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

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

References

1. [1] Rekow, E.D., ''CAD/CAM in dentistry: a historical perspective and view of the future'', Journal of the Canadian Dental Association, 1992, 58(4): 283, 7-8.
2. [2] Awad, D., Stawarczyk, B., Liebermann, A., Ilie, N., ''Translucency of esthetic dental restorative CAD/CAM materials and composite resins with respect to thickness and surface roughness'', The Journal of Prosthetic Dentistry, 2015, 113(6): 534-540.
3. [3] Li, R.W.K., Chow, T.W., Matinlinna, J.P., ''Ceramic dental biomaterials and CAD/CAM technology: State of the art'', Journal of Prosthodontic Research, 2014, 58(4): 208-216.
4. [4] Albashaireh, Z.S.M., Ghazal, M., Kern, M., ''Two-body wear of different ceramic materials opposed to zirconia ceramic'', The Journal of Prosthetic Dentistry, 2010, 104(2): 105-113.
5. [5] Gracis, S., Thompson, V.P., Ferencz, J.L., Silva, N.R., Bonfante, E.A., ''A new classification system for all-ceramic and ceramic-like restorative materials'', The International Journal of Prosthodontics, 2015, 28(3): 227-235.
6. [6] Li, R.W., Chow, T.W., Matinlinna, J.P., ''Ceramic dental biomaterials and CAD/CAM technology: state of the art'', Journal of Prosthodontic Research, 2014, 58(4): 208-216.
7. [7] Gautam, C., Joyner, J., Gautam, A., Rao, J., Vajtai, R., ''Zirconia based dental ceramics: structure, mechanical properties, biocompatibility and applications'', Dalton Transactions, 2016, 45(48):19194-19215.
8. [8] Stawarczyk, B., Ozcan, M., Trottmann, A., Schmutz, F., Roos, M., Hammerle, C., ''Two-body wear rate of CAD/CAM resin blocks and their enamel antagonists'', Journal of Prosthetic Dentistry, 2013, 109(5): 325-332.

9. [9] Theodoro, G.T., Fiorin, L., Moris, I.C.M, Rodrigues, R.C.S., Ribeiro, R.F., Faria, A.C.L., ''Wear resistance and compression strength of ceramics tested in fluoride environments'', Journal of the Mechanical Behavior of Biomedical Materials, 2017, 65: 609-615.
10. [10] Heintze, S.D., Cavalleri, A., Forjanic, M., Zellweger, G., Rousson, V., ''Wear of ceramic and antagonist—A systematic evaluation of influencing factors in vitro'', Dental Materials, 2008, 24(4): 433-449.
11. [11] Brunot-Gohin, C., Duval, J.L., Verbeke, S., Belanger, K., Pezron, I., Kugel, G., ''Biocompatibility study of lithium disilicate and zirconium oxide ceramics for esthetic dental abutments'', Journal of Periodontal & Implant Science, 2016, 46(6): 362-371.
12. [12] Mallineni, S.K., Nuvvula, S., Matinlinna, J.P., Yiu, C.K., King, N.M., ''Biocompatibility of various dental materials in contemporary dentistry: a narrative insight'', Journal of Investigative and Clinical Dentistry, 2013, 4(1): 9-19.
13. [13] El Zhawi, H., Kaizer, M.R., Chughtai, A., Moraes, R.R., Zhang, Y., ''Polymer infiltrated ceramic network structures for resistance to fatigue fracture and wear'', Dental Materials, 2016, 32(11): 1352-1361.
14. [14] Lawson, N.C., Bansal, R., Burgess, J.O., ''Wear, strength, modulus and hardness of CAD/CAM restorative materials'', Dental Materials, 2016, 32(11): e275-e283
15. [15] Zhi, L., Bortolotto, T., Krejci, I., ''Comparative in vitro wear resistance of CAD/CAM composite resin and ceramic materials'', The Journal of Prosthetic Dentistry, 2016, 115(2): 199-202.
16. [16] Mormann, W.H., Stawarczyk, B., Ender, A., Sener, B., Attin, T., Mehl, A., ''Wear characteristics of current aesthetic dental restorative CAD/CAM materials: two-body wear, gloss retention, roughness and Martens hardness'', Journal of the Mechanical Behavior of Biomedical Materials, 2013, 20:113-25.
17. [17] Stawarczyk, B., Liebermann, A., Eichberger, M., Guth, J.F., ''Evaluation of mechanical and optical behavior of current esthetic dental restorative CAD/CAM composites'', Journal of the Mechanical Behavior of Biomedical Materials, 2015, 55:1-11.
18. [18] Baran, G., Boberick, K., McCool, J., ''Fatigue of restorative materials'', Critical reviews in oral biology and medicine : an official publication of the American Association of Oral Biologists, 2001, 12(4): 350-60.
19. [19] Swain, M.V., Coldea, A., Bilkhair, A., Guess, P.C., ''Interpenetrating network ceramic-resin composite dental restorative materials'', Dental Materials, 2016, 32(1): 34-42.