Medical Definition of ODONTOLOGY. 1. : a science dealing with the teeth, their structure and development, and their diseases.2. : forensic odontology. â odonÂ·toÂ·logÂ·iÂ·cal \-Ëdaent-ËdÃ¤nt-Él-Ëaej-ËÃ¤j\ i. kÉl adjective. : a science dealing with the teeth, their structure and development, and their diseases. 2. : forensic odontology.
1 See a doctor if canker sores are accompanied by fever, last more than three weeks, or the affected individual has difficulty swallowing.  Multiple factors may cause canker sores, including injury to the mouth, acidic or spicy foods, vitamin deficiencies, hormones, stress, or autoimmune disorders.
More often, canker sores are caused by a tissue injury in the mouth or stress. Another canker sore cause is foods with a high citrus content such as oranges and tomatoes. Medical issues such as Celiac disease, Crohnâs disease, or an impaired immune system may also trigger canker sores to appear.Oral herpes is caused by a virus that is spread through body fluids.anker sores are caused by damage to the mouth, foods or an underlying disease, while oral herpes sores are caused by a virus. Eventually, cold sores will become crusted while canker sores will simply go away.