The injuries to the buccal mucous membrane in the geriatric patients constitute a problem of buccal health between the rehabilitated with removables dental prosthesis. With the objective of determinate the clinical forms of the protesicases aggressions to the buccal mucous membrane, your localization and irregularity associated as well as identifying protesicoses inadequate and noxious habits in these patients an observational, descriptive and transversal study was carried out in the dental clinical “Andres Ortiz Junco”, of the Guines municipality Mayabeque from October 2019 to October 2021. The universe 360 patient and the sample 80 selected for a sampling not probabilistico, deliberate and opportunistic. Signed two similar groups numerically, one with acute injuries and other with injuries cronicases. The variables in study went: form acute and cronicases of the protesica aggressions to the mucous membrane, localization areas, protesica irregularity and inadequated and noxious protesicoses habits. Carried out a cross-examination, the buccal examination and of the prosthesis in use. The statistical analysis carried out through the docima X2 y Duncan. As a result it are obtained that the 38, 75 % of the diagnosed injuries were subprotesises stomatitis and a 28,75 % were traumatic ulcers.The 37, 40 % with affectation of the palate. The 39,02 5 of the protesises it had as protesica irregularity the compresion evelope.The 48,75 of the patients were accustomed the protesises in na endless way,the 41,25 % with a faulty hygiene and a 53,75 % were smoking. Of which it is concluded that the chronic more frequente lesion went the suprotesises stomatitis and of the acute the traumatic ulcer,the more affected are the plate.