SUMMARY: Aim: To compare the surface roughness and color stability of a novel alkasite with current direct restorative materials with and without an aging step. Methods and Materials: Twenty-six specimens of each of the following materials were prepared: alkasite, ormocer, giomer, high-viscosity glass ionomer, glass carbomer, and nanohybrid composite (control). Half of the specimens in each group were stained, the other half of the specimens were aged and then stained. Color and surface roughness evaluations were conducted at baseline, after aging and after staining, using a dental spectrophotometer, and a three-dimentional (3D) noncontact optical profilometer, respectively. Statistical analyses were completed using one-way analysis of variance, post hoc Tukey test, and paired samples t-test. Results: At baseline and after aging, the surface of alkasite was found to be rougher than nanohybrid composite and ormocer surfaces (p0.05). In terms of color stability, alkasite was more colored than nanohybrid composite and ormocer (p0.05). Conclusions: The surface roughness and color stability characteristics of alkasite material was between composite resins and glass ionomer-based materials after aging.

Purpose: To evaluate changes in the color of an anterior nanohybrid composite resin and differences in its whitening index after 30 days of brushing with six brands of whitening toothpaste in vitro to simulate the situation in individuals with high coffee consumption.Methods: Eighty-four disk-shaped resin specimens were prepared (shade A2). For initial staining, the samples were immersed in coffee solution for 14 days and then divided into eight groups for treatment with various toothpastes. Color was assessed at the baseline, after initial staining, and on days 7, 14, and 30 of the staining-and-brushing cycle. Color stability was evaluated based on the CIEDE2000 color difference (ΔE00), and differences in whiteness were determined using the whitening index for dentistry (WID).Results: The highest ΔE00 and ΔWID values were obtained with Colgate Herbal, followed by Opalescence Whitening and Crest Baking Soda and Peroxide, whereas the lowest values were obtained with distilled water, followed by Yotuel Pharma B5, on day 30 of the staining-and-brushing cycle.Conclusion: In terms of improving the color and whiteness of coffee-stained anterior nanohybrid composite resin, Colgate Herbal, Opalescence Whitening, and Crest Baking Soda and Peroxide yielded promising results after 30 days of continuous use.

Amaç: Bu çalışmada, Pamukkale Üniversitesi Diş Hekimliği Fakültesi’ndeki öğrencilerin Restoratif Diş Tedavisi lisans eğitimine ilişkin düşüncelerinin ve Restoratif Diş Tedavisi uzmanlığına bakış açılarının değerlendirilmesi amaçlanmaktadır. Gereç ve Yöntem: Pamukkale Üniversitesi Diş Hekimliği Fakültesi’nde yürütülen çalışmada 4. ve 5. Sınıfta eğitim görmekte olan 144 öğrenciye, Restoratif Diş Tedavisi lisans eğitimi ve uzmanlığı ile ilgili 19 sorudan oluşan bir anket uygulandı. Elde edilen veriler SPSS 22.0 yazılımı aracılığıyla istatistiksel anlamlılık seviyesi p