Turkiye Klinikleri Journal of Dental Sciences

.: ORIGINAL RESEARCH
Farklı Parlatma Yöntemlerinin İki Farklı CAD/CAM Cam Seramiğin Yüzey Pürüzlülüğü Üzerine Etkisi: İn Vitro Çalışma
Effect of Different Polishing Methods on the Surface Roughness of Two Different CAD/CAM Glass Ceramics: In Vitro Study
Yener OKUTANa, Mustafa Borga DÖNMEZb, Münir Tolga YÜCELc
aAydın Adnan Menderes Üniversitesi Diş Hekimliği Fakültesi, Protetik Diş Tedavisi ABD, Aydın, TÜRKİYE
bBiruni Üniversitesi Diş Hekimliği Fakültesi, Protetik Diş Tedavisi ABD, İstanbul, TÜRKİYE
cSelçuk Üniversitesi Diş Hekimliği Fakültesi, Protetik Diş Tedavisi ABD, Konya, TÜRKİYE
Turkiye Klinikleri J Dental Sci. 2022;28(1):157-64
doi: 10.5336/dentalsci.2021-83808
Article Language: TR
Full Text
ÖZET
 Amaç: Bu çalışmanın amacı, farklı parlatma tekniklerinin 2 farklı bilgisayar destekli tasarım/bilgisayar destekli üretim [computer aided design/ computer aided manufacturing (CAD/CAM)] cam seramiğin yüzey pürüzlülüğü üzerine etkisini incelemektir. Gereç ve Yöntemler: Toplamda 96 adet dikdörtgen şekilli lityum disilikat (IPS e.max CAD, LDS) ve zirkonya ile güçlendirilmiş lityum silikat (Vita Suprinity, ZLS) cam seramik örnek üretici talimatları doğrultusunda üretildi ve sırasıyla 600 ve 1000 grenli silikon karbid kâğıtlar kullanılarak zımparalandı. Her bir seramiğe ait örnekler parlatma yöntemlerine göre rastgele 4 alt gruba ayrıldı (n=12): Kontrol, glaze, polisaj patı (Diapolisher), polisaj lastiği (Identoflex). Ortalama yüzey pürüzlülüklerinin (Ra; μm) belirlenebilmesi için profilometre kullanıldı. Her örnekte 3 farklı bölgeden ve 3 farklı yönde toplam 9 ölçüm yapıldı. Her gruptan bir örneğe taramalı elektron mikroskobu analizi uygulandı. Veriler 2 yönlü ANOVA ve Tamhane testleri kullanılarak analiz edildi (α=0,05). Bulgular: ZLS kontrol grubu en yüksek yüzey pürüzlülüğünü, LDS glaze grubu ise en düşük yüzey pürüzlülüğü değerlerini göstermiştir. Parlatma yöntemi uygulanan tüm gruplarda kontrol gruplarına göre önemli ölçüde düşük Ra değerleri elde edilmiştir. Glaze grupları diğer gruplara göre daha düşük Ra değerleri göstermiştir (p<0,05). LDS örneklerde pat ve lastik grubu arasındaki fark önemli bulunmazken (p>0,05), ZLS pat grubu lastik grubuna göre daha yüksek Ra değerleri göstermiştir (p<0,05). Sonuç: Bu çalışmada kullanılan bütün parlatma yöntemleri cam seramiklerin yüzey pürüzlülüğünü azaltmada etkili bulunmuştur.

Anahtar Kelimeler: Cam seramikler; yüzey özellikleri
ABSTRACT
 Objective: The purpose of this study was to investigate the influence of different polishing techniques on surface roughness of 2 different computer aided design/computer aided manufacturing (CAD/CAM) glass ceramics. Material and Methods: A total of 96 rectangular lithium disilicate (IPS e.max CAD, LDS) and zirconia reinforced lithium silicate (Vita Suprinity, ZLS) glass-ceramic specimens were prepared according to manufacturers' instructions and ground using 600 and 1000 grit silicon carbide abrasive papers, respectively. Each type of ceramic specimens were randomly divided into 4 subgroups (n=12) according to the polishing methods used: Control, Glaze, Polishing paste (Diapolisher), Ceramic polisher (Identoflex). Surface profilometer was used to determine the average surface roughness (Ra; μm). A total of 9 readings were performed for each specimen at 3 different locations and 3 different directions. Scanning electron microscopy was performed on one specimen per group. Data were analyzed by 2-way ANOVA and Tamhane tests (α=0.05). Results: ZLS control group exhibited the highest mean Ra, while the lowest values were found in LDS glaze. Significantly lower Ra values were obtained in all polishing groups compared to the control groups. Glaze groups showed statistically lower Ra values compared to others (p<0.05). The difference between polishing paste and ceramic polisher was not significant for LDS (p>0.05), while polishing paste showed statistically higher Ra compared to ceramic polisher for ZLS (p<0.05). Conclusion: All polishing techniques used in this study were effective in decreasing the surface roughness of glass-ceramics.

Keywords: Surface properties; glass ceramics
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