JVD 2020 #4 Dental Pathology of the Domestic Pig (Sus Scrofa Domesticus); Smith, Rawlinson Flashcards
Porcine deciduous dental formula
2( i3/3, c 1/1, p 3/3)
313/313
Porcine permanent dental formula
and description
2 (I 3/3, C 1/1, P 4/4, M3/3)
diphyodont, heterodont and brachydont except the canines
3143/3143
Describe the terminology for the male canine tooth (tusk)
Aradicular, hypsodont and elodont
Terminology for the female canine tooth
radicular, hypsodont with apical closure between 2-3 yrs age
Age for complete eruption and root development
29-30 months ~2.5yr
Tooth root numbers for the domestic pig
I, C, 1st PM= 1 root
PMs= 2 roots
M= long, slender, overlapping roots. M1 & M2 have 4 roots. M3 5-6 roots
Special features of the skull and oral cavity in pigs compared to dogs/cats
extremely long, slender maxilla and mandible
thick layer of adipose tissue
restricted oral aperture
prominent , purple-colored parotid papilla
How many pigs in the study had periodontal disease?
20 of 23 pigs (87%)
Many pigs had multiple stages of PD associated with different teeth in the oral cavity. How many had stage 3 and stage 4?
Stage 3= 6/20 (30%)
Stage 4= 3/20 (15%)
These led to severe mucogingival defects in 6 pigs (6/9, 67%)
How many pigs had missing teeth?
21 of the 23 pigs (91%) were missing teeth. Most common was the 1st premolar.
What percentage of pigs had partially erupted teeth (beyond age of anticipated eruption)?
74%.
No partially erupted PMs
What percentage of pigs had unerupted teeth? What was most common unerupted tooth?
52% (12/23); the incisors were most common
How many pigs had persistent deciduous teeth?
10 pigs (43%)
How many pigs had open apices beyond expected for age (not including male canines/tusks)
13 (57%)
What was the most common anomaly?
Missing teeth (91%), mainly affecting the first premolar
