Which of the following statements is(are) true concerning expansion of an investment material?

Question

Quizplus · Accepted Answer

All three statements are true regarding the expansion of investment materials used in casting processes, such as those in dental and jewelry making. Hydroscopic expansion refers to the expansion that occurs when water is added to the investment material. This is a critical factor in the investment's overall expansion. Investments are indeed designed to expand to compensate for the shrinkage of the metal as it cools and solidifies in the mold. Thermal expansion refers to the expansion that occurs as the investment material is heated, which is another critical factor in ensuring the final casting dimensions are accurate.

Which of the Following Statements Is(are) True Concerning Expansion of an Investment