An implant is a medical device or material that is placed inside the body to replace a missing structure, support a biological function, or deliver medication over time. Implants are commonly used in many fields of medicine, such as dental implants to replace missing teeth, orthopedic implants to support bones and joints, and contraceptive implants to prevent pregnancy. They are typically made from biocompatible materials like titanium, silicone, or specialized plastics so the body can tolerate them safely. Depending on the type, implants may be temporary or permanent and usually require a minor surgical procedure, followed by a period of healing and monitoring