3D yazıcı rezinlerin renk stabilitesinin karşılaştırılması

Abstract

Amaç: Bu çalışmanın amacı, kahve solüsyonuna daldırma sonrası iki farklı 3D baskı reçinesi, bir CAD/CAM reçine nano-seramik blok ve bir nanohibrit kompozit reçinenin uzun dönem renk stabilitelerini karşılaştırmaktı. Gereç ve Yöntem: Farklı üretim teknikleriyle üretilmiş dört farklı reçine esaslı materyalden örnekler hazırlandı: Eksiltmeli üretim (Cerasmart – Grup CS), Eklemeli üretim (VarseoSmile Crown Plus – Grup VS, Crowntec – Grup CT) ve geleneksel direkt kompozit yöntem (Clearfil Majesty Esthetic – Grup CME). Örnekler, 30 gün boyunca her gün 45 dakika kahve solüsyonuna daldırıldı ve günün kalan süresinde distile suda saklandı. Renk ölçümleri 1., 7., 14. ve 30. günlerde spektrofotometre ile yapıldı. Renk değişimleri (ΔE), CIEDE2000 formülü kullanılarak hesaplandı. Veriler tek yönlü ANOVA testi ile analiz edildi, anlamlı farklılıklar Tukey testi ile değerlendirildi. p<0.05 değeri istatistiksel olarak anlamlı kabul edildi. Bulgular: 30 günün sonunda en düşük renk değişimi Grup VS’de (ΔE = 4.69), en yüksek renk değişimi ise Grup CS’de (ΔE = 5.60) gözlendi. Ancak gruplar arasındaki fark istatistiksel olarak anlamlı değildi (p = 0.69). Sonuç: 3D baskı reçinelerinin renk değişimi, CAD/CAM reçine nano-seramik bloklar ve konvansiyonel kompozit reçinelerle karşılaştırılabilir düzeydeydi. Ancak tüm materyaller klinik olarak kabul edilebilir eşik değerin (ΔE > 1.8) üzerinde renk değişimi gösterdi. 3D baskı reçineleri ve eklemeli üretim tekniklerinin renk stabilitesini değerlendirmek için daha fazla çalışmaya ihtiyaç vardır.

Keywords

• 3D YAZICI RESİN
• KOMPOZİT REZİN
• RENK STABİLİTESİ
• CAD-CAM

Comparison of color stability of different 3-D printed resins

Abstract

Aims: This study aimed to compare the long-term color stability of two different 3D-printed resins, one CAD/CAM resin nanoceramic block, and one nanohybrid composite resin after immersion in a coffee solution. Methods: Specimens were prepared from four resin-based materials produced via different manufacturing techniques: subtractive manufacturing (Cerasmart-group CS), additive manufacturing (VarseoSmile Crown Plus-group VS, Crowntec-group CT), and conventional methods (Clearfil Majesty Esthetic-group CME). The samples were immersed in coffee for 45 minutes daily over 30 days and stored in distilled water for the rest of the day. Color measurements were taken using a spectrophotometer on days 1, 7, 14, and 30. Color changes (ΔE) were calculated using the CIEDE2000 formula. Data were analyzed using one-way ANOVA, and post hoc comparisons were performed using the Tukey test. A p-value <0.05 was considered statistically significant. Results: There were significant differences among the groups on days 1, 7 and 14. At the end of 30 days, the lowest color change was observed in group VS (ΔE=4.69), while the highest was in group CS (ΔE=5.60). The differences among groups were not statistically significant (p=0.69). Conclusion: The color change of 3D-printed resins was comparable to that of CAD/CAM nanoceramic blocks and conventional composite resins. However, all materials exhibited color changes above the clinically acceptable threshold (ΔE>1.8). Further studies are needed to evaluate the color stability of 3D printing resins and additive manufacturing techniques.

Keywords

• 3D printing
• CAD/CAM
• composite resin
• discoloration

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