Equine Dentistry Flashcards
what are the two ways of naming teeth?
triadan system and standard
what is 4,5, 6-8, and 9-11 in triadan system?
4 - canine
5 - wolf tooth
6-8 - premolar
9-11 - molars
what is the first premolar?
wolf tooth
what gender of horses sometimes do not have wolf teeth or canines?
mares
how are deciduous teeth labeled?
500-800
what teeth do not have deciduous teeth?
molars
define apical
toward the root
define buccal
toward cheek
define coronal
toward tooth crown
define distal, posterior, or caudal
toward the back
define interproximal
between adjacent teeth
define labial
toward lips
define lingual
toward tongue in lower arcade
define marginal
near gingival margin
define occlusal, occlusing, or masticating surface
contact points of opposing teeth
define palatal
toward the palate in upper arcade
define rostral, mesial, or anterior
toward front
define hypsodont - are horses this?
continually erupting
yes
At what rate does each age horse erupt tooth per year?
4,15,20,30 yrs
4 yr - 4mm
15 yr - 2mm
20 yr - 1mm
30 yr - none
what are teeth composed of?
infolded enamel, cementum, and dentine
when do deciduous incisors erupt?
when do adult incisors and canines erupt?
01’s - 2.5 yrs
02’s - 3.5 yrs
03’s - 4.5 yrs
04’s - 5 yrs
which are adult teeth and which are deciduous teeth?
baby teeth are triangular
what is this? It is non painful and firm
eruption bumps
erupting teeth on young horse mandibles
when do adult premolars and molars erupt?
when do deciduous premolars erupt?
at birth
what is the arrow pointing to?
galvayne’s groove
when does galvayne’s groove appear and where?
10yrs
103 and 203
what age is the horse based on the images?
what is circled?
cups
when do cups disappear on horse incisors?
8yrs
when does a cup become an enamel spot/mark/ring? when is the enamel ring gone?
8yrs, gone by 12-18yrs
when do dental stars appear and where?
8yrs first incisor
what is the only dental structure seen after 15-18 years?
dental star
what are the shape teeth when young, 10, 15, and 20?
young - transverse
10 yr - round
15 yr - triangle
20 yr - rectangular
what is a normal grind for a horse jaw?
75%
1-1.5 incisors
what drugs can be used for the sedation of a standing horse? At what dose?
Xylazine - 150mg, 1.5cc
Romifidine - 15mg, 1.5cc
Detomidine - 5mg, 0.5cc
Butorphanol - 3-5mg, 0.3-0.5cc
what are the reversal agents for sedation?
Yohimbine - 5-10mg, 2.5-5cc
Tolazoline - 250-500mg, 2.5-5cc
Are reversal agents often used for horses?
No
takes away pain control and dont want an over excited/confused horse
what are dental caries?
holes in teeth that are caused by bacteria in the mouth
why do we remove wolf teeth?
05’s = wolf teeth
the bit hits it and can cause irritation/abscess
how do we remove wolf teeth?
local infiltration of block, burgess extractor, elevator, and dental forceps
when do you float the occulusal surface?
when there is molar pathology and it is needed to address the malocclusion
when do you come back to float more for a molar pathology?
3-6 months
Is this a normal pathology? what is it?
yes, sharp points
what is the unlabeled line?
bit seat
Is this normal pathology? What is it?
yes, incisor hook
what pathology is this?
incisor pathology - ventral curvature
How often should teeth be floated? - young, natural, and geriatric
young - 6-12 months
natural - 12-36 months
geriatric - 12-36 months
what pathology is this?
incisor pathology - diagonal mouth
what pathology is this?
incisor pathology - dorsal curvature
when do we treat incisor pathology?
when the functional occlusion is compromised
want 75% grind
what is the pathology?
overbite
what is the difference between an overjet and an overbite?
a jet is a partial tooth and a bite is an entire tooth
how are overjet/overbites treated?
if very young and severe - wire jaw
otherwise - floating management
what is the pathology?
equine odontoclastic tooth resorption and hypercementosis (EOTRH)
how is EOTRH treated?
removal of teeth - palliative and curative
what pathology is this?
wave mouth
how does wave mouth occur?
109/209 first to erupt and first to wear out/form cups and 308/408 are last to lose caps and last to wear out
what pathology is this?
excessive transverse ridges
how often do excessive transverse ridge patients need floating?
every 6 months
what pathology is this? what teeth is it common on?
hooks
106/206
311/411
what pathology is this? what teeth is it common on?
ramps
306/406
what is the top and bottom pathology?
top - oligondontia
bottom - polyodontia, supernumeary teeth
how is oligondontia and polydontia treated?
oligondontia - adjacent teeth move to fill gap, need more frequent floating
polydontia - if malocclusion then remove
what pathology is this?
step mouth
what does step mouth usually result from?
missing tooth or malocclusion
what pathologies often need floating every 6 months?
excessive transverse ridges
step mouth
what pathology is this?
shear mouth
what pathology is this?
Diastema
what pathology is this?
patent infundibulum
cement-filled, funnel-shaped enamel invaginations in maxillary cheek teeth
what pathology is this?
fractured tooth
what is the difference between a complicated and uncomplicated fracture?
complicated - pulp exposure -> pulpitis
uncomplicated - no pulp exposure
what pathology is this?
oligondontia
what pathology is this?
diastema
what pathology is this?
tooth abscess
when is an infraorbital block used?
maxillary procedures - 06-09
when is a maxillary block used?
entire maxilla blocked
terrifying block - avoid
when is a middle mental block used?
block lower incisors
when is a inferior alveolar block used?
block entire mandibular arcade
what block is each arrow?
left - infraorbital
right - maxillary
what block is each arrow?
left - middle mental
right - inferior alveolar
what agents are used to block?
lidocaine, mepivavaine, bupivacaine
Order the blocking agents in order of longest lasting
lidocaine, mepivavaine, bupivacaine
lidocaine, mepivavaine, bupivacaine
what is the preferred orientation of the horse for tooth extraction?
standing
what can be done to help avoid crown interlocking and increase rotational space when removing a tooth?
partial coronectomy
what can be done to help avoid iatrogenic fracture?
pre-extraction crown restoration
when do you preform a restoration on infundibular caries?
no pulp involvement
when do you preform pulp capping and pulpotomy?
with vital pulp
when do you preform a root canal?
no vital pulp