Maxillary Anatomy Flashcards
How many maxillary bones are there?
Two, joined together down the midline
Which bone makes up the greater part of the upper facial skeleton?
Maxilla
What does the maxilla help form?
Shape and support of face
House upper teeth
Roof of oral cavity
Orbital floor
Lateral wall of nasal cavity
Fixed articulations of the maxilla?
Frontal bone
Nasal bone
Zygomatic bone
Vomer
Palatine bone
Internal maxilla articulations?
Lacrimal bone
Ethmoid bone
Interior concha
What process of the maxilla forms the sockets for teeth and supporting bone?
Alveolar maxillary process
Which maxilla process is on the lateral aspect?
Zygomatic process of maxilla
Which maxilla process is a bar of bone that projects upwards from anterosuperior aspect?
Frontal process of maxilla
What does the palatine process of the maxilla form?
Roof of oral cavity and floor of the nasal cavity
What are some of the main features of maxillary bones?
- Infra orbital foramen (opening of nerves and blood vessels)
- Incisive foramen (behind maxillary incisors, avoid when giving LA)
- Canine eminence (due to long roots)
- Zygomatic process
- Palatine process
- Alveolar process
What can infection of the maxillary sinus present as?
Toothache in upper molars
Features of the maxillary sinus?
- Large air space, one in each maxillary bone
- Extends to; facial surface, zygomatic processes, infra-temporal wall and alveolar process
- Closely related to roots of upper molars
What surface of the maxilla helps form the upper face?
Facial
What surface of the maxilla forms the bulk of the lateral wall of the nasal cavity?
Nasal
What maxillary surface forms the floor of the orbit?
Orbital surface
