Test 4: 64 equine mouth

Question 1

what are some diff for horse with unilateral nasal discharge

Answer 1

• dental disease with 2nd sinusitis
• paranasal sinus cyst
• cancer
• 1° bacterial sinusistis
• guttural pouch empyema
• strangles- retropharyngeal LN abcess (step equi equi)

Question 2

trephination of a tooth

Answer 2

make hole in jaw and push tooth out, needs to be filled after with plaster-of-paris

Question 3

Answer 3

Question 4

different teeth for different tasks- incisor, canine, premolar, molar

Answer 4

heterodonty

Question 5

baby teeth replaced by 2nd set of teeth

Answer 5

diphyodonty

Question 6

multiple succession of teeth

Answer 6

polyphyodonty

Question 7

teeth implanted in sockets arranged along the margin of the jaw

Answer 7

thecodont

Question 8

the space between teeth

Answer 8

diastema

Question 9

reserve crown for gradual extrusion in herbivores

Answer 9

hypsodont

Question 10

low crowned teeth for soft diets (primate, dog, cat)

Answer 10

brachydont

Question 11

crowns with blunt cusps for crushing- pigs

Answer 11

bunodont

Question 12

deciduous dental formal for horses

Answer 12

[I 3/3; C 0/0; PM 3/3; M 0/0] x 2 = 24 teeth
* No deciduous canines, first premolars or molars

Question 13

permanent dentition formula for horses

Answer 13

[I 3/3; C (1)/(1); PM 3(4)/3(4); M 3/3] x 2 = 36 –44 teeth.

• Up to 11 teeth in each dental arcade
• Supernumerary teeth may also be present - uncommon
• Canines are typically absent in mares
• First premolar teeth - wolf teeth - commonly absent.
• When present – 1st premolar teeth usually found in maxilla and rarely the mandible.
• Cheek teeth - collective term for the 6 teeth - premolars 2-4 & molars 1-3 in each arcade

Question 14

when do all horse teeth come in

Answer 14

5 years old

Question 15

numbering system for upper right

Answer 15

100 quadrant

Question 16

numbering for upper left

Answer 16

200

Question 17

numbering for lower left teeth

Answer 17

300 quadrant

Question 18

numbering for teeth in lower right

Answer 18

400 quadrant

Question 19

numbering system for deciduous horse teeth

Answer 19

500, 600, 700, 800

clockwise looking at horse starting with upper right

Question 20

when should specific teeth for horses come in

Answer 20

Question 21

dentin is what

Answer 21

pale yellow, calcified tissue

found inside tooth

secondary dentin: laid down over dental (pulp) cavity subocclusally and protects pulp horns and tissue being exposed from tooth wear

Question 22

— is the most dense and brittle substance in the body

Answer 22

enamel

Question 23

enamel is made of

Answer 23

cyrstalline mineral matrix

Question 24

infundibula

Answer 24

during development, enamel invaginates occlusal surface- incisors and 2 invaginations maxillary cheek

Question 25

cement of teeth

Answer 25

matrix like bone covers toot and body of teeth : **peripheral cement** partially fills infundibula: incisor teeth and maxillary cheek teeth- **infundibular cement**

Question 26

--- supplies connective tissue, vessels, nerves and lymphatics to teeth

Answer 26

pulp

Question 27

how many pulp horns in horses

Answer 27

**Equine** incisors =1 or 2 pulp horns - 2 is more common) cheek teeth = 5–8, depending on tooth **canine and wolf teeth** = single pulp horn

Question 28

what horse teeth have single root

Answer 28

incisors canines wolf teeth

Question 29

which horse teeth have 2 roots

Answer 29

mandibular cheek teeth

Question 30

which horse teeth have 3 roots

Answer 30

maxillary cheek teeth

Question 31

eruption cyst occur when

Answer 31

tooth is developing and erupting will resolve when growing stops? Eruption bumps- both manibles as permanent premolars replace temp (2-5 years old) - regress in 1-2 years

Question 32

maxillary molars and premolar 4 are related to which sinus

Answer 32

maxillary

Question 33

Triadan 111/211 teeth project into ---- sinus

Answer 33

caudal maxillary

Question 34

110/210 teeth are associated with --- sunus

Answer 34

caudal and rostal maxillary sinus and maxillary sinus septum

Question 35

108/109 teeth associated with --- sinus

Answer 35

rostral maxillary

Question 36

dental arcade move --- in relation to sinuses during life of horse teeth

Answer 36

rostally

Question 37

Answer 37

Question 38

why use trephination

Answer 38

remove tooth from maxillary or conchofrontal sinus can culture and lavage

Question 39

what are some common complications of horse tooth extractions

Answer 39

soft tissue damage (infaorbital, facial nerve) delayed healing- portion of tooth remains orosinus or oronasal fistula

Question 40

equine odotoclstic tooth resorption can lead to

Answer 40

hypercementosis treatment: remove all the teeth