James Frizzell, a Niagara, Ontario-based dentist, earned his doctor of dental surgery (DDS) from the University of Toronto, and opened his own dental practice in 1993. Through his private Niagara office, James Frizzell, DDS, offers not only oral healthcare by appointment, but also walk-in emergency care. When a patient experiences a dental emergency, it means that the problem in question is pressing enough as to endanger the stability of a tooth, gums, or even jawbone tissues. Oftentimes, dental emergencies result from a major breach in a tooth or teeth that happens while participating in sports or even when chewing on a particularly hard piece of food. In some cases, teeth may be dislodged entirely, necessitating immediate medical attention. Besides teeth damaged from trauma, dental emergencies can take the form of advanced infections of oral tissues. These infections, called abscesses, are very dangerous and can present with severe pain, facial swelling, and fever. Oral infections of this character can be especially perilous for patients with compromised immune systems. Some oral health emergencies, such as jaw fractures, may require treatment by specialists like maxillofacial surgeons.