In this type, the tooth roots are replaced by screws, cylinders, or blades that are usually made of titanium or ceramic material. The implant is surgically drilled into the jawbone that helps to hold the artificial teeth in place. Thus, these implants lie completely inside the jawbone, well below the gums. However, artificial teeth are not directly connected to endosteal implants. So, once the dental implant is inserted into the jawbone, a post is connected to the implant. The artificial tooth is then securely placed over the post. In most cases, two surgeries are needed to connect the teeth with the dental implant.
In the first surgery, the screw- or cylinder-shaped implants are wrapped with Hydroxylapatite (HA), and then drilled into the jawbone. HA is one of the important components of the bone. So, coating the implant with this bone mineral facilitates its acceptance, and prevents any kind of bad reaction with the jawbone. HA also encourages growth of natural bone around the implant. The gum tissue around the implant is then stitched. The healing of gum tissue as well as bone regeneration surrounding the implants take up to 6 months. In the second surgery, posts are then attached to the implant for fixing the artificial teeth.