Presentation is loading. Please wait.

Presentation is loading. Please wait.

Fixed appliances. Development of orthodontics in china Removable Begg Edgewise Straightwire (pre-adjusted)

Similar presentations


Presentation on theme: "Fixed appliances. Development of orthodontics in china Removable Begg Edgewise Straightwire (pre-adjusted)"— Presentation transcript:

1 Fixed appliances

2 Development of orthodontics in china Removable Begg Edgewise Straightwire (pre-adjusted)

3

4

5

6

7

8

9

10 Bracket Metal Ceramic Plastic

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25 Disadvantages of ceramic brackets The bond is too strong Brittle Too hard High friction

26 Band (1) Buccal and often lingual attachments are soldered or welded. (2) Piror to placement of a band it may be necessary to separate the adjacent tooth contacts. (3) There are different sizes of bands for different sizes of molar. (4) Glass ionomer cement is used for band cementation.

27

28

29

30

31

32 Archwires Stainless steel wire NiTi wire Mutistrand wire

33

34 Round wire: 0.014”,16”,18” Rectangular wire:0.016”x0.022”,et al.

35

36 Sequence From thin to thick From NiTi to stainless steel From round to rectangular

37 First-order bends: horizontal plane Second-order bends: vertical plane Third-order bends: torque

38

39

40

41

42

43

44

45

46

47 Orthodontic adhesives Band cement: glass ionomer, zinc phosphate Bonding adhesive: chemical-cured, light-cured

48 Chemical-cured adhesive One-paste Two-paste

49 A set of bonding adhesive Paste A Paste B Sealant A Sealant B Etching solution

50 Bonding procedure Clean the teeth Etch the teeth paint the sealant mixture paint the paste mixture place the brackets

51

52

53 Auxiliaries Ligatures:steel or elastic Elastic bands:1/8”, 3/16”, 1/4”, 5/16” Elastic chains:close, open, wide The others:expansion screw, headgear, etc.

54

55

56

57

58

59

60

61 Typical treatment procedure Aligning and leveling Space closure and correction of occlusal relationship Finishing Retention

62

63

64

65

66

67


Download ppt "Fixed appliances. Development of orthodontics in china Removable Begg Edgewise Straightwire (pre-adjusted)"

Similar presentations


Ads by Google