Journals / Hacettepe Dişhekimliği Fakültesi Derg.(. Clinical Dentistry and Research) / 2005 / Cilt: 29 - Sayı: 2

Isı ile preslenebilen tüm seramiklerde zamana bağlı termal gerilimler: Fea çalışması

Time-related thermal stresses on heat-pressed all-ceramics: A fea study

Pages
51–59
Publication Date
2022-10-17
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Conclusion: Thermal changes in the oral environ¬ment might cause thermal fatigue by time and lead to material failure.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: To analyze the time-related stress distribu¬tion of thermal loading all-ceramic crown by using a two-dimensional (2D) finite element analysis (FEA).
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Key Findings & Data:Material and Method: The following restorative materials were used: IPS Empress (IE), IPS Empress 2 (IE 2), Carrara press ceramic (Ca) and Ceramco FAC all-ceramic (Ce).
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Conclusion & Impact:Conclusion: Thermal changes in the oral environ¬ment might cause thermal fatigue by time and lead to material failure.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: To analyze the time-related stress distribu¬tion of thermal loading all-ceramic crown by using a two-dimensional (2D) finite element analysis (FEA). Material and Method: The following restorative materials were used: IPS Empress (IE), IPS Empress 2 (IE 2), Carrara press ceramic (Ca) and Ceramco FAC all-ceramic (Ce). A two-dimensional finite element model of a crowned mandibular first premolar tooth in shoulder preparation with an intermediate cement layer was designed for the analysis of the stress dist¬ributions induced by applied thermal loads for various all ceramic materials. Variolink II dual-curing compo¬site resin was selected as the luting material. Thermal loads ranging from 60°C to 15°C were applied on all prepared models. The thermal changes and related thermal stress distributions on the restorative materi¬als were recorded. Results: The results revealed that IPS Empress, Carrara press ceramic and Ceramco FAC all-cera¬mic materials exhibited different values while IPS Empress 2 material showed similar properties to that of enamel. Conclusion: Thermal changes in the oral environ¬ment might cause thermal fatigue by time and lead to material failure.

Özet

Amaç: Tam seramik kuronlarda, termal yüklemenin zamana bağlı olarak oluşturduğu gerilim dağılımı iki boyutlu sonlu eleman stress analizi (FEA) kullanıla¬rak incelendi. Gereç ve Yöntem: Çalışmada, IPS Empress (IE), IPS Empress 2 (IE 2), Carrara Press (Ca) ve Ceramco FAC (Ce) tam seramik malzemeleri kullanıldı. Köle bölgesinde dik açılı basamak oluşturularak alt çene birinci küçük azı dişin iki boyutlu (2D) sonlu eleman modeli hazırlandı. Siman tabakası modellemeye dahil edilerek farklı tam seramik malzemelerde termal yüklerle indüklenen gerilim dağılımlarının incelenmesi sağlandı. Variolink II dual-cure kom-pozit rezin siman olarak kullanıldı. Hazırlanan tüm modellere 60°C ile 15°C termal yükler uygulandı. Bulgular: Restoratif malzemelerdeki termal deği¬şimler ve termal gerilim dağılımları kaydedildi. Elde edilen sonuçlara göre, IPS Empress, Carrara Press ve Ceramco FAC tam seramik malzemelerde farklı değerler gözlemlenirken, IPS Empress 2 malzemesi mine ile benzer özellikler gösterdi. Sonuç: Tam seramik kuronların klinik uygulama¬larında, ağız içindeki termal değişimler zamanla termal yorulmaya ve malzemenin başarısızlığına yol açabilir.

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Cite This Article

KARAOĞLU, Ç., GÜNGÖR, M. A., DÜNDAR, M., ARTUNÇ, C. (2022). Isı ile preslenebilen tüm seramiklerde zamana bağlı termal gerilimler: Fea çalışması. Hacettepe Dişhekimliği Fakültesi Derg.(. Clinical Dentistry and Research), Cilt: 29 - Sayı: 2, 51–59. https://ajindex.com/articles/528530

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