Farklı üretim teknikleri ile elde edilen Cr-Co metal-seramik örneklerin bağlanma dayanımının değerlendirilmesi

Amaç: Dört farklı üretim tekniği (döküm, tekrarlanan döküm, CAD-CAM ve seçici lazer sinterleme) ile elde edilen Cr-Co metal seramik örneklerin (n:10) farklı pH ortamlarındaki (pH:2.3 ve pH:6.5) yapay tükrükte farklı bekletme süreleri sonundaki bağlanma dayanımını değerlendirmektir.Gereç ve Yöntemler:Bu çalışmada 4 grupta toplam 200 Cr-Co metal seramik örnek 4 farklı teknik (döküm, tekrarlanan döküm, CAD-CAM ve seçici lazer sinterleme) ile hazırlanmıştır. Ayrıca SEM analizinde kontrol grubu olarak kullanılmak üzere Cr-Co metal alaşım örneklerinden 1’er adet her grup için üretilmiştir. Örnek sayısı her bir grup için n=10 olarak belirlenmiştir. Metal seramik örneklerin iki farklı pH ortamındaki (pH 2.3 ve pH 6.5) yapay tükrükte 15 ve 30 gün bekletilme sonrası makaslama bağlanma dayanımı ölçülmüştür. Her gruptan birer örnek taramalı elektron mikroskobu (SEM) analizi ile yüzey değişikliği ve kırılma morfolojisi açısından değerlendirilmiştir. Bulgular:Bağlanma dayanımı bakımından seçici lazer sinterleme tekniği CAD-CAM ve tekrarlanan döküm tekniğinden daha iyi bulunmuştur. En yüksek bağlanma dayanımı değerini döküm tekniği göstermiştir. 2.3 pH değerinde daha düşük bağlanma dayanımı bulunmuştur. Her iki pH değerinde de 30 günlük bekletme süresinde, 15 günlük bekletme süresine göre daha düşük bağlanma dayanımı sonuçları bulunmuştur.Sonuçlar:Döküm tekniği ilk tercih olmakla birlikte; seçici lazer eritme tekniği, CAD-CAM tekniğine kıyasla bağlanma dayanımı bakımından tercih edilebilir. Ortamın asiditesinin bekletme süresiyle doğru orantılı olarak materyalin direncini azalttığı sonucuna ulaşılabilir. Bu nedenle ani pH değişimlerine karşı metal-porselen ekspoz alanlarının ağızda bekletilmemesi gerektiği düşünülebilir.Anahtar Kelimeler:Seçici lazer sinterleme, metal-ceramic, iyon salınımı, CAD/CAM, bağlanma dayanımı.

Anahtar Kelimeler:

Seçici lazer sinterleme, metal-ceramic, CAD/CAM, bağlanma dayanımı, iyon salınımı

Evaluation of bond strength of Cr-Co metal-ceramic samples produced by different techniques

Background:In this study, the shear bond strength of the metal ceramic samples obtained by 4 different techniques (casting, repeated casting, CAD-CAM and selective laser sintering) were measured at 15 days and 30 days after immersed in the artificial saliva at two different pH (pH:2.3 ve pH:6.5) environments. Methods:In this study, 200 Cr-Co metal ceramic samples in 4 groups were obtained by 4 different techniques (casting, repeated casting, CAD-CAM and selective laser melting). Four Cr-Co metal samples from each group were manufactured for SEM analysis as control groups. Ten samples from each group were determined for all groups (n=10). The shear bond strength of the metal ceramic samples were measured after immersed in artificial saliva at two different pH (pH 2.3 and pH 6.5) for 15 and 30 days. One sample from each group was evaluated by scanning electron microscopy (SEM) analysis in terms of surface change and fracture morphology.Results:In terms of bond strength selective laser sintering technique found to be better than the CAD-CAM and repeated casting technique. The highest bond strength values were found for the casting technique. The shear bond strength was found to be lower at 2.3 pH value. The shear bond strength value was found to be lower for 30 days than 15 days at both pH values. Conclusions:Besides the casting technique determined as the first preference,the selective laser technique can be preferred compared to the CAD-CAM technique in terms of shear bond strength. The acidity of the environment in direct proportion to the immersion period can both decrease the strength of the material. It was concluded that the metal-ceramic exposed areas should not be left in the mouth against the instant pH changes.Keywords:Selective laser sintering, metal-ceramic, ion release, CAD/CAM, bond strength.

Keywords:

