Yes. Bone loss occurs when your jaw bone is no longer stimulated by the natural pressure of chewing and biting. Your tooth transmits this force through the root and into your jaw bone, which keeps your jaw bone healthy.
When you lose a tooth, this process stops, and the jaw bone tends to weaken. Since the post of the dental implant is placed directly into the jaw bone and acts as a tooth root, it restimulates your jaw bone by transmitting the force of chewing and biting once again.