 The blood-borne bacteria colonize on the implant and eventually get released from it.Depending on the type of material used to make the implant, it may be infused with antibiotics to lower the risk of infections during surgery.However, only certain types of materials can be infused with antibiotics, the use of antibiotic-infused implants runs the risk of rejection by the patient since the patient may develop a sensitivity to the antibiotic, and the antibiotic may not work on the bacteria.