superior alveolar nerve block
- posterior superior alveolar nerve block
- nasopalatine block
- greater palatine block
What injections can be given in the mandible?
- buccal block
- inferior alveolar block
- incisive block
Where is the non-dominant thumb placed for the IANB
Intra-orally in the retro-molar region of the mandible
Where is the non-dominant index or middle finger placed for the IANB?
Extra-orally at the posterior border of the ramus
In what position does the needle enter the mouth for an IANB?
Needle is advanced from the premolar region of the opposite side, with the syringe held parallel to the mandibular occlusal plane
Where is the needle inserted for an IANB?
Through the mucosa in the mandibular retro-molar region lateral to the pterygomandibular raphe, midway between the raphe and the anterior border of the ascending ramus of the mandible, aiming for a point halfway between the operator’s thumb and index finger
About 5mm above the mandibular occlusal plane
How far is the needle inserted for an IANB?
Until the medial border of the mandible is reached
Once bone has been touched, the needle is withdrawn slightly until it is supra-periosteal
How much local anaesthetic is deposited in an IANB?
1.5ml, then withdraw halfway and deposit the remaining 0.5ml
How is the lingual nerve anaesthetised in an IANB?
By withdrawing the needle halfway, aspirating again and depositing most of the remaining solution
if you are providing anaesthesia to the maxillary teeth dental pulp, what LA technique would be used?
buccal infiltration
if you are aiming to anaesthetise the maxillary teeth buccal ginigivae, what LA technique would be used?
buccal infiltration
if you are aiming to anaesthetise the maxillary palatal gingivae of a tooth, what LA technique would be used?
palatal injection
when would a mandibular dental block injection be used? (IDB/IAN)
to anaesthetise the pulp of the lower molars and second premolar
when would a mental nerve block techique be used?
when providing dental pulp anaesthetic to the lower premolars and canine
what LA technique is used to provide anaesthesia to the lower canine and incisors pulp?
buccal/labial infiltration
when providing anaesthesia to the buccal gingivae of the lower molars & second premolar, what LA technique is used?
long buccal infiltration
what LA techniques would be used to provide anaesthetic to the buccal gingivae of the lower premolars and canine?
- infiltration
- long buccal infiltration
- mental nerve block
how would you anaesthetise the buccal gingivae of lower canines and incisors?
provide LA via buccal/labial infiltration
how can the lingual gingivae of the mandibular arch be anaesthetised?
- lingual nerve block
- lingual infiltration
patient is booked for an extraction of their 14, what LA technique would you use?
- infiltration technique
Patient is booked for extraction of their 14. What needle would you use?
short needle (blue, 25mm)
Patient is booked in for extraction of their 14, what anatomical feature would you use to administer LA?
administer distal to apex of 14 at the muccobuccal fold
