It's an introduction about Conservative Dentistry which include cavity classes and endodontic therapy.

1. Conservative approach Prepared by Dr. ManalFarouk Umm Al Qura University Faculty of Dentistry

2. operative dentistry is the art and science that deals with diagnosis, treatment, and prognosis of defects of teeth that don't require full coverage restorations for correction

4. conservative treatment starts first with the removal of decay and then replacement the missed part with a suitable restorative material

6. caries removal is done through either hand instruments that remove the soft caries or rotary instruments that remove the hard caries

12. after caries removal the cavity is prepared according to certain criteria or specifications that classify the cavity into 6 classes

13. class 1 that includes only the occlusal surface of posterior tooth

14. class 2 includs the proximal surface of posterior teeth

15. class 3 includes the proximal surface of anterior teeth

16. class 4 includes the proximal surface of anterior teeth including incisal angel

17. class 5 includes the gingival third of the tooth

18. class 6 includes the cusp tip of posterior teeth

19. then cements materials are applied to prevent thermal effects, chemical irritations, and electrical stimulations

20. then cements materials are applied to prevent thermal effects, chemical irritations, electrical

21. the selected final restorative material are then applied

23. Endodontic therapy

24. Pulp is the most inner structure of the tooth it is composed of soft tissue consisting of nerves, blood vessels, and cells. It has many functions

27. pulp functions : the pulp performs 5 main functions some formative, and others supportive Induction Pulp participates in the initiation and development of enamel Formation Odontoblasts form dentin these highly specialized cells participate in dentine formation

28. Nutrition Pulp supplies nutrients that are essential for dentin formation Defense: Odontoblasts form dentin in response to injury, particularly when the original dentin thickness has been reduced due to caries, attrition, trauma, or restorative procedures

29. Sensation: Pulp transmits neural sensation mediated through enamel or dentin to the higher nerve centers. These stimuli are usually expressed clinically as pain

30. Indications Pulp exposure Periapical lesion Pulp death ( trauma) Intentional endodontic treatment

31. Diagnosis Thermal pulp tester: a) cold b) hot Electrical pulp tester Percussion test Radiography

32. Procedures Access preparation: differs with the difference of tooth anatomy Cleaning and shaping: mechanical or chemical Obturation: guttapercha or silver cones Follow up: during the first two years