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Study on changing the coefficient of thermal expansion (CTE) of dental porcelain

O Jamaluddin1, A A Zainal

  • 1School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Pulau Pinang, Malaysia.

The Medical Journal of Malaysia
|October 8, 2004
PubMed

Keywords:
dental porcelain CTEleucite phase formationpotassium nitrate in ceramicsthermal expansion coefficient

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If the temperature of an object is changed while it is prevented from expanding or contracting, the object is subjected to stress. The stress is compressive if the object expands in the absence of constraint and tensile if it contracts. This stress resulting from temperature change is known as thermal stress. It can be quite large and can cause damage. To avoid this stress, engineers may design components so they can expand and contract freely. For instance, on highways, gaps are deliberately...
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