I lost my healing cap. I probably ingested it. My dentist wants me to pay for another. Should he be charging me for a new one?

While I would not charge a fee in this situation, it is within the dentists rights to charge if they want to.  I personally think it harms the business, but charging for this is a common thing in some clinics.  Many "chain" clinics have low fees, but charge for every little thing that is often included in the fees from another office.  If you are at a clinic that is a franchise, or a chain, then I would expect you to be charged for this.

Hello
It´s a problem, you should go with your dentist and look for an optimal solution
Regards.

More importantly make sure the healing cap passed through your intestinal tract. Once you have been cleared  by a Gastroenterologist then proceed with another placement of a healing cap.  Based on the office policies healing caps can be replaced free of charge or have a slight fee, this depends on the office. Good luck.

Hello

If you lost the healing cap you have to pay for it. Converse with your doctor to handle de situation. 

I would not expect a patient  to pay for a healing abutment / cover that was ingested . There is a cost to the dentist for a new one but I think it would be unreasonable for the patient to pay . 

One  could argue that it may have not been tightened to a high enough torque allowing  it to loosen and  so be lost.