Maxillary, Mandibular, TMJ Anatomy Flashcards
What does the maxilla consist of
It consists of 4 projections: The frontal process, The zygomatic process, The palatine process and The alveolar process (The alveolar bone)
How many surfaces does the maxillary anatomy have and what are they called
It has 4 surfaces: Anterior, superior, posterior and medial
How many bones does the maxilla articulate with and what are the bones called
It articulates with 9 bones called: frontal, ethmoid, nasal, zygomatic, lacrimal, palatine, vomer, inferior nasal concha, mandible
What are the features of the maxillary bones (facial view)
What are the features of the maxillary bones (medial view)
What are the features of the maxillary bones (lateral view)
What are the features of the maxillary bones (palatal view) inferior view
What is an abnormality of the maxilla
Cleft palate - two halves of palate do not properly fuse together
Cleft lip - small notch or wide gap reaching the nose
What are difficulties in cleft palate
Difficulty feeding, hearing problems, speech problems and dental problems
What are the external features of the mandible
. The external oblique ridge
. The mental foramen
. Mental protuberance (chin)
. Mental tubercles
What are the internal features of the mandible
.Mylohyoid ridge
.sublingual fossa
.submandibular fossa
.genial tubercle
.digastrice fossae
.mandibular foramen
What are articulations of the mandible
It articulates with the temporal bone via the
Temperomandibular Joint (TMJ)
What are the key parts of the mandible
●A - Body
●B - Ramus
●C - Coronoid process
●D - Condyle
●E - Alveolar process
Ramus
That ramus has
2 surfaces - lateral and medial
4 borders - anterior, posterior, upper and lower
2 processes - the condyle and the coronoid process
What are the muscles attached to the body of the mandible
The muscles are: buccinator, massater, temporalis, mentalis, orbicular oris, depressor anguli oris, mylohyoid , genioglossus, platysma, geniohyoid, digastric
Name some of the nerves which are closely related to the mandible
Inferior alveolar nerve, lingual nerve, temporal nerve, mental nerve, mylohyoid nerve, massertic nerve
What are the bones of the TMJ
. Mandibular (glenoid) fossa
. Articular eminence of the temporal bone
. Mandibular condyle
What are the ligaments of the TMJ
The ligaments give passive stability to the TMJ
. temporomandibular ligament -
. stylomandibular ligament
. sphenomandibular ligament
Where is the articulation in the TMJ
It’s between the mandibular condyle and the inferior surface of the temporal bone
What are the functions of ligaments
●Accessory ligaments may limit border movements of the mandible
●Fibrous capsule and TMJ ligaments may limit extreme lateral movements in wide opening of mandible
