Comparison of Colour Stability of Lithium Disilicate, Indirect Resin Composite and Zirconia: An In Vitro Study

Year 2024, Volume: 8 Issue: 2, 66 - 71, 29.08.2024

Erkut Kahramanoğlu , Mohammed Badwan

https://doi.org/10.29228/erd.73

Abstract

Objective: The study was aimed to examine the colour stability of lithium disilicate, indirect resin composite and zirconia.
Materials and Methods: One hundred and twenty samples were split into three groups (n=40) of materials lithium disilicate, indirect resin composite and zirconia (10 mm diameter and 1mm thick discs). Discs were cemented with three different dual cured resin cements. Thermocycling of 10000 cycles for 168 hours was applied to 20 specimens from each group. The samples then emerged in staining solutions (coffee and tea) for 7 days. Colour changes were measured at four different stages to determine ΔE using spectrophotometer.
Results: The study results revealed a statistically significant difference between the materials before and after cementation and thermal cycle (p<0.05). Regarding staining solutions, the results also showed a statistically significant difference between three materials (p<0.05). No statistically significant difference was found between coffee and tea in terms of colour changing effects (p<0.05).
Conclusion: Thermal cycle, cementation and staining solutions had an impact on the colour stability of three different materials. IPS e.max had the highest colour stability.
Clinical significance: Colour stability is one of the main elements for the success of a dental treatment. Thus, staining resistance is an essential property for the longevity of aesthetic restorations.

Keywords

Lithium disilicate, Indirect resin composite, Zirconia, Colour stability, Staining

Lityum Disilikat, İndirekt Rezin Kompozit ve Zirkonyanın Renk Stabilitesinin Karşılaştırılması: In Vitro Çalışma

Abstract

Amaç: Çalışmanın amacı lityum disilikat, indirekt rezin kompozit ve zirkonyanın renk stabilitesini incelemektir.
Gereç ve Yöntem: Yüz yirmi örnek, lityum disilikat, indirekt rezin kompozit ve zirkonya (10 mm çap ve 1 mm kalınlığında diskler) materyallerinden oluşan üç gruba (n=40) ayrıldı. Diskler üç farklı dual cure rezin simanıyla simante edildi. Her gruptan 20 örneğe 168 saat boyunca 10000 döngülük termal siklüs uygulandı. Daha sonra örnekler 7 gün boyunca boyama solüsyonlarında (kahve ve çay) ortaya çıktı. Renk değişimleri spektrofotometre kullanılarak ΔE'yi belirlemek için dört farklı aşamada ölçüldü.
Bulgular: Çalışma sonuçları, simantasyon öncesi ve sonrası materyaller ile termal siklus arasında istatistiksel olarak anlamlı bir fark olduğunu ortaya koydu (p<0.05). Boyama solüsyonlarına ilişkin sonuçlar, üç malzeme arasında istatistiksel olarak anlamlı bir fark olduğunu da gösterdi (p<0,05). Kahve ve çay arasında renk değiştirme etkileri açısından istatistiksel olarak anlamlı bir fark bulunmamıştır (p<0,05).
Sonuç: Termal siklus simantasyon ve boyama solüsyonlarının üç farklı materyalin renk stabilitesi üzerinde etkisi olduğu görüldü. IPS e.max en yüksek renk stabilitesine sahip olduğu tespit edildi.
Klinik önem: Renk stabilitesi, bir diş tedavisinin başarısı için ana unsurlardan biridir. Bu nedenle, renklenmeye karşı direnç estetik restorasyonların uzun ömürlülüğü için önemli bir özelliktir.

Keywords

Lityum Disilikat, İndirekt Rezin Kompozit, zirkonya, Renk Stabilitesi, renklenme

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