Engström H, Sagne S
Swed Dent J. 1980;4(5):169-75.
The root anatomy of the lower third molars and the distance from apex to the mandibular canal were examined in radiographs. Three different materials were examined; one medieval with erupted teeth, one modern with erupted teeth and one modern with impacted third molars. Uncomplicated root anatomy was recorded for 75% of the teeth in the medieval material and for 20% in the modern materials. A position of the root apex near the mandibular canal was more frequently observed in the modern material.
