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HORSE DENTISTRY Veterinary dental nursing procedures HORSE DENTISTRY.

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Presentation on theme: "HORSE DENTISTRY Veterinary dental nursing procedures HORSE DENTISTRY."— Presentation transcript:

1 HORSE DENTISTRY Veterinary dental nursing procedures HORSE DENTISTRY

2 5888H - Veterinary Dental Nursing Horse dentistry

3 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Dental formula Deciduous 2 ( I 3/3, P 3/3 ) = 24 Permanent 2 ( I 3/3, C 1/1 P 3-4/3 M 3/3) =

4 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Teeth change throughout life Crown erupts slowly –Hypsodont –Neither open rooted (Elodont) nor closed rooted Roots close slowly

5 HORSE DENTISTRY 5888H - Veterinary Dental Nursing

6 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Crown erupts very slowly

7 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Canine & Wolf teeth diastema

8 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Diastema A large gap between the teeth

9 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Incisor wear

10 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Aging Based largely on incisor wear –Have to consider other factors besides groove and wear patterns –Diet etc

11 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Dental star = Receding pulp

12 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Hook & Galvaynes groove Upper I3

13 HORSE DENTISTRY 5888H - Veterinary Dental Nursing

14 HORSE DENTISTRY 5888H - Veterinary Dental Nursing 4 weeks

15 HORSE DENTISTRY 5888H - Veterinary Dental Nursing 4-6 weeks

16 HORSE DENTISTRY 5888H - Veterinary Dental Nursing 6-9 mths

17 HORSE DENTISTRY 5888H - Veterinary Dental Nursing 2 ½ years

18 HORSE DENTISTRY 5888H - Veterinary Dental Nursing 3 ½ years

19 HORSE DENTISTRY 5888H - Veterinary Dental Nursing 4 ½ years

20 HORSE DENTISTRY 5888H - Veterinary Dental Nursing 6 years

21 HORSE DENTISTRY 5888H - Veterinary Dental Nursing 7 years

22 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Foals Acquire teeth – first week By 9 months full set of baby teeth First adult molars – 9-12 months Second molars – 2 years Adult central incisors –erupt at 2.5 years First PM ( wolf teeth) – erupts 2.5 years Second PM – erupts 2.5 years Third PM – 3 years Lateral incisors and third molar – 3.5 years Corner incisors and forth PM and Canines = 4.5 years 5 years complete set of permanent teeth

23 HORSE DENTISTRY 5888H - Veterinary Dental Nursing

24 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Adults Galvaynes groove – on the surface of upper corner incisor 10 years – groove appears 15 years – half way down tooth 20 years – present entire length of tooth 25 years – groove begins to disappear from gum line first 30 years – groove gone

25 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Infundibulum The surface ( table ) of the incisor crown has a marked depression called the infundibulum Covered by enamel ( as is the crown and a part of the root ) Hence when the tooth wears 2 rings of enamel are seen an outer and inner ring

26 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Wear and Growth The occlusal surface of the horses teeth are in constant wear and the tooth is continually erupting from the socket Thus at successive periods of time, at first the crown, then the neck and finally the root are in wear

27 HORSE DENTISTRY 5888H - Veterinary Dental Nursing

28 HORSE DENTISTRY 5888H - Veterinary Dental Nursing

29 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Horse molars Grinding Large flat surface Grinding causes the cementum and dentine to wear faster than enamel causing enamel ridges which provide a self – sharpening surface Lower jaw narrower than upper – results in uneven wear Outside border of upper teeth and inside border of lower teeth can develop sharp spikes which need to be filed ( rasped ) called floating

30 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Malocclusions Parrot mouth, sow mouth Maxilla too wide All lead to sharp edges Require regular floating

31 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Parrot mouth

32 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Abnormal wear Cause hooks, points, sharp edges Wave mouth Step mouth – sudden change in height of a tooth, usually when a tooth is lost Treatment floating

33 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Wave Mouth

34 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Step Mouth

35 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Sharp Points

36 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Sharp Points

37 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Teething Dental caps – retained deciduous cheek teeth, sharp, cut, trap food, bacterial overgrowth, periodontal disease and excessive salivation Wolf ( first PM )- usually in maxilla, can be removed without GA, to prevent interferance with the bit, usually done at months old Canine teeth may be absent in mare, may grow and traumatize opposite arcade or interfere with bridle, rasp down Periodontal disease Visible swellings occur along the mandible of young horses up to 4 years of age, hard, painless,cause no problems. Theses structures are enlarged dental alveoli, characterised by periapical by periapical radiolucency, associated with pressure Atrophy of the bone. They become smooth as the horse grows older and require no treatment

38 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Wolf Teeth Small teeth located in front of the lower second premolar –Short roots –A horse may have one, two, or none –Often removed by vets to prevent pain or interference from a bit (bit pulls lips onto tooth causing pain and ulceration)

39 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Pulling teeth Tongue pulled out to side

40 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Rasping = Floating Rasping sharp points off teeth –Mostly required in stabled horses Pasture grit helps grind teeth

41 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Floating requires Mouth Gag

42 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Horse dental gear

43 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Float & Rasp

44 HORSE DENTISTRY 5888H - Veterinary Dental Nursing Floating teeth

45 HORSE DENTISTRY 5888H - Veterinary Dental Nursing The End


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