Dental Anatomy Lecture 7 Flashcards
Buccal
Towards Cheeks
Lingual
Towards Tongue
Labial
Towards lips
Distal
Back side of tooth
Mesial
Forward side of tooth
Posterior
Teeth at back of mouth
Anterior
Teeth at front of mouth
Mammal tooth anatomy
Consists of crown and one or more roots
Made up primarily of dentine
Crown covered in layer of enamel
Root coated with cementum
Crown and root hollow
Crown’s interior chamber connects with a canal in each root
Chamber and canal filled with pulp, soft tissues containing nerves and blood vessels
What’s the crown covered in
Enamel
What are roots coated in
Cementum
Dividing line between enamel and dentin
The cervix or enamel-dentin junction
Where are mammal teeth held
In the alveolar sockets of the premaxilla, maxilla and mandible
what are teeth held in place by?
periodontal ligaments, which contain stretch receptors which provide information on tooth loading during chewing
Mammalian teeth can be divided by position in mouth, and by function, into four types
Anterior teeth 1. Incisors 2. Canines Postcanines/cheek teeth 3. Premolars 4. Molars
position of incisors
Front teeth; uppers rooted in premaxilla (or when premaxilla is absent, the front
of the maxilla);
lowers implanted anteriorly in mandible
incisors shape
Chisel-like or shovelshaped
incisors function
Grasping, nipping, stripping, scraping
canines position
Next to incisors; usually first teeth in maxilla
when premaxilla is present; behind incisors in mandible
canines shape
Typically unicuspid with single roots; can be long
and dagger-like, eg in cats and primates
function of canines
Stabbing, biting, holding prey
premolars position
Just behind canines
premolars shape
Size and shape hugely variable depending on life history and diet; may also vary anterior to posterior
premolars function
Varied. Crushing (eg hyaenas), slicing (cats),
shearing and grinding (antelope)
molars position
back teeth
