RESUMEN
Introduction:Down Syndrome (DS) patients have increased susceptibility to the development of periodontal diseases by the occurrence of several factors, such as inadequate hygiene, mouth breathing, dental morphology, leukocyte reduction and increased inflammatory mediators. Objective:This study aimed to review the literature on the main aspects of DS and present a clinical case of a DS patient treated with basic periodontal therapy and free gingival graft surgery. Case report: DS patient, leucoderma, aged 26 years showed gingival recession and little amount of keratinized tissue in the area of teeth #31 and #41. After surgery, there was an increase in the keratinized tissue band. Conclusion: The free gingival graft surgery performed in DS patients was effective, as the increase of keratinized tissue band occurred.