Wear evaluation of the human enamel opposing different Y-TZP dental ceramics and other porcelains

Mi Jin Kim, Sun Hee Oh, Ji Hwan Kim, Sung Won Ju, Deog Gyu Seo, Sang Ho Jun, Jin Soo Ahn, Jae Jun Ryu

Research output: Contribution to journalArticlepeer-review

129 Citations (Scopus)


Purpose: This study examined the wear resistance of human enamel and feldspathic porcelain after simulated mastication against 3 zirconia ceramics, heat-pressed ceramic and conventional feldspathic porcelain. Materials and methods: Human teeth and feldspathic porcelain cusp were tested against ceramic discs. 5 brands were tested - 3 monolithic zirconia, Prettau, Lava, and Rainbow, one lithium disilicate, IPS e.max Press, and one feldspathic porcelain, Vita-Omega 900. The surface was polished using a 600 grit and 1200 grit SiC paper. Each group was loaded for 300,000 cycles in a chewing simulator. The wear resistance was analyzed by measuring the volume of substance lost. The wear surfaces were observed by scanning electron microscopy to determine the wear characteristics. Results: Vita-Omega 900 led to the greatest amount of enamel wears followed by IPS e.max Press, Prettau, Lava and Rainbow. There was a significant difference between Vita-Omega 900 and IPS e.max Press (p < 0.05). The wear values for human enamel were significantly greater than those for feldspathic porcelain, regardless of the surface roughness of the ceramic specimens (p < 0.05). Conclusion: The wear behaviour of human enamel and feldspathic porcelain varies according to the type of substrate materials. On the other hand, 3 zirconia ceramics caused less wear in the abrader than the conventional ceramic. Clinical significance: Dental professionals should be aware of the wear effect of dental restorations on the opposing teeth or restorations. The amount of enamel wear was highest in feldspathic porcelains whereas zirconia ceramics caused less wear on the opposing teeth.

Original languageEnglish
Pages (from-to)979-988
Number of pages10
JournalJournal of Dentistry
Issue number11
Publication statusPublished - 2012 Nov
Externally publishedYes

Bibliographical note

Funding Information:
First two authors contributed equally to this work. This study was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2010-0005090 and 2011-0005559 ).


  • Ceramic
  • Tooth
  • Wear
  • Y-TZP
  • Zirconia

ASJC Scopus subject areas

  • General Dentistry


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