Parts of the crater walls eventually collapse back into the crater, the vent is filled with loose material, and, if the crater still is deeper than the water table, the crater fills with water to form a lake, the lake level coinciding with the water table.
Poor Dentition. My provider likes to use poor dentition in his assessment as a billable diagnosis, however there is not really a good code to select. Sometimes he is referring to a patient who is missing teeth due to poor oral hygiene, sometimes it is a patient with alot of tooth decay, in this case, he is referring to a patient with loose wisdom teeth.
Tartar refers to mineral deposits on the teeth, both above and below the gums that have hardened. These deposits are easy to recognize since they tend to stain easily, and you may note places on the teeth with brown or yellow stains. These stains are usually not on the teeth themselves but to tartar, also called calculus, buildup. This buildup is distinct from plaque, which is caused by bacteria on the teeth, but both are usually present in the mouths of people who have poor oral hygiene.