Dentition 2

Question 1

hypsodont

Answer 1

long crown tooth

Question 2

radicular vs aradicular

Answer 2

radicular = true root 
aradicular = open rooted, keeps growing

Question 3

horses have

Answer 3

radicular hypsodont teeth

Question 4

ruminants have

Answer 4

brahcydont incisors and canines

radicular hypsodont premolars and molars

Question 5

wolf tooth

Answer 5

in horses - deciduous premolar not shed

occasionally present

Question 6

gap between canines and premolars

Answer 6

bar/diastema

Question 7

ageing of horses teeth

Answer 7

secondary dentine produced by odontoblasts fills pulp cavity 
tertiary dentine (white appearance) 
teeth wear down, exposing secondary and tertiary dentine which are darker

Question 8

which teeth in horses can be used to establish age

Answer 8

incisors

Question 9

dental star

Answer 9

dark area of secondary dentine in pulp cavity

can be used to determine age of horse

Question 10

appearance of horse teeth as they age

Answer 10

dental star appears with age

Question 11

horses cheek teeth

Answer 11

premolars and molars form continuous row in upper and lower arcades
6 on both

Question 12

wear per year on cheek teeth

Answer 12

2-3mm per year

Question 13

diastemata

Answer 13

gap between teeth - leads to build up of food and eventually periodontal disease

Question 14

structure of horse upper cheek teeth

Answer 14

2 infundibula (holes) surrounded by dentine

Question 15

structure of lower cheek teeth horse

Answer 15

infolding of enamel rather than true infundibula, open on the lingual surface

Question 16

which sinus to upper cheek teeth occupy until erupted?

Answer 16

maxillary sinus - overlaps with last 4

Question 17

per os tooth extraction

Answer 17

teeth extracted through oral opening

incisors, wolf teeth, premolars

Question 18

buccotomy

Answer 18

surgical approach through soft tissue structures
removing bone overlying lateral side of tooth
remove premolars

Question 19

repulsion

Answer 19

through skull or mandible
tooth driven out of root using metal punch
removes caudal premolars and molars

Question 20

what must you take care to avoid when approaching upper cheek teeth? superficial structures

Answer 20

infraorbital nerve
parotid duct
dorsal and ventral buccal nerves

Question 21

structures to avoid when approaching upper teeth? deep structures

Answer 21

nasolacrimal duct, infraorbital canal

Question 22

lamina dura

Answer 22

part of alveolar bone that lines the socket

Question 23

rostral dentition ruminants

Answer 23

dental pad instead of upper canine and incisor

lower canine like incisor, used to grip and pull grass, called corner incisor