Medical science now uses corallines in the preparation of dental bone implants. This type of over denture gains support from both the dental implants and intraoral tissues. The prerequisites for long-term success of osseointegrated dental implants are healthy bone and gingiva. Synthetic sponges include personal and household cleaning tools, breast implants, and contraceptive sponges. She has consistently denied in interviews ever having breast implants. In 2011, FDA reported issues in the investigation of safety of silicone gel-filled breast implants. In 2015, she became known for her extremely large breast implants. Thoracic endometriosis occurs when endometrial tissue implants in the lungs or pleura. There has been considerable controversy within the culturally deaf community over cochlear implants. Kirkland is also a health activist including advocating for women harmed by breast implants. It is a study of the performance and function of biomaterials used for orthopedic implants. Much of the strongest objection to cochlear implants has come from the Deaf community. Nanoporous materials are emerging throughout the biomedical industry in drug delivery, implants, and tissue engineering. MRSA infection can occur associated with implants and joint replacements. Silver is incorporated into medical implants and devices such as catheters.