Certified Surgical Technologist (CST) Exam 2026 – 400 Free Practice Questions to Pass the Exam

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In what should plaster rolls for casting be submerged?

Lukewarm saline

Lukewarm water

Submerging plaster rolls for casting in lukewarm water is the appropriate method because it allows the plaster to activate properly and ensures an even and consistent soaking. Lukewarm water helps to prevent the plaster from hardening too quickly, facilitating a smoother application process. It enables the plaster to absorb moisture evenly, which is crucial for achieving optimal setting time and strength in the final cast.

When plaster rolls are submerged in lukewarm water, the temperature promotes better chemical reactions within the plaster, leading to a more uniform consistency. This results in fewer air pockets and a sturdier cast upon drying. Utilizing water that is too cold can lead to a longer setting time, making the process cumbersome, whereas excessively hot water could cause the plaster to set too rapidly, risking inadequate coverage and a compromised cast.

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Cold saline

Cold water

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