Beside the already analysed bioanthropometric characteristics of the lower jaw, additional measurement of parameters insufficiently discussed in reference literature were performed in our study. On the basis of the obtained data it was possible to define relevant biometrical relations in the region of the lower jaw branch and anatomical regions that are especially important to the use of conduction anaesthesia. All measurements were defined on the basis of anteroposterior (horizontal) and vertical directions. The relation between different anatomical structures of the lower jaw interior branch and foramen mandibulae served as a focal point. When related to anteroposterior plane the mandibular foramen was located precisely in the middle of the distance between crista temporalis and posterior ramus ridge. Viewed in vertical direction the lowest point of mandibular opening was slightly closer to the mandibular angle than to incisure of mandible, meaning that in the majority of macerated skulls mandibular foramen had a relatively low position.