Dental Corpus PRIMARY is an interactive application for dental students, dentists, health professional, assistants and pediatric patients. The application is very functional for understanding and visualizing the complexity of root anatomy of the primary (deciduous) teeth. It can also help the user learn detailed information about the size, the morphology and the development of each tooth, emphasized on the differences between primary and permanent teeth. 3D tooth models were created according to various studies about primary teeth morphology, gathered from the latest dental papers and references. A combination of X-rays and illustrations during primary teeth development, supported by a plethora of references make this app a unique tool for any educational purpose. There is also the possibility to obtain all this information in printable pdf version.