FARKLI RESTORASYON MATERYALLERİNİN EĞİLME DAYANIMLARININ KARŞILAŞTIRILMASI

Abstract

Amaç: Bu in vitro çalışmanın amacı termal yaşlandırma sonrası eklemeli üretim ve kazıma yöntemi ile üretilen daimi restoratif materyallerin biaksiyal eğilme dayanımlarını karşılaştırmaktır. Gereç ve Yöntem: Bu çalışma için 3D yazıcı (Form3, Formlabs) ile daimi kron materyali kullanılarak (Permanent Crown, Somerville, MA) ve kazıma yöntemi ile iki farklı rezin içerikli materyal (Brilliant Crios (Coltene/ Whaledent; Cerasmart (GC Europe) ile 10 mm×2 mm boyutlarında disk şeklinde örnekler üretilerek üç çalışma grubu oluşturuldu (n=10). Üretim aşamaları üretici talimatlarına uygun şekilde gerçekleştirildi. Daha sonra tüm örnekler su altında silikon karbid kâğıtlarla zımparalandı. Ardından örnekler termal yaşlandırmaya (5-55°C, 5000 döngü) tabi tutuldu. Yaşlandırma sonrası tüm örneklerin universal test cihazı ile biaksiyal eğilme dayanımı değerleri ölçüldü. Elde edilen veriler Tek yönlü ANOVA testi ve post-hoc TUKEY testi ile değerlendirildi. (α=0,05) Bulgular: Elde edilen verilere göre kazıma yöntemi ile üretilen gruplar arasında anlamlı fark bulunmamıştır. (p=0,878) Eklemeli üretimle üretilen grubun Cerasmart grubuyla arasında fark bulunmazken (p=0,110) Brillant Crios grubundan anlamlı ölçüde düşük eğilme dayanımı gösterdiği görülmüştür. (p=0,040) Sonuçlar: Elde edilen sonuçlara göre gruplar arasında termal yaşlandırma sonrası en düşük biaksiyal eğilme dayanımı eklemeli üretimle üretilen grupta görülmüştür.

Keywords

• Eklemeli üretim
• biaksiyal eğilme dayanımı
• CAD/CAM

EVALUATION OF FLEXURAL STRENGTH OF DIFFERENT RESTORATIVE MATERIALS

Abstract

Objective: The aim of this in vitro study was to compare the biaxial flexural strengths of permanent restorative materials produced by additive manufacturing and milling after thermal aging. Material and methods: For this study, three study groups were formed by producing disc-shaped specimens with a 3D printer (Form3, Formlabs) using permanent crown material (Permanent Crown, Somerville, MA) and two different resin-containing materials (Brilliant Crios,Coltene/ Whaledent; Cerasmart, GC Europe) by the milling method (n=10). The entire production process was carried out in accordance with the manufacturer’s instructions. All specimens were then polished under water with silicon carbide papers. The specimens were then subjected to thermal aging (5-55°C, 5000 cycles). After aging, biaxial flexural strength values of all specimens were measured with a universal testing machine. The obtained data were evaluated with the one-way ANOVA test and posthoc TUKEY test (α=0.05). Results: According to the data obtained, no significant difference was found between the groups produced by the milling method (p=0.878). While no difference was found between the group produced by additive manufacturing and the Cerasmart group (p=0.110), it was observed that the flexural strength was significantly lower than the Brilliant Crios group (p=0.040). Conclusion: As a result of this in vitro study, the lowest biaxial flexural strength after thermal aging among the groups was observed in the group produced with additive manufacturing.

Keywords

• Additive manufacturing
• biaxial flexural strength
• CAD/CAM

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