An 8 year old male patient complains of food lodgement with a history of previous restoration of the same tooth. Intra-oral examination reveals fractured Class II amalgam restoration with mandibular molar. Which of the following is not responsible for the fracture of restoration?
A
Poor cavity design resulting in an insufficient bulk of material across the isthmus can lead to failure of even a high-strength alloy
B
Avoiding moisture contamination of amalgam
C
Non-compliance of the child with instructions to refrain from biting down hard on the freshly placed amalgam