Hojjat GHAHRAMANZADEH ASL, Ömer SAĞSÖZ, Levent KARA

Beş (5) Farklı CAD / CAM Restoratif Malzemelerin Mekanik ve Aşınma Özelliklerinin İncelenmesi

Bu çalışmada, CAD / CAM restoratif malzemelerinden olan feldspatik seramik, lösit takviyeli cam seramik, lityum disilikat cam seramiği ve reçine-matriks seramiklerinin mekanik ve aşınma özellikleri araştırılmıştır. Malzemelerin sertlik değerleri mikro sertlik test cihazı ile ölçülmüştür. Aşınma özellikleri disk üzeri pin tribometresi ile incelenmiştir. Optik profilometre ile aşınma hacmi ölçülmüştür. Aşınma izleri Taramalı Elektron Mikroskobu ile incelenmiştir. En düşük sürtünme katsayısı Lava Ultimate'den elde edilmiştir. En yüksek aşınma oranının, en düşük mikro sertliği gösteren LAVA örneğinden elde edildiği gözlenmiştir. En düşük aşınma oranı, en yüksek mikro sertliği gösteren e-max numunesinden elde edilmiştir. Cam seramik malzemeler reçine matriks seramik malzemelere göre daha iyi aşınma direncine sahip olduğu tespit edilmiştir.

Anahtar Kelimeler:

CAD/CAM restorative malzemeler, Aşınma, Mikro sertlik

Investigation of Mechanical and Wear Properties of 5 different CAD/CAM Restorative Materials

In this study it was investigated mechanical and wear properties of CAD/CAM restorative materials including feldspathic ceramic, leucite-reinforced glass ceramic, lithium disilicate glass ceramic, and resin-matrix ceramics. The hardness values of materials were measured with micro hardness tester. Wear properties were evaluated with pin on disk tribometre. Wear volume were measured with optical profilometre. Worn surfaces were examined with Scanning Electron Microscopy. The lowest friction coefficient was obtained from Lava Ultimate. It was observed that the highest wear rate was obtained from the LAVA sample was showing the lowest micro-hardness. The lowest wear rate was obtained from e-max sample which was showing the highest micro-hardness. The glass ceramic materials showed better wear resistance than resin-matrix ceramic materials.

Keywords:

CAD/CAM restorative materials, Wear, Micro Hardness,

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