GC.6989
Mandible, Posterior portion of, the right half of a, showing hyperostosis.
Excised by Sir Patrick Heron Watson from a child in whom the hypertrophy was supposed to be related to the eruption of the permanent teeth. Anterior to the right permanent 1st molar several deciduous teeth were left attached to the gum.
The specimen consists of the posterior part of the right half the body of the mandible with the angle and the commencement of ramus. The bone is uniformly hypertrophied forming a somewhat globular mass whose facio-lingual diameter measures 30 mm. The surface of the bone has lost its characteristic compact appearance, a is finely porous and the bone is light in weight* Posterior to the 1st molar tooth there is a smooth cup -shaped cavity which probably contained the crown of an incomplete and unerupted 2nd permanent molar. On section the bone is uniformly affected and consists of close cancellous bone with some vascular channels and irregular spaces in it.
Late nineteenth/early twentieth century
