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Effect of sintering duration on the sliding‐wear resistance of 3Y‐TZP dental ceramics
Author(s) -
Alonso Javier,
RodríguezRojas Fernando,
BorreroLópez Oscar,
Ortiz Angel L.,
Guiberteau Fernando
Publication year - 2019
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13291
Subject(s) - materials science , sintering , microstructure , abrasive , ceramic , cubic zirconia , wear resistance , composite material , machining , yttria stabilized zirconia , metallurgy
Zirconia doped with 3 mol% yttria (3Y‐TZP) is widely employed in prosthetic dentistry. The standard routine in the manufacture of prostheses involves subtractive machining of a commercial presintered block, followed by pressureless sintering up to full densification using one of the heat treatments indicated by the supplier, so as to obtain adequate strength. Usually, however, little information is provided on how these treatments affect the wear resistance. The present work therefore investigated how three sintering cycles of different durations recommended by a commercial supplier affected the microstructure and long‐term degradation in the form of sliding‐wear of the resulting 3Y‐TZP ceramics. It was found that the three cycles essentially resulted in the same wear behavior (ie, wear modes and mechanisms, as well as specific wear rate ~5·10 –6 mm 3 /Nm). The results are analyzed within the framework of existing abrasive wear models, and implications for the manufacture of durable prostheses are discussed.