Forensic dentistry and sexual dimorphism are distinct concepts. Still, they are related due to the usefulness that the first may have in the second, and this review focuses on them. A scoping review will be performed according to the Joanna Briggs Institute’s methodology. Scientific databases and grey literature will be used, and the following keywords will be applied: amelogenin, analyses, sex determination, and human identification. This scoping review will include in vitro studies concerning the goal of this review. This scoping review will deepen our knowledge concerning using teeth and amelogenin genes in sex identification in a forensic context. According to the available data, it will help implement guidelines for human remains identification. This protocol was registered with the Open Science Framework.