nerve innovations for LA
what does the greater palatine nerve supply
exit: adjacent to the maxillary second molars as the greater palatine nerve enters the posterior part of the hard palate it runs anteriorly to supply the mucosa of the hard palate and gingiva and PDL from teeth 8 to 4 maxillary nerve divides and in the pterygopalantine fossa. one branches off via the sphenopalantine ganglion and becomes the descending palatine palatine nerve that runs inferiorly through the greater and lesser palatine foramen
anterior superior alveolar nerve
exit: apical foramen 0f 1, 2, 3 supply: when MSA is not present will supply 1-6 if MSA is present will supply > supply the pulp of 1-3 >supporting alveolar bone >PDL's >buccal gingiva >part of maxillary sinus
the lesser palatine
exit: posterior to the greater palatine foramen, in line with the 3rd molars image 2 the mucosa of the soft palate and uvula
long speno-palatine
exits: between the 2 incisors at the incisive foramen supply: the palatal gingiva and PDL around the maxillary 1, 2, 3, 4 maxillary nerve divides to become the long spenopalantine nerve> goes to the spenopalantine ganglion > runs along the roof of the nasal cavity and diagonally down the nasal septum (vomer) to run into the INCISIVE canal> incisive foramen
PSA: posterior superior alveolar nerve
supply to the mucous membranes of the sinus pulps and PDL's of the maxillary 8, 7, 6 (not always the mesiobuccal root) exit: apical foramina of maxillary molars
Middle superior alveolar nerve
30% of the population don't have the MSA exit: apical foramen of the maxillary PM supply: > the maxillary premolars and the mesiobuccal root of the 6 > supporting alveolar bone >buccal gingiva in the maxillary 3, 4, 5, 6, >part of the maxillary sinus