GALVANO SERAMİK VE METAL SERAMİK ÜÇ ÜYELİ KÖPRÜ PROTEZLERİNİN KIRILMA DİRENÇLERİNİN İNCELENMESİ

Abstract

Diş Hekimliğinde sıklıkla tercih edilen metal seramik restorasyonlara alternatif olarak geliştirilen bir sistem de galvano seramik restorasyonlardır. Bu çalışmada galvano seramik ve metal seramik üç üyeli köprü öncesindeki ve sonrasındaki kırılma dirençlerinin incelenmesi amaçlanmıştır. Yirmi adet metal seramik ve 20 adet galvano seramik köprü protezi 2 alt gruba ayrıldı. On adet metal seramik ve 10 adet galvano seramik köprüye 10.000 kez termal döngü uygulaması ve 100.000 kez yorma testi uygulandı. Yorma testi sonrasında tüm köprü örneklerine Universal test cihazında kırılana kadar kuvvet uygulandı. İstatistiksel değerlendirmeler ANOVA testi ile yapıldı. Sonuç olarak en yüksek ortalama kırılma değeri yorma testi uygulanmayan metal seramik köprülerde bulunurken en düşük ortalama kırılma değeri ise yorma testi uygulanan galvano seramik köprülerde bulundu

Keywords

• Galvano seramik, metal seramik, kırılma direnci

Investigation of Fracture Strength of Galvano Ceramic, Metal Ceramic Three Unit Bridges

Abstract

Galvano ceramic restoration is an alternative improved system to metal ceramic restoration frequently preferred in dentistry. The aim of this study was to investigate fracture strength of galvano ceramic and metal ceramic three unit bridges before and after fatigue test. Twenty galvano ceramic and 20 metal ceramic bridges were divided into subgroup. As a fatigue test 10000 thermal cycling and 100000 mechanical loading were applied to ten galvano ceramic and ten metal ceramic bridges. After fracture test was carried out on all of the bridge sample by universal testing machine. Fort he statistical analyse of the study results ANOVA was used. Finally maximum mean fracture strength was non fatigued metal ceramic bridges and minimum mean fracture strength was fatigued galvano ceramic bridges

Keywords

• Galvano ceramic, metal ceramic, fracture strength

References

1. Baydaş S. Kuron-Köprü Potezleri, Atatürk Üniversitesi Diş Hek. Fak. Yayınları, Erzu- rum, 2005: 139-145.
2. Zaimoğlu A, Can G. Sabit Protezler, Ankara Üniversitesi Diş Hekimliği Yayınları, Anka- ra, 2004: 110-114.
3. Craig R, Ward M. Restorative Dental Materials (Tenth Edition), Mosby Year Book Inc, USA, 1997: 409-415.
4. O’Brien WJ. Dental materials and their selection. 2nd ed. Canada: Quint Pub Co Inc; 2002.
5. Raigrodski AJ, Malcamp C, Rogers WA. Electroforming technique, J Dental Technol 1998; 15: 13-16.
6. Vence B. Electroforming technology for galvanoceramic restorations, J Prosthet Dent 1997; 77: 444-449.
7. Traini T. Electroforming technology for ceramometal restoration, Quintessence Dent Technol 1995; 18: 21-28.
8. Behrend F. Gold Electroforming System: GES Restorations, J Dent Technol 1997; 14: 31-37.

9. Dölger J, Gadau C, Rathmer R. Treatment behavior and complete-mouth rehabilitation using AGC crowns: A case report, Int J Perio Rest Dent 2001; 21: 361-369.
10. Kheradmandan S, Koutayas SO, Bernhard M, Strub JR. Fracture strength of four different types of anterior 3- units bridges after thermo-mechanical fatigue in the dual- axis chewing Simulator. J Oral Rehabili 2001; 28: 361-369.
11. Horn V, Kappert HF. Strength of three unit posterior galvano bridges. Dtsch Zahnarztl 1992; 47: 597-599.
12. Kelly JR. Dental ceramics: current thinking and trends. Dent Clin N Am 2004; 48: 513- 530.
13. Hondrum SO. A review of the strength properties of dental ceramics. J Prosthet Dent 1992; 67: 859-864
14. Presswood RG, Skjonsby HS, Hopkins G, Pendleton M. A Base Metal Alloy for Ceramometal Restoration. J Prosthet Dent 1980; 44: 624-629.
15. Setz J, Dayhl J, Weber H. The marginal fit of cemented galvanoceramic crowns, Int J Prosthodont 1989; 2: 61-64.
16. Buso L, Neisser MP, Bottino MA. Evaluation of the marginal fit of electroformed copings in function of the cervical preparation, Ciens Odontol Bras 2004; 7(1): 14-20.
17. Holmes JR, Pilcher ES, Rivers JA, Stewart M. ceramometal crowns, J Prosthodont 1996; 5: 111-114. of electroformed
18. Strub JR, Beschnidt SM. Fracture strength of 5 different all ceramic crown systems. Int J Prosthodontics 1998; 11: 602-609.
19. Rosentritt M, Plein T, Kolbeck C, Behr M, Handel G. In vitro fracture force and marginal adaptation of ceramic crowns fixed on natural and artificial teeth. Int J Prosthodont 2000; 13: 387-391.
20. Scherrer SS, Rijk WG. The fracture resistance of all ceramic crowns on supporting structures with different elastic moduli. Int J Prosthodont 1993; 6: 462-467.
21. Lee SK, Wilson PR. Strength of all ceramic crowns with varying core elastic moduli. Aust Dent J 2000; 45: 103-107.
22. White SN, Li ZC, Yu Z, Kipnis V. Relationship between static chemical and cyclic mechanical fatigue in a feldspathic porcelain. Dent Mater 1997; 13: 103-110.
23. Bream M, Lambrechts P, Vanherle G. Clinical relevance of laboratory fatigue studays. J Dent 1994; 22: 97-102.
24. Yoshinari M, Derand T. Fracture strength of all-ceramic crowns, Int J Prosthodont 1994; 7: 329-338.
25. Dewji H, Drummond J, Fadavi S, Punwani I. Bond strength of Bis- GMA and glass ionomer pit and fissure sealent using cyclic fatigue. Eur J Oral Sci 1998; 106: 594-599.
26. Beschnidt SM, Strub JR. Evaluation of the marginal accuracy of different all ceramic crown systems after simulation in the artificial mouth. J Oral Rehabil 1999; 26: 582-593.