The X-ray endpoint test is not used on tissues fixed in which fixative because mercury interferes?

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Multiple Choice

The X-ray endpoint test is not used on tissues fixed in which fixative because mercury interferes?

Explanation:
The X-ray endpoint test for decalcification relies on detecting changes in radiodensity as calcium is removed from mineralized tissues. Mercury from fixatives such as Zenker's is radiopaque and remains bound in the tissue, which can obscure or falsely alter the X-ray reading. This interference makes it unreliable to use the X-ray endpoint test on tissues fixed in Zenker's fixative. Other fixatives listed do not introduce heavy radiopaque metals, so the X-ray endpoint assessment isn’t compromised there.

The X-ray endpoint test for decalcification relies on detecting changes in radiodensity as calcium is removed from mineralized tissues. Mercury from fixatives such as Zenker's is radiopaque and remains bound in the tissue, which can obscure or falsely alter the X-ray reading. This interference makes it unreliable to use the X-ray endpoint test on tissues fixed in Zenker's fixative. Other fixatives listed do not introduce heavy radiopaque metals, so the X-ray endpoint assessment isn’t compromised there.

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