FEA-predicted subsurface damage in micro finishing of a feldspar porcelain using fine-grit dental burs
Song, Xiao-Fei, and Yin, Ling (2010) FEA-predicted subsurface damage in micro finishing of a feldspar porcelain using fine-grit dental burs. Key Engineering Materials, 443 . pp. 562-566.
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Biocompatible ceramic structures are used to replace missing teeth, tooth structure lost to disease or trauma, and un-aesthetic healthy, tooth enamel. Recreating aesthetics and function are the two practical goals of such restorative treatment. However, the failure rate of ceramic prostheses is relatively high due to their inherent brittleness. A primary reason to premature failure of ceramic prostheses is surface and subsurface damage induced in dental intraoral finishing using dental handpieces and abrasive burs. In this paper, finite element analysis (FEA) was applied to predict quantitatively finishing-induced stress fields and subsurface damage depths in dental porcelain surfaces using fine grit diamond burs. The results indicate that while finishing using fine diamond burs diminished subsurface damage, damage depths of smaller than 20 µm remained depending on the bur depth of cut and feed rate. In the FEA modeling, the minimum damage was obtained under very fine finishing conditions.
|Item Type:||Article (Refereed Research - C1)|
|Keywords:||dental ceramics; FEA; micro finishing; stress field; subsurface damage|
|FoR Codes:||09 ENGINEERING > 0913 Mechanical Engineering > 091308 Solid Mechanics @ 100%|
|SEO Codes:||92 HEALTH > 9204 Public Health (excl. Specific Population Health) > 920402 Dental Health @ 100%|
|Deposited On:||12 Apr 2011 15:08|
|Last Modified:||12 Apr 2011 15:08|
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