dentistry

1. dentistry Presented by Dr. Abdelhaleem H. Elkasapy

4. Two types of tooth 1- temporary or deciduous tooth 2- permanent teeth Incisor canine cheek (PM&M)

5. Tooth consists of • Crown : part of tooth projecting above the gum and covered by the enamel • Root : part embedded in the bony cavity of the jaw (alveolus) and covered by cement • Neck : covered by gum and present in between

7. The surface or the tooth directed toward • Lips labial surface • Cheek buccal surface • Tongue lingual surface • Neighbouring Tooth contact S • Tooth of opposite jaw masticcatory S

8. Teeth examination • Case history • Eating habits of the affected animals • Quidding of the food • Large amount of saliva in manger • Halitosis • Presence of large amount of in-digestable grains in the stool • X-ray • Oroscopy

10. I- developmental abnormalities A- abnormal number of teeth a- anodentia b- oligodentia c- polyodentia B-abnormal position of teeth 1-diastasis dentium 2-brachygnathism (parrot mouth), overbite 3- prognathism (pig mouth), under bite

11. II- irregular wear of the teeth 1- sharp teeth (sharp enemal points) 2- Step-formed mouth 3- smooth table mouth

12. III- disease of the teeth 1- fracture of the teeth 2-dental tartar 3- dental caries 4- pulpitis 5- alveolar periostitis 6- dental fistula

13. I- developmental abnormalities 1- anodentia: complete absence of the teeth 2- oligodentia: decrease number of teeth

14. 3- polyodentia: (supernumerory teeth) Presence of an additional number of the teeth, mainly in the incisor set. The condition is mostly found in cases One or more of the deciduous teeth are not shed out after eruption and established of the permanent ones TTT: extract the extra teeth for cosmetic reasons and avoid its complications

16. B-Abnormal position of the teeth 1- diastasisdentium: presence of space between two neighbouring teeth Cause : failure in the position torsion of the teeth accompanying polyodentia Ttt: extraction of one of the neighbouring tooth to widen the space and prevent the food particles to be loddged

17. Brachygnathism ( parrot mouth) • Congental • Upper jaw is longer than the lower • TTt: frequent shortening of the lower incisors

19. 3- prognathism (pig mouth) • Lower jaw is longer than the upper one • Ttt: the superior incisor should be shortened periodically

20. II- irregular wear of teeth 1- sharp enamel point: (sharp teeth): Sharpness and increase in the length of the buccal borders of the upper cheek teeth and lingual borders of the lower ones. Symptoms : Painful mastication Food accumalation Quidding of the food Indigestion

21. Ttt :rasp by tooth rasp

22. 2- step-formed mouth • Condition of the cheek teeth become unequal in height • Occur due to absence of the opposite cheek teeth • Cut the elongated teeth to the level of the table surface

23. 3- smooth table mouth • Teeth are smooth • Observed in old ages Ttt :-the affected animals are supplied with easily masticated food bran mash

24. III- disease of the teeth 1- fracture of the teeth:- Direct violence as kick or accident Ttt : - Crown : smoothing • Complete fracture reach to the level of the pulp cavity extract the tooth - Crown absent repulsion

26. Dental tartar (odento-lithiasis) • It is the deposition of grayish brown deposit on the tooth near the gum • It is firm and smooth layer of calcium phosphate and carbonate

27. Thank You