Radiology Practice Test 2026 – Your All-In-One Guide to Exam Success!

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What is cross contamination?

Chemical reaction when x-rays are taken

Spreading plaque from one tooth to another

Spreading microorganisms from one person to another

Cross contamination refers to the unintentional spread of harmful microorganisms from one surface or object to another. This can occur via direct contact, airborne transmission, or contact with contaminated objects. It is not related to chemical reactions or dental procedures, so options A and D can be eliminated. Option B refers to the spread of plaque, which is not necessarily harmful microorganisms and may not always lead to disease transmission. Therefore, option C is the most accurate choice for cross contamination.

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Improper root canal procedure

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