2. Menu First page First page 1.IntroductionIntroduction 2.Why the glass ?Why the glass ? 3.ZX-27 A GAS Indication and fields of utilization-27 A GAS Indication and fields of utilization 4.IndicationsIndications 5.Principles of ZX-27 A GASPrinciples of ZX-27 A GAS 6.ContraindicationsContraindications 7.Clinical testsClinical test 8.Patological studiesPatological studies 9.Static analysisStatic analysis 10.Radiology 11.Description of the employed ZX-27 A GAS 12.Practical samples

4. Menu First page First page Why the glass? Meltablity Workability Rigidity Chemical resistance

5. Menu First page First page Main characteristics of ZX-27 glass Melting temperature: 1560-1600 C Pressure strength: 120-150 Mpa/kp/mm2 Acid resistance: Hydrolitic Class1. Alkaline solubility: Hydrolitic Class 2.

6. Menu First page First page Indications floated own block tooth place of glass block in raft amount of fixed raft Unilateral status Bilateral status In combination with implants Supporting arching of large splinting bridges Kennedy 3 Kennedy 2 Kennedy 4 Kennedy 1 Kennedy 2

7. Menu First page First page Principles of ZX-27 Attractive Glass Abutment System the most important is to have a firm and pronounced alveolar ridge at the place of future ZX-27 glass abutments, unwritten rule: the more proper pillar teeth are ground meszially, the more missing teeth may be replaced distally (i.e. when replacing 5 and 6, it is ideal to grind 3 and 4; 5 will make the pontic and 6 will be the glass abutment), glass abutment is always the most distal part of the bridge with shortened dental arch (Kennedy 1, Kennedy 2), there must be at least one 1st class pillar among the prepared own teeth; the more 1st class ground pillars, the better the result, glass abutment must have his antagonist to renew occlusal relations and denture function

8. Menu First page First page Attractive Glass Abutment System: Contraindications: unstable flabby alveolar ridge (5-8 mm side movements), insufficient alveolus height and widths with extensive bone resorption, very narrow alveolus forming a narrow ridge created partially by submucous tissue, insufficiently healed alveolus after extractions,

9. Menu First page First page Clinical test  Gingiva changes of people having glass abutment bridge  Cytological, histological, element analysis examinations 4  Professional report related to the use of borosilicate glass of ZX27 fantasy name in special dental bridges 12  In vitro heamolysis test to determine haemolytic activity of materials being in contact with bone and soft tissues 14  In vitro haemolysis test to determine the toxicity of ZX-27 Attractiv Glass abutment for the purpose of approval by ORKI 15  Opinion on using ZX-27 borosilicate glass for the purpose of denture for approval by ORKI  Prosthesis supported by ZX-27 Attractive Glass Abutment System and comparative strenght test of non-supported, open-ended bridge, performed by finite element method, for ORKI licence

10. Menu First page First page Cytological smears from the mouth- wash fluid mainly contained superficial, mature cells. In 17 sears of 3 patients with glass abutment amongst the 67 cytological specimen of 9 patients were found a few keratinized but otherwise typical cell beside the large number of non keratinized epithelial elements. Typical keratinized stratified epithelium was present on the surface of the gum under the glass abutment. Keratinization corresponded to parakeratosis and hyperkeratosis histologicaly. There were no mitotic figures amongst the epithelial cells, layers of the epithelium presented typical maturation tendency towards the surface. 1 2 3 P a t o l o g y

11. Menu First page First page The applied fixative poorly fixed tissue glycogen, however the cytoplasm of the cells contained abundant glycogen. The applied fixative poorly fixed tissue glycogen, however the cytoplasm of the cells contained abundant glycogen also noticed, although the keratinized layer seemed to be thinner compared to those under the glass abutment.. 4 5 6

12. Menu First page First page

13. Menu First page First page S t a t i c a n a l y s i s

14. Menu First page First page Modeling of vertical direct stress potential incase of glass abutment support. Load:100 N (vertical force) Modeling of vertical direct stress potential incase non-supported open- ended bridge. Load:100 N (vertical force)

15. Menu First page First page Three dimensional model of glass-abutment support. Load:100 N (vertical force) Three dimensional model of non-supported bridge. Load:100 N (vertical force)

16. Menu First page First page Model of glass abutment supported bridge force shift in case of 100 N vertical force. Model of free end bridge force shift in case of 100 N vertical force.

17. Menu First page First page Dr. Gergely István Dr. Gergely István R a d i o l o g y

18. Menu First page First page Bone structure beneath the glass abutment. Position of the glass abutment within the mandible.

19. Menu First page First page Condition of the bone structure at time of the first investigation, 1 year after oral implantation.

20. Menu First page First page Value of mandible‘s calcium content immediately in front of the glass abutment on the left, at time of the second investigation, 4 years after oral implantation. Value of mandible‘s calcium content under the glass abutment on the left, at time of the second investigation, 4 years after oral implantation.

21. Menu First page First page Value of the mandible‘s calcium content in front of the glass abutment on the right, at time of the second investigation, 4 years after oral implantation. Value of the mandible’s calcium content under the glass abutment on the right, at time of the second investigation, 4 years after oral implantation.

22. Menu First page First page Description of the employed ZX-27 Attractive Glass Abutment System

23. Menu First page First page Glass abutment can be purchased in two different sizes „S“ and „L“ in six or twelve pieces of shipment. Selection of status corresponding glass sizes and insertion into the clamping apparatus

24. Menu First page First page Heating of the glass abutment until it be red and its outlines begin to deform. Heated and melted glass abutment is pressed by continuously increasing 0,8 N force into the marked place. We wait until it is solidified then put into ceramic coooling coverlet.

25. Menu First page First page Polishing of the glass with the help of diamond processing equipment. Saddle-like accurate adjustment of the glass abutment to the plaster cast..

26. Menu First page First page Formation of wax cap on the glass abutment with wax immersion. Fixation of the glass abutment onto the model with hot cervical wax.

27. Menu First page First page Prepared glass abutment works on the cast. The prepared work and the glass abutment on the cast before sticking. Cementation

28. Menu First page First page PRACTICAL SAMPLES

29. Menu First page First page

30. Menu First page First page

31. Menu First page First page

32. Menu First page First page

33. Menu First page First page

34. Menu First page First page

35. Menu First page First page

36. Menu First page First page

37. Menu First page First page

38. Menu First page First page

39. Menu First page First page

40. Menu First page First page

41. Menu First page First page

42. Menu First page First page

43. Menu First page First page Patient No. 1

44. Menu First page First page Patient No. 1

45. Menu First page First page Patient No. 1

46. Menu First page First page Patient No. 1

47. Menu First page First page Patient No. 1

48. Menu First page First page Patient No. 1

49. Menu First page First page Patient No. 1

50. Menu First page First page Patient No. 1

51. Menu First page First page Patient No. 2

52. Menu First page First page Patient No. 2

53. Menu First page First page Patient No. 2

54. Menu First page First page Patient No. 2

55. Menu First page First page Patient No. 2

56. Menu First page First page Patient No. 2

57. Menu First page First page Patient No. 3

58. Menu First page First page Patient No. 3

59. Menu First page First page Patient No. 3

60. Menu First page First page Patient No. 3

61. Menu First page First page Patient No. 3

62. Menu First page First page Patient No. 4

63. Menu First page First page Patient No. 4

64. Menu First page First page Patient No. 4

65. Menu First page First page Patient No. 4

66. Menu First page First page Patient No. 4