Rabbit Skull And Dentition Flashcards
What is the rabbit skull and nutrition likened to?
Diets high in what nutritional content are an absolute requirement for rabbits?
What percentage pellets, leafy greens and hay should be eaten by rabbits?
Horses.
Diets high in fibre.
5% pellets.
10% leafy greens.
85% hay.
What anatomical feature in rabbits allows for a good sense of hearing?
How many upper incisors in the rabbit skull?
How many lower incisors?
How many teeth in total?
Dental formula?
A large tympanic bulla.
4 upper incisors (2 rostral and 2 smaller caudal — peg teeth)
2 lower incisors
28 in total.
I2 C0 PM3 M3
I1 C0 PM2 M3
Are teeth aradicular or radicular teeth?
Where do the lower incisors sit?
How is this advantageous?
All teeth are aradicular (open rooted)
Lower incisors sit in between the rostral pair and the rudimentary pair (peg teeth) of upper incisors.
Because the upper rostral pair of incisors can self sharpen as there is enamel on both sides of the lower incisors but only enamel on the labial side of the upper rostral pair of incisors so the lingual side is softer.
What does diphyodont mean?
It means that rabbits have both deciduous teeth and adult teeth and the deciduous teeth are lost when the adult teeth grow through.
When are the deciduous teeth lost?
Name the space between the incisors and the cheek teeth.
What is the mandible united by?
In gestation.
Diastema.
United by a strong fibrous symphysis.
What muscles on the face are enlarged to allow chewing?
Which muscle is smaller as a result and where is this muscle located?
What is the difference of the masseter muscle in rabbits compared to rodents?
What joint on the face is flexible to allow rostral, caudal and lateral movement?
Masseter muscles are enlarged.
Temporalis smaller on top of head.
Rabbit masseter does not insert on the rostral nose so no slip through the infraorbital foramen.
Temporomandibular joint is flexible.
What is caudally in the tongue?
Why is intubation difficult in the rabbit?
What separates the cheek teeth from the oropharynx?
Lingual torus.
Narrow oropharynx and small glottis makes intubation difficult.
Cheek folds separate cheek teeth from oropharynx.
What name given to part of tooth already erupted above gumline?
What name given to part of tooth below gumline and not yet erupted?
Occlusal surface and crown.
Reserve crown.
What features of the diet may be part of dental issues?
What type of disease could affect dentition and what may it cause?
What effects occur on the occlusal surface? What effects occur within the roots?
What does epiphora mean?
Not enough fibre, inappropriate levels of calcium and/or phosphorus
Metabolic disease may affect calcium and phosphorus levels within the body.
Occlusal surface: spurs forming, stepping, curling of incisors in strange directions and do not appose properly.
Reserve roots: grow in wrong direction and grow down into the mandibular bone (lower cheek teeth) and cause osteomyelitis, root of lower incisors can affect roots of cheek teeth by growing caudally into their direction, upper incisor roots can grow ventrally into oral gravity and produce abscesses, roots of upper cheek teeth could grown dorsally into the nasal turbinates (could affect lacrimal duct and it’s drainage, causing epiphora) or orbital cavity.
Epiphora = increased tear production.
