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.
Causes of Canker Sores. 1  Canker sores have many causes. 2  Minor injuries to the mouth can trigger a canker sore. Examples are from a rough food or a hard toothbrush. 3  Food allergies or irritants may also be a trigger. 4  Vitamin deficiencies can also be a cause. A vitamin deficiency can occur if your child is a picky eater.