The age of the skull was determined by referring to the natural bone specimen and a panoramic radiograph, both of which suggest an age range of 5-9 years. There are 12 teeth in the maxillary arcade and 12 teeth in the mandibular arcade. The radiograph reveals that the apices of the mandibular permanent incisor and first molar roots are almost completely formed. Calcification of the crowns of the permanent canines, premolars and second molars is complete. The spheno-occipital synchondrosis is open.