Efficacy of course use of chewing gum for alveolar bone reinforcement was studied with the use of digital X-ray-graphy at three levels of interalveolar bone in 93 patients with clinically different periodontal tissue conditions. It was established that optical density of alveolar bone is higher on the working side than on the inactive side and it depended upon clinical status of periodontal tissues. Top of the interalveolar bone had the lowest density, the middle part - the highest. Course use of chewing gum in the optimal regimen increased interalveolar bone optical density, at that to a greater extent on the inactive side and in the upper part of it.