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← HistoryWhich consequence occurs if expansion in a pietra dura inlay exceeds substrate?
A)Cracking and material detachment✓
B)Consistent material compression forms
C)Adhesion increases over time
D)Thermal conductivity improvement observed
💡 Explanation
Cracking and detachment result because differential thermal expansion introduces substantial shear stress, rather than uniform compression. The thermal expansion coefficient mismatch results in displacement; therefore, the weaker adhesion fails, causing the stone to detach, rather than improving conductivity.
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