A dental implant replaces the entire tooth — root and all. A small titanium screw is surgically placed into the jawbone where the missing tooth root used to be. Over 3–6 months the bone grows around and fuses to the titanium in a process called osseointegration. Once fused, a connector (abutment) and a custom crown are attached on top. The result looks, feels, and functions like a natural tooth.
When a tooth is lost — through extraction, trauma, or decay — the jawbone underneath begins to shrink because it no longer receives stimulation from a tooth root. Within a year, you can lose 25% of bone width in the extraction site. Adjacent teeth tilt into the gap. The tooth above or below drifts. Chewing force is distributed unevenly. An implant is the only tooth replacement that stops this bone loss, because the titanium root transmits chewing pressure directly into the bone — just like a natural root does.
You need a dental implant when a tooth is already missing or must be extracted and cannot be saved by a root canal or crown. An implant is preferable to a bridge in most cases because a bridge requires grinding down the two healthy adjacent teeth to support the false tooth — sacrificing perfectly healthy tooth structure. An implant leaves those neighbouring teeth completely untouched.