[The bone tissue of the jaws in congenital and acquired deformities]

Biophysical parameters of the jam bones were examined in patients with congenital and acquired deformations. Ash content, density, mineral content, and microhardness were estimated in 58 patients aged 17 to 28. The mean values of these characteristics were found to be unrelated to the individual features and the type of the changes in the bone tissue, associated with deformations of the jaws. Frequency ranging of the individual values helped obtain a more objective picture of the bone tissue status. Bone tissue density was found increased in congenital maxillary and mandibular deformations. These data evidence a lowered plasticity of the bone tissue in the patients with congenital deformations of the jaw bones.