Introduction: Cleidocranial dysostosis is a syndrome defined by three characteristic findings: clavicular aplasia, retarded cranial ossification, and autosomic dominant hereditary transmission, with completed penetrance and full expression. However, the diagnosis cannot only be made based on those finding, because the polymorphism and extension of the lesions of this disease is important. Therefore, in this disease we can see upset in the second teething, short stature or dwarf, persistence of the biconvex appearance of vertebral body, bone hypoplastic iliac, retarded pubis branch ossification, wedge shape distal phalanges or with brachymesophalangia of the forefinger and fifth finger.
Clinical case: We describe a 20 years old man, with cleidocranial dysostosis, without familiar antecedent (probable mutation), that come to our center for treatment of denture pathology with disabled eating, because anomalous distribution and eruption. He had clavicle agenesis, cranial ossification upset with wormian bones, vertebral bodies biconvex, superior maxillary hypoplastic, and dental packed in the superior maxillary and jawbone.
Conclusions: Cleidocranial dysostosis is a hereditary disease, which can be of spontaneous apparition (mutation), has a grand polymorphism, affect the osseous development, predominate in the middle line membranous bone and is an entity of radiologic diagnosis.