Journals / Ankara Üniversitesi Diş Hekimliği Fakültesi Dergisi / 2003 / Cilt: 30 - Sayı: 1

Investigation of tear strengths of permanent soft lining materials polymerized by heat and microwave energy

Isı ve mikrodalga enerjisi ile polimerize edilen daimi yumuşak astar maddelerinin yırtılma dayanıklılığının incelenmesi

Pages
33–40
Publication Date
2022-10-10
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

In addition, it was found that tear strength values were lower in specimens polymerized by microwave energy than these polymerized by heat cure apart from the specimens of fluoro-silicone based Flexor kept for 21 days in distilled water.

📌 3 Key Takeaways

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Objective & Hypothesis:The aim of this study is to investigate the effect of microwave energy and heat polymerization on tear strength values specimens prepared with silicone rubber and fluoro-silicone based soft lining materials.
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Key Findings & Data:For tear strength tests, specimens were prepared at the dimensions of 50x10x1 mm and they were cut 35 mm along their length and to be put into pants leg form.
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Conclusion & Impact:In addition, it was found that tear strength values were lower in specimens polymerized by microwave energy than these polymerized by heat cure apart from the specimens of fluoro-silicone based Flexor kept for 21 days in distilled water.
🔬Design:Research Article
📍Scope:14 specimens
⚙️Variables:Domain Parameters

Abstract

The aim of this study is to investigate the effect of microwave energy and heat polymerization on tear strength values specimens prepared with silicone rubber and fluoro-silicone based soft lining materials. Soft lining materials such as permanent silicone based Molloplast-B and fluoro-silicone based Flexor were used in the investigation. Both materials were polymerized by conventional heat cure and microwave energy. For tear strength tests, specimens were prepared at the dimensions of 50x10x1 mm and they were cut 35 mm along their length and to be put into pants leg form. Half of 14 specimens in each group were kept in distilled water at room temperature for 48 hours and the remaining half on 21 days. Afterwards, they were subjected to tear strength test at the speed of 100 mm/min by Lloyd Universal Testing Machine. The tear strength values found were statistically analysed by one-way Variance analysis and Duncan multiple comparison test. Tear strength of fluoro-silicone relining material was found to be higher compared to that of silicone elastomers. In addition, it was found that tear strength values were lower in specimens polymerized by microwave energy than these polymerized by heat cure apart from the specimens of fluoro-silicone based Flexor kept for 21 days in distilled water. In the comparison of the specimens kept in water for 48 hours and 21 days, there were significant differences between the other groups (P>0.01), although the difference was not significant in Molloplast groups (P>0.05). The differences in the tear strength values of the specimens of Flexor polymerized by microwave and kept for 48 hours and 21 days in distilled water were statistically significant (p

Özet

Bu çalışmanın amacı, mikrodalga enerjisi ile polimerizasyon yönteminin daimi olarak protez kaide akriliklerinin astarlanmasında kullanılan iki silikon esaslı ısı ile polimerize olan yumuşak astar materyalinin yırtılma dayanıklılıkları üzerine etkisinin araştırılmasıdır. Araştırmada kullanılmak üzere daimi amaçlı silikon esaslı Molloplast-B ve fluorosilikon esaslı Flexor isimli yumuşak astar materyalleri seçildi. Her iki astar materyali de konvansiyonel olarak ısı uygulaması ve mikrodalga enerjisi kullanılarak polimerize edildi. Yırtılma dayanıklılığı testleri için 50x10x1 mm boyutlarında hazırlanan test örnekleri, uzun eksenlerinin merkezi boyunca 35 mm kesilerek pantolon bacağı (pants leg) olarak tanımlanan forma uygun hale getirildi. Her gruptaki 14 örneğin yarısı 48 saat, diğer yarısı da 21 gün oda ısısında distile suda bekletildikten sonra Lloyd universal test cihazında 100 mın/dak hızda yırtılma dayanıklılığı testlerine tabi tutulmuştur. Testler sonucunda formüle edilerek hesaplanan yırtılma dayanıklılığı değerleri tek yönlü Varyans analizi ve Duncan çoklu karşılaştırma testi ile istatistiksel olarak incelendi.Genel olarak fluoro-silikon yapıdaki astar materyalinin yırtılma dayanıklılığı silikon elastomere oranla daha yüksek bulunmuştur. Ayrıca fluoro-silikon esaslı Flexor'ün 21 gün suda bekletilen örneklen hariç mikrodalga enerjisi ile polimerize edilen tüm gruplarda yırtılma dayanıklılığı değerlerinin ısı ile polimerizasyondan daha düşük olduğu saptanmıştır. 48 saat ve 21 gün suda bekleme sürelerinin her ikisinde de Molloplast-B'nin ısı ve mikrodalga grupları arasındaki fark önemsizken (P>0.05), diğer gruplar arasındaki farklar önemli bulunmuştur (P

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Cite This Article

GÜRBÜZ, A., KAPLAN, R., KESKİN, Y. (2022). Investigation of tear strengths of permanent soft lining materials polymerized by heat and microwave energy. Ankara Üniversitesi Diş Hekimliği Fakültesi Dergisi, Cilt: 30 - Sayı: 1, 33–40. https://ajindex.com/articles/442245

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