I've never heard of the term liver blood clots in relation to dental implants. You may want to ask the oral surgeon in the Oral Maxillofacial Surgery forum here.
i think i was told they are liver blood clots??
I'm not sure. I would imagine its just normal tissue healing and that due to the surgery, it was inflammed and irritated. The tissue may have grown over the implants and the oral surgeon wanted to remove them to expose the implants for further treatment. That would be my guess.