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

Year 2020, Volume: 7 Issue: 1, 57 - 66, 31.01.2020

Hojjat Ghahramanzadeh Asl , Ömer Sağsöz , Levent Kara

https://doi.org/10.31202/ecjse.593747

Abstract

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

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

Abstract

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.

Keywords

CAD/CAM restorative malzemeler, Aşınma, Mikro sertlik

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