Crack Dynamics in Dental Hard Tissues
How do cracks start and travel through enamel and dentin? Dr Masoud Hassan Zadeh examines the fracture mechanics of each tissue, the dentin-enamel junction as a crack-stopping mechanism, and how tissue structure governs the direction, speed and severity of crack propagation.
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Crack Dynamics in Dental Hard Tissues
This presentation explores the dynamics of crack propagation in enamel and dentin, focusing on the fracture mechanics that govern these distinct dental hard tissues. It examines how cracks initiate and progress through the tooth, revealing both the strengths and weaknesses of its layered structure in resisting failure. Special attention is given to the dentin-enamel junction (DEJ) as a critical crack-stopping mechanism, highlighting its role in preventing catastrophic fractures. The discussion also addresses how variations in tissue composition and histological structure influence the direction, speed, and severity of crack propagation.
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Meet Dr Masoud Hassan Zadeh

Dr Masoud Hassan Zadeh
Masoud Hassan Zadeh is a dedicated practitioner of biomimetic restorative dentistry, a field he has passionately embraced since 2019. He runs his own practice in Drachten, the Netherlands, where he treats patients with a focus on promoting 'healthy aging' and breaking the downward spiral of restored elements. Masoud graduated from Ege University in Izmir, Turkey, in 2015 and obtained his…
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10/1/2025 to 9/30/2027.
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