Selective laser sintering, metal-ceramic, ion release, CAD-CAM, bond strength,

PDF

___

1. O’Brien WJ. Dental materials and their selection. 3rd ed. Chicago: Quintessence Publishing Co, Inc.; 2002.p. 214–6.2. Li KC, Ting S, Prior DJ, Waddell JN, Swain MV. Microstructural analysis of Co-Cr dental alloy at the metal-porcelain interface: a pilot study. N Z Dent J 2014; 110(4): 138-42. 3. Uçar Y, Gürbüz, GA, Erken O. Diş hekimliğinde lazer sinterizasyon ve diğer tabakalı üretim yöntemleri. Türkiye Klinikleri J Prosthodont-Special Topics 2015; 1(1): 13-22. 4. Lee MY, Chang CC, Ku YC. New layer-based imaging and rapid prototyping techniques for computer-aided design and manufacture of custom dental restoration. J Med Eng Technol 2008; 32(1): 83-90. 5. Krug KP, Knauber AW, Nothdurft FP. Fracture behavior of metal-ceramic fixed dental prostheses with frameworks from cast or a newly developed sintered cobalt-chromium alloy. Clin Oral Investig 2015; 19(2): 401-11. 6. Watanabe I, Topham D. Scott. Laser welding of cast titanium and dental alloys using argon shielding. J Prosthodont 2006; 15(2): 102-7.7. Miyazaki T, Hotta Y, Kunii J, Kuriyama S, Tamaki Y. A review of dental CAD/ CAM: current status and future perspectives from 20 years of experience. Dent Mater J 2009; 28: 44-56.8. Harris J, Rimell J. Can rapid prototyping ever become a routine feature in general dental practice? Dent Update 2002; 29(10): 482-6.9. Ersu B, Yüzügüllü B, Canay G. Sabit Restorasyonlarda CAD/CAM Uygulamaları. Hacettepe Diş Hek Fak Derg 2008; 32(2): 58-72.10.Williams RJ, Bibb R, Eggbeer D, Collis J. Use of CAD/CAM technology to fabricate a removable partial denture framework. J Prosthet Dent 2006; 96(2): 96-9.11. Bulbule N, Motwani BK. Comparative study of fracture resistance of porcelain in metal ceramic restorations by using different metal coping designs- an in vitro study. J Clin Diagn Res 2014; 8(11): 123-7.12.Ucar Y, Aksahin Z, Kurtoglu C. Metal ceramic bond after multiple castings of base metal alloy. J Prosthet D 2009; 102(3): 165-71.13. Saker S, El-Fallal A, Abo-Madina M, Ghazy M, Ozcan M. Clinical survival of anterior metal-ceramic and all-ceramic cantilever resin-bonded fixed dental prostheses over a period of 60 months. Int J Prosthodont 2014; 27(5): 422-4.14. Mutlu-Sagesen Lamia, Ergun G, Karabulut E. Ion release from metal-ceramic alloys in three different media. Dent Mater J 2011; 30(5): 598-610.15. Kellerhoff RK, Fıscher J. In vitro fracture strength and thermal shock resistance of metal-ceramic crowns with cast and machined AuTi frameworks. J Prosthet Dent 2007; 97(4): 209-15.16. Kim KB, Kim JH, Kim WC, Kim JH. In vitro evaluation of marginal and internal adaptation of three-unit fixed dental prostheses produced by stereolithography. Dent Mater J 2014;33(4): 504-9.17. Akova T, Ucar Y, Tukay A, Balkaya MC, Brantley WA. Comparison of the bond strength of laser-sintered and cast base metal dental alloys to porcelain. Dent Mater 2008; 24(10): 1400-4.18. Strub JR, Rekow ED, Witkowski S. Computer-aided design and fabrication of dental restorations: current systems and future possibilities. J Amer Dent Ass 2006; 137(9): 1289-96.19.Joias RM, Tango RN, Junho de Araujo JE, Junho de Araujo MA, Ferreira Anzaloni Saavedra Gde S, Paes-Junior TJ, et al. Shear bond strength of a ceramic to Co-Cr alloys. J Prosthet Dent 2008; 99: 54-9.20.Lang LA, Wang RF, Kang B, White SN. Validation of finite element analysis in dental ceramics research. J Prosthet Dent 2001; 86(6): 650-4. 21.Lombardo GH, Nishioka RS, Souza RO, Michida SM, Kojima AN, Mesquita AM, et al. Influence of surface treatment on the shear bond strength of ceramics fused to cobalt–chromium. J Prosthodont 2010; 19(2): 103-11. 22.Hammad IA, Talic YF. Designs of bond strength tests for metal-ceramic complexes: review of the literature. J Prosthet Dent, 1996; 75(6): 602-8.23.Kurtulmus S, Aydın KA. The effect of recastng on mechanıcal propertıes of dental alloys. Cumhuriyet Üni Diş Hek Fak Derg 2008; 11: 132-9.24.Prat J S, Batalla J, Termes J. Adhesion of dental porcelain to cast, milled, and laser-sintered cobalt-chromium alloys: Shear bond strength and sensitivity to thermocycling the J Prosthet Dent 2014; 112: 600-5.25.Isık EN, Aladag A, Toksavul S. Evaluation of porcelain bond strengths of Co-Cr substructures produces by different methods. Ege Uni Dis Hek Fak Derg 2018; 39(2): 111-7. 26.Stawarczyk B, Eichberger M, Hoffmann R, Noack F, Schweiger J, Edelhoff D, et al. A novel CAD/CAM base metal compared to conventional CoCrMo alloys: an in-vitro study of the long-term metal-ceramic bond strength. Oral Health Dent Manag 2014; 13(2): 446-52. 27.Wang H, Feng Q, Li N, Xu S. Evaluation of metal-ceramic bond characteristics of three dental Co-Cr alloys prepared with different fabrication techniques. J Prosthet Dent 2016; 116(6): 916–23.28. Zeng L, Xiang N, Wei BA. Comparison of corrosion resistance of cobalt-chromium-molybdenum metal ceramic alloy fabricated with selective laser melting and traditional processing. J Prosthet Dent 2006; 112(5): 1217–24.29.Hangwei W, Quing T, Ning L, Sheng X. .Evaluation of metal ceramic bond characteristics of three dental Co-Cr alloys prepared with different fabrication techniques. J Prosthet Dent 2016; 116: 916-23.30. Scherrer SS, Cesar PF, Swain MV. Direct comparison of the bond strength results of the different test methods: A critical literature review. Dent Mater 2010; 26(2): e78-93.