Black class I. and II. composite fillings Dental matrix systems and its use DR. KÁROLY BARTHA

Transcription

1 Black class I. and II. composite fillings Dental matrix systems and its use DR. KÁROLY BARTHA

2 Black Class I. definition extended fissure sealing 2

3 Black Class II definition MO/OD/MOD 3

4 Limits of the use of composits Not indicated: problems with isolation full contact with opposite tooth bruxism 4

5 Usual Steps of an Composite Restoration Medical history, diagnosis, (X-ray.) Anesthesia Shade selection Cavity preparation Isolation Adhesive technique Inserting and curing the composite Contouring and polishing the composite 5

6 Shade selection Drying and dehydration of the tooth Isolation (before-, color) Applying and curing a small amount of the composite 6

7 Adhesive technique 7

8 Inserting and curing the composite Class I. Class II. 8

9 Disadvantages of the composite Polymerization shrinkage Higher thermal expansion coefficient No adhesion or chemical bond Solution - adhesive technique 9

10 C-factor (configuration-factor) The ratio of bound-to-unbound surface areas Sturdevant s Art &Science of Operative Dentistry 4 th ed. Mosby 10

11 Methods of reducing the polymerization shrinkage Further development of the composite Incremental filling technique Direction of the curing light Method of the curing 11

12 Incremental filling technique Horizontal occlusogingival layering when cavity< 1/3 width of the toot Oblique layering Faciolingual layering Bulk-fill Bio-mimetic Horizontal-split technique Centripetal technique 12

13 Increment technic - occlusogingival layering Wide cavity fracture 13

14 Increment technic - oblique layering 14

15 Increment technic - use of flow composite Better marginal seal Stress-breaker function 15

16 Increment technic - faciolingual layering 16

17 Increment technic - bulk-fill 17

18 Increment technic - bulk-fill 18

19 Increment technic - bio-mimetic 19

20 Direction of the curing light 20

21 Method of the curing Soft start polymerization As near as possible Metal matrix can inhibit Diameter of the light guide Cleanness of the light guide 21

22 22

23 Method of the curing Soft start polymerization As near as possible Metal matrix can inhibit the effect Diameter of the light guide Cleanness of the light guide 23

24 Black Class II. composite fillings 24

25 26

26 When are the matrix systems necessary? Preparation to protect the neighboring tooth Plastic fillings to shape (proximal contact) for replacement of missing wall(s) during the cementation of inlays/onlays 27

27 Expectations - use of matrix system No gap, good seal Proximal contact Higher than the tooth Well fixed Easily removable Transparent Impermeable 28

28 Matrix is usable when There are some place between the teeth If not, we make Horico strip Fast-separation (wedge) 29

29 We use the matrix strip (fast every time) with a wedge 30

30 Use of the wedge To put the matrix strip to the tooth To fix the matrix strip Separation (Bleeding control) To protect the interdental papilla Light transmitting wedge - polymerization 31

31 The use of the wedge Sturdevant s Art &Science of Operative Dentistry 4 th ed. Mosby 32

32 The use of the wedge Sturdevant s Art &Science of Operative Dentistry 4 th ed. Mosby 33

33 The use of the wedge 34

34 Wedges Wooden 35

35 Wedges Plastic Formed Curved (Curvy, VoCo) V-shaped Light transmitting 36

36 During preparation Common metal matrix Special product Matrix Wedge 37

37 Plastic fillings Black Class III. and IV. Root surface fillings Black Class II. 38

38 Front-teeth - Black Class III. Transparent matrix polyester strip 39

39 Hawe Stopsrip 40

40 Front-teeth Black Class IV. Polyester strip Silicone key 41

41 Use in U-shape (from Tuza E.) 42

42 Silicone key (from Tuza E.) 43

43 Cervical fillings cervical matrix Composite GIC 44

44 Cervical fillings 45

45 Black Class II. Dental amalgam metal matrix Composite metal- or plastic matrix 46

46 Matrix + matrix retainer or holder together (wedged) 47

47 Amalgam filling Dental amalgam is condensable - tight proximal contact 48

48 MO or OD cavity Ivory matrix retainer + matrix band 49

49 MOD cavity Conventional matrix retainer with matrix band 50

50 MOD cavity Tofflemire matrix retainer with Tofflemire matrix band 51

51 MOD cavity Tofflemire matrix retainer with Tofflemire matrix band 52

52 Conic matrix band disadvantageous form During finishing proximal contact disappeared Fracture of filling 53

53 Composite filling It could be difficult to achieve a tight proximal contact 54

54 Tofflemire matrix retainer with plastic matrix band 55

55 Lucifix (KerrHawe) 56

56 Special matrix systems AutoMatrix (Dentsply) MaximatPlus (Polydentia) SuperCap (KerrHawe) 57

57 The use of matrices Sturdevant s Art &Science of Operative Dentistry 4 th ed. Mosby 58

58 Special matrix system Walser 59

59 Special matrix systems sectional matrix Palodent / Palodent Plus (Dentsply) Hawe Adapt sectional matrix system (KerrHawe) Quickmat (Polydentia) V-ring (TrioDent) 60

60 Special matrix systems sectional matrix Matrix is formed Ring to fix Forceps 61

61 Special matrix systems sectional matrix V V3 V4 62

62 Special matrix systems 63

63 Special matrix systems rings 64

64 Special matrix systems forceps 65

65 Special matrix systems the use 66

66 Thank you for your attention! 67