excess of the mucous membrane of the alveolar process in the form of a movable ridge. Its typical location is the anterior section of the toothless, more often the upper, alveolar process. The “dangling” comb creates difficulties in prosthetics with removable prostheses, since their fixation is disrupted and the mucous membrane is damaged. To ensure effective prosthetics, the comb is removed, and with little mobility, a special impression is used. The reasons for the formation of the ridge are not entirely clear. In systemic periodontal disease with rapidly developing atrophy of the alveolar process after tooth extraction, the sclerosed gum creates this excess. This may be a consequence of the reactive growth of the mucous membrane of the alveolar process under high pressure, for example, when using a full prosthesis of the upper jaw, when only the front teeth are preserved on the lower one, and the defect of small and large molars is not implicated by the prosthesis.
