Peridontal diseases are among the most common diseases affecting human beings, and are the second major buccal health problem worldwide. Objective: To assess the relation between occlusion overloads and interferences and periodontal disease severity. Method: Descriptive, retrospective analytical study of 100 patients who attended to the Periodontal Consultation in Cienfuegos Dental Clinic between January, 2002 and January, 2007, with diagnosis of periodontitis and occlusal overload and

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... nces. The variables were: periodontal pocket, gingival retraction, dental mobility, and differences between teeth groups with and without occlusal overload and interferences were determined, according to these variables. Results: There were significant differences between both groups (with and without overloads and interferences) regarding each variable. Conclusions: Our results show the relation between these two factors and periodontal disease.