1 Dental implants can also promote dental health. 2  When a tooth is missing, the jaw bone is not stimulated, which can cause the bone to deteriorate. 3  An implant stimulates the bone as a natural tooth would, helping to prevent bone loss.
Longitudinal waves, also known as l-waves, are waves in which the displacement of the medium is in the same direction as, or the opposite direction to, the direction of travel of the wave.
And the essential characteristic of a longitudinal wave that distinguishes it from other types of waves is that the particles of the medium move in a direction parallel to the direction of energy transport.