Multiple Idiopathic External Apical Root Resorption: A Case Report of a Rare Entity.

Idiopathic root resorption is characterized by the gradual destruction of tooth roots without a clear cause; the possible underlying factors include genetic predispositions, immune system abnormalities, or environmental influences. This case report highlights an unusual instance of a 27-year-old young female patient who presented with multiple decayed teeth; the orthopantomographic examination incidentally revealed extensive root resorptions. Thorough biochemical investigations such as acid phosphatase, alkaline phosphatase, thyroid-stimulating hormone (TSH), thyroxine (T4), and triiodothyronine (T3), as well as calcium, were within normal limits, with no identifiable local or systemic factors, leading to a diagnosis of idiopathic root resorption.