Fig. 1From: Impaction of lower third molars and their association with age: radiological perspectivesDemonstration of radiographic measurements William Sciller [8]: (1) The retromandibular space, measured between the lines of the anterior border of the ramus to the most distal point of the lower 2nd molar. (2) The length of the horizontal line on the widest area of the crown. (3) The length of the roots. (4) The distance between the highest points of the impacted lower third molar tooth to the occlusal line. (5) Angulation of the third molar refers to the angle formed between dental long axis of the third molar tooth to the occlusal planeBack to article page