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 journalArticle

79 Citations (Scopus)

Abstract

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
Volume40
Issue number11
DOIs
Publication statusPublished - 2012 Nov 1

Fingerprint

Dental Porcelain
Ceramics
Dental Enamel
Tooth
Mastication
Dental Restoration Wear
yttria stabilized tetragonal zirconia
Electron Scanning Microscopy
Hot Temperature
zirconium oxide
vita omega
IPS e.max Press

Keywords

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

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Wear evaluation of the human enamel opposing different Y-TZP dental ceramics and other porcelains. / Kim, Mi Jin; Oh, Sun Hee; Kim, Ji Hwan; Ju, Sung Won; Seo, Deog Gyu; Jun, Sang Ho; Ahn, Jin Soo; Ryu, Jae Jun.

In: Journal of Dentistry, Vol. 40, No. 11, 01.11.2012, p. 979-988.

Research output: Contribution to journalArticle

Kim, Mi Jin ; Oh, Sun Hee ; Kim, Ji Hwan ; Ju, Sung Won ; Seo, Deog Gyu ; Jun, Sang Ho ; Ahn, Jin Soo ; Ryu, Jae Jun. / Wear evaluation of the human enamel opposing different Y-TZP dental ceramics and other porcelains. In: Journal of Dentistry. 2012 ; Vol. 40, No. 11. pp. 979-988.
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AU - Oh, Sun Hee

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AU - Ju, Sung Won

AU - Seo, Deog Gyu

AU - Jun, Sang Ho

AU - Ahn, Jin Soo

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AB - 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.

KW - Ceramic

KW - Tooth

KW - Wear

KW - Y-TZP

KW - Zirconia

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