Oral complications caused by radiation therapy to the head and neck include the following: Fibrosis (growth of fibrous tissue) in the mucous membrane in the mouth. Tooth decay and gum disease. Breakdown of tissue in the area that receives radiation. Breakdown of bone in the area that receives radiation.
A landform is any natural formation of rock and dirt, found on Earth. A landform can be as large as a mountain range, or as small as a hill. It can be as large as a continent, or as small as a pond.
Landform elements are parts of a high-order landforms that can be further identified and systematically given a cohesive definition such as hill-tops, shoulders, saddles, foreslopes and backslopes.Some generic landform elements including: pits, peaks, channels, ridges, passes, pools and plains.lementary landforms (segments, facets, relief units) are the smallest homogeneous divisions of the land surface, at the given scale/resolution. These are areas with relatively homogeneous morphometric properties, bounded by lines of discontinuity.