ESTETİK RESTORATİF CAD/CAM MATERYALLERİN TRANSLÜSENSİ VE RENK STABİLİTESİNİN DEĞERLENDİRİLMESİ

Amaç: Estetik restoratif CAD/CAM kompoziti (Lava Ulti- mate; 3M ESPE, St.Paul, ABD) ve hibrit seramik materya- linin (Vita Enamic, Vita Zahnfabrik, Almanya) translüsensi ve renk stabilitesi hakkında yeterli bilgi bulunmamaktadır. Bu çalışmanın amacı, restorative CAD/CAM materyallerinin translüsensi ve renk stabilitesini araştırmaktır. Gereç ve Yöntem: Onar örnekten oluşan dört grup, 1 mm kalınlığında hibrit seramik ve rezin nanoseramik kompozit rezin monolitik bloklardan hazırlandı. Test edilen tüm materyaller için 2M2, yüksek translüsensili bloklar seçildi. Yüzey bitirmelerinde Lava Ultimate örnekler için Sof-Lex (3M ESPE, St.Paul, ABD) diskler, Vita Enamic için Vita Enamic polishing set (Vita Enamic, Vita Zahnfabrik, Almanya) kullanıldı. Örneklerin her iki yüzüne de polisaj uygulandı. Translüsensi parametresi ve renk farklılıkları, örnekler 48 saat kahve solüsyonunda bekletilmeden önce ve sonrasında CIE L*a*b* sisteminde spektrofotometre (Vita Easy Shade, Vita Zahnfabrik, Almanya) ile ölçüldü. Veriler Mann-Whitney U testi ile incelendi (p<.05). Bulgular: Lava ve Vita Enamic kontrol grupları arasında anlamlı fark görülmedi (p=1). Kahve solüsyonunda bekletilme sonrasında CAD/CAM materyallerin translüsensi parametresi değerleri azalırken ∆E renk farklılıklarında artış gözlendi. Kahvede bekletilme sonrasında Lava Ultimate (10.9±1), Vita Enamic’den (9.1±0.7) daha yüksek translüsensi parametresi değeri sergiledi. Ayrıca kahvede bekletilen Lava Ultimate örneklerin ∆E değeri (∆E=3.4) Vita Enamic’den (∆E=1.8) daha fazla ve eşik değerin (∆E=2.7) üstünde ölçüldü. Sonuç: Çalışmamızda Lava Ultimate daha yüksek translü- sensi değeri sergiledi ancak daha fazla renk değişimi gösterdi. Anahtar Kelimeler: Translüsensi, Renk Stabilitesi, CAD/CAMEVALUATION OF TRANSLUCENCY AND COLOR STABILITY OF ESTHETIC CAD/CAM RESTORATIVE MATERIALS ABSTRACT Aim: Adequately information is not available about the translucency and color stability of esthetic restorative CAD/CAM composite (LAVA Ultimate, 3M ESPE, StPaul, USA) and hybrid ceramic material (VITA Enamic, Vita Zahnfabrik, Germany). The purpose of this study was to investigate the translucency and color stability of restorative CAD/CAM materials. Material and Methods: Four groups consist of 10 specimens, were prepared with 1 mm thickness of hybrid ceramic and resin nano ceramic composite resin monolithic blocks. 2M2 high translucent blocks were chosen for all tested materials. Surface finishing was performed with Sof-Lex (3M ESPE, StPaul, USA) discs for Lava Ultimate specimens and Vita Enamic polishing set (VITA Enamic, Vita Zahnfabrik, Germany) was used for Vita Enamic. The polishing procedures were performed on both sides of the specimens. Translucency parameter and color differences were measured in the CIE L*a*b* system by spectrophotometer (Vita Easy Shade, Vita Zahnfabrik, Germany) before and after 48 hours of immersion in a coffee solution. Data were analyzed with Mann-Whitney U test (p<.05). Results: There was no significant difference between the Lava control group and Vita Enamic control group (p=1). After immersion of coffee solution, translucency parameter values of CAD/CAM materials were decreased and increased ∆E color differences were observed. Significant differences were found among coffee groups for all specimens tested (p<.001). After coffee immersion, Lava Ultimate showed higher translucency parameter value (10.9±1) than Vita Enamic (9.1±0.7). Also, ∆E values of Lava Ultimate (∆E=3.4) specimens which stored in coffee solution were higher than Vita Enamic (∆E=1.8), and were over than threshold ∆E (∆E=2.7). Conclusion: Lava Ultimate showed more translucency parameter value, but also showed more staining in our study. Keywords: Translucency; Color Stability; CAD/CAM

Anahtar Kelimeler:

Translüsensi, Renk Stabilitesi

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