RESUMEN Introduction: In the context of a command of English, not all the persons concerned satisfy the requirements of a competent professional from a communication point of view. In the light of this evidence, the post-graduate courses have sought other ways of deepening the specialisation in English, in order to improve professional communication skills. Objective: Set out some considerations on the use of clinical cases in English as a tool to develop professional communication competence. Methods: Descriptive study at the Faculty of Stomatology of Havana in the first half of the academic year 2020-2021. The information was obtained through theoretical methods of analysis, and summaries of literature and documentary reviews on the subject. Results: The use of clinical cases in English led to the enrichment of the technical vocabulary of the speciality; it stimulated the use of synonyms related to stomatological language, and the difference between stomatologist and patient language. In addition, a didactic guide was designed in English with the vocabulary used for the presentation of clinical cases which serves as consultation material for stomatologists and teachers giving English for specific purposes. Conclusions: The use of clinical cases with all the discussions it generates undoubtedly helps to develop professional communication competence in English.