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SGU SVM ANATOMY I: Digestive System, Teeth and jaw.

Terms in this set (30)

where is the crown of the tooth?
Crown: Part of tooth above gingiva
where is the neck the tooth, and what should you be aware of when cleaning?
Neck: Part of tooth covered by gingiva but not covered by periodontal membrane (careful to clean in here as it can be overlooked and become infected)
where is the tooth socket located?
Tooth Socket: Bony portion of root of tooth
what is the periodontal ligament?
Ligament attaching cementum of tooth to socket
what is enamel?
Enamel: Mineralized portion of tooth in crown
what is Dentine, Cementum?
...
The "pulp" in pulp cavity consists of what?
Pulp/Pulp Cavity:* Vascularized and innervated portion of tooth
what is the Apical Foramen?
Apical Foramen: Opening at base of tooth for nerves and vessels to enter pulp cavity
What composes the periodontium?
Includes cementum on root, alveolar bone (socket), and peridontal ligament
Gomphosis Articulation
What is the function the periodontist/peridontal ligament in particular?
prevents the tooth from sinking further into the bone, and to prevent the tooth from being pulled out
Hypsodont vs. Brachydont
Longer crown, shorter root

Shorter crown and root
Diphyodont vs. Polyphyodont
Only two sets of teeth, deciduous and permanent

Teeth continuously replace any that fall out (shark teeth)
Isognathic
Lower jaw is slightly smaller than upper jaw, only one side connects at a time, chewing occurs in a circular motion
Ex: Rodents, horses etc
Anisognathic
Lower and Upper jaw are the same size, both sides of the jaw connect at the same time, chewing is up and down
Ex: Carnivores
What is classification and different numbers of teeth based on?
Function of teeth and type food animal eats
What is the modified triadan system?
Consistent method of numbering teeth across different animal species
Tooth Numbering in Dog
Tooth Numbering in Cat
Which teeth are missing from the cat, that the dog has?
UPPER
Premolars
105, 205
Molars
110, 210,
LOWER
Premolars
405, 406, 305, 306
Molars
410, 411, 310, 311
How many deciduous/permanent teeth do Canines vs. Felines have?
Canine
28 Deciduous
42 Permanent
Feline
26 Deciduous
30 Permanent
What are carnassial teeth? and what is there function?
AKA Sectorial
Largest shearing teeth in the mouth for both dog and cat
Superior 4th (last) premolars
Inferior 1st molars
What is important to know about the carnassial teeth in relation to infection?
Closely associated with maxillary and nasal bone, so if infection occurs at these teeth (such as after extraction), it can spread through the sinuses or up to the brain.
What week do puppies start getting teeth?
3 weeks old
What week do kittens start getting teeth?
2 weeks old
Eruptions Dates of Canine Teeth (Canine)
Deciduous
3-5 weeks
Permanent
5-7 months
Eruption Dates of the Premolars (Canine)
Deciduous
5-6 weeks
Permanent
6-7 months
Eruptions Dates of Canine Teeth (Feline)
Deciduous
3-4 weeks
Permanent
5.5-6.5 months
Eruption Dates of the Premolars (Feline)
Deciduous
5-6 weeks
Permanent
5-6 months
Blood Supply to Teeth
Upper
Infraorbital branches from maxillary arteries and veins
Lower
Mandibualveolar artery and vein
Nerve Supply to Teeth
Upper or Maxillary Teeth
INFRAORBITAL NERVE
From trigeminal n., to maxillary n., to ==>
Lower or Mandibular Teeth
INFERIOR ALVEOLAR NERVE
From trigeminal n. to mandibular n. to ==>
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