TY - JOUR
T1 - Tribological performance of the pair human teeth vs 3D printed zirconia
T2 - An in vitro chewing simulation study
AU - Branco, A. C.
AU - Silva, R.
AU - Jorge, H.
AU - Santos, T.
AU - Lorenz, K.
AU - Polido, M.
AU - Colaço, R.
AU - Serro, A. P.
AU - Figueiredo-Pina, C. G.
N1 - Publisher Copyright:
© 2020
PY - 2020/10
Y1 - 2020/10
N2 - This study aims to evaluate the tribological performance of the pair human teeth/robocasted zirconia, with a special focus on the enamel wear mechanisms. Zirconia pieces produced by robocasting (RC) and unidirectional compression (UC) were compared in terms of crystalline structure, density, porosity, hardness and toughness. Chewing simulation tests were performed against human dental cusps. The cusps wear was quantified and the wear mechanisms identified. Although most of the properties of UC and RC samples are similar, differences were observed for surface roughness and porosity. Although the samples did not suffer wear, the antagonist cusps worn in a similar way. In conclusion, robocasting seems a promising technique to produce customized zirconia dental pieces, namely in what concerns the overall tribological behaviour.
AB - This study aims to evaluate the tribological performance of the pair human teeth/robocasted zirconia, with a special focus on the enamel wear mechanisms. Zirconia pieces produced by robocasting (RC) and unidirectional compression (UC) were compared in terms of crystalline structure, density, porosity, hardness and toughness. Chewing simulation tests were performed against human dental cusps. The cusps wear was quantified and the wear mechanisms identified. Although most of the properties of UC and RC samples are similar, differences were observed for surface roughness and porosity. Although the samples did not suffer wear, the antagonist cusps worn in a similar way. In conclusion, robocasting seems a promising technique to produce customized zirconia dental pieces, namely in what concerns the overall tribological behaviour.
KW - Dental zirconia pieces
KW - Robocasting
KW - Tribological behaviour
KW - Unidirectional compressing
UR - http://www.scopus.com/inward/record.url?scp=85086429283&partnerID=8YFLogxK
U2 - 10.1016/j.jmbbm.2020.103900
DO - 10.1016/j.jmbbm.2020.103900
M3 - Article
C2 - 32957205
AN - SCOPUS:85086429283
SN - 1751-6161
VL - 110
JO - Journal of the Mechanical Behavior of Biomedical Materials
JF - Journal of the Mechanical Behavior of Biomedical Materials
M1 - 103900
ER -