How do calcium oxalate crystals inflict damage on the soft tissues of the mouth?

Answer

They physically puncture the tissues like microscopic needles

The danger posed by these crystals is primarily mechanical rather than chemical. When the plant tissue is crushed or chewed, the needle-like crystals are released and act like tiny glass shards, physically piercing the soft lining of the mouth, tongue, and throat. This physical trauma causes the immediate, acute pain, burning sensation, and swelling associated with ingestion.

How do calcium oxalate crystals inflict damage on the soft tissues of the mouth?
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