Maxilla - Regional Anatomy Flashcards
1
Q
Anatomical features
A
- forms upper jaw bone, anterior part of roof of mouth, lateral walls of nasal cavity and parts of floor of orbital cavities
- immovable bone
- hollow bone - contains maxillary sinus
- middle 1/3 of face
- originates 2 bones - maxillae fuses before birth
2
Q
What are their features (My Mother Can Indeed Post An Instagram)
A
- maxillary sinus
- maxillary tuberosity
- canine eminence
- infra-orbital foramen
- posterior superior alveolar foramina
- anterior nasal spine
- incisive foramen
3
Q
Maxillary sinus
A
- largest paranasal air sinus
- occupies body of maxilla
- close to apices of permanent teeth
4
Q
Maxillary tuberosity
A
- rounded protrusion behind last upper permanent tooth
- few fibres for muscle attachment to join here
5
Q
Canine eminence
A
- prominence on surface caused by socket of canine tooth
6
Q
Infra-orbital foramen
A
- foramen on front aspect below eye, nerves pass through
7
Q
Posterior superior alveolar foramina
A
- foramen high on maxilla
- nerve supply
8
Q
Anterior nasal spine
A
- spike of bone at edge of maxilla and nasal cavity
9
Q
Incisive foramen
A
- foramen on underside behind upper anterior teeth - nerve supply
10
Q
What are the processes
A
- zygomatic
- frontal
- palatine
- alveolar
11
Q
Zygomatic process
A
- projects into cheek
- articulates with zygomatic bone
- forms anterior part of zygomatic arch
12
Q
Frontal process
A
- projects upwards
- forms side bridge of nose
- articulates with frontal bone
13
Q
Palatine process
A
- projects horizontally to form part of hard palate
- separates oral and nasal cavities
- incisive foramen visible
14
Q
Alveolar process
A
- projects downwards
- supports the teeth
- resorbs when teeth are lost
- maxillary tuberosity at distal edge
15
Q
What are the surfaces
A
- facial
- nasal
- orbital
- posterior
