Waldent Dental Lead Apron + Thyroid Shield Collar. Waldent Lead Apron Waldent Thyroid Shield Collar 0.58mm Lead equivalency (Thyroid Shield Collar). 0.34mm Lead equivalency (lead apron). Thyroid Sheild Collar is type of apron especially designed to protectThyroid Gland from exposure of X-Rays during Dental Imaging as it ismost vulnerable to X-Ray Exposure.
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