The document discusses extraction of teeth, including indications for extraction such as nonvital pulps, severe periodontitis, impacted teeth, supernumerary teeth, and retained deciduous teeth. It describes types of impacted teeth and causes. Local effects of impacted teeth include decay of adjacent teeth, root absorption, neuralgia, and infections. Diagnosis involves panoramic dental films. Contraindications and complications of extraction are also outlined.

1. Extraction of Teeth 1 Wang Yin Stomatology Department , General Hospital affiliated to Tianjin Medical University

3. Indication (1) foci of infections nonvital pulps or pulpitis severe periodontoclasia #4. Severe Periodontoclasia not treatble by apioectomy interfering with the placement of restorative appliances not restorable by operative dentistry impacted teeth #5. Impacted Teeth 2

4. Severe Periodontoclasia

5. Impacted Teeth A tooth is spoken of as being impacted when its eruption is partially or wholly obstructed by bone or some other teeth. 3

6. Mesialclination impaction Distalclination impaction Vertical impaction Horizontal impaction Inverted impaction Buccalclination impaction Lingualclination impaction 4 Impacted Teeth

7. Etiology of Impacted Teeth Acute infectious fevers of childhood Inflammation of the peridental membrane Severe traumatism to the jaws Ankylosis of the mandibular joint Early extraction of deciduous teeth 5

8. Local Effects of Impacted Teeth decay of the front tooth #9. Decay of Front Tooth absorption of the root of the front molar neuralgia pericoronal infection #10. 幻灯片 10 pericoronal abscess cellulitis #11. Submasseteric Space Cellulitis Osteomyelitis #12. Diagnosis of Impacted Teeth 6

9. Decay of Front Tooth #8. Local Effects of Impacted Teeth

10. 7 Pericoronal Infection #8. Local Effects of Impacted Teeth

11. Submasseteric Space Cellulitis #8. Local Effects of Impacted Teeth

12. Diagnosis of Impacted Teeth Pantomogram Dental film 9

13. Pantomogram

14. Pantomogram

15. Indication (2) supernumerary teeth #16. Supernumerary Teeth retained deciduous teeth #22. Retained Deciduous Teeth #15. Indication (2) fractured crown malposed teeth #23. Malposed Teeth #15. Indication (2) roots #24. 幻灯片 24 traumatizing soft tissues #26. Contraindications of the Extraction of Teeth 10

16. Supernumerary Teeth

17. Supernumerary Teeth

18. Supernumerary Teeth

19. Supernumerary Teeth

20. Supernumerary Teeth

21. Supernumerary Teeth #15. Indication (2)

22. Retained Deciduous Teeth #15. Indication (2)

23. Malposed Teeth #15. Indication (2)

24. 11 Roots

25. 12 Roots #15. Indication (2)

26. Contraindications of the Extraction of Teeth 13

27. Local Contraindication Acute infection with an uncontrolled cellulitis acute pericoronitis acute infectious stomatitis malignant disease radio therapy (osteoradionecrosis) 14

28. Systemic Contraindication diabetes cardiac disease blood dyscrasias debility disease steroid deficiency fever of unexplained origin nephritis pregnancy or menstruation senility 15

29. Complication loosening of adjacent teeth fracture of adjacent teeth and restorations fracture of the buccal or labial plate teeth or roots into the maxillary sinus injury to the inferior alveolar nerve postoperative hemorrhage postoperative pain dry soket ecchymosis 16

30. Postoperative Hemorrhage’ leading cause patient’s manipulation of the wound foreign body in the socket sharp bone margins and fractured soket walls excessive granulation tissue hypertension clotting deficiency or vascular disorder 17

31. Instrument Forceps Elevator Chisel Mallet Bur goto the movie 18

32. SEE YOU 19