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Odontogenic infections can be severe if not treated and are associated with mortality rate of 10 to 40%. [4] Furthermore, about 70% of odontogenic infections occur as periapical inflammation, i.e. acute periapical periodontitis or a periapical abscess. [3] The next most common form of odontogenic infection is the periodontal abscess. [3]
Periapical periodontitis may develop into a periapical abscess, where a collection of pus forms at the end of the root, the consequence of spread of infection from the tooth pulp (odontogenic infection), or into a periapical cyst, where an epithelial lined, fluid-filled structure forms.
Commonly known as a dental cyst, the periapical cyst is the most common odontogenic cyst. It may develop rapidly from a periapical granuloma , as a consequence of untreated chronic periapical periodontitis .
It is considered that these cell rests proliferate to form epithelial lining of various odontogenic cysts such as radicular cyst under the influence of various stimuli. They are named after Louis-Charles Malassez (1842–1909) who described them. Some rests become calcified in the periodontal ligament (cementicles).
Chronic periodontitis is initiated by Gram-negative tooth-associated microbial biofilms that elicit a host response, which results in bone and soft tissue destruction. In response to endotoxin derived from periodontal pathogens, several osteoclast-related mediators target the destruction of alveolar bone and supporting connective tissue such as the periodontal ligament.
A periodontal abscess involves a greater dimension of the gum tissue, extending apically and adjacent to a periodontal pocket. A pericoronal abscess may occur during an acute episode of pericoronitis in the soft tissue surrounding the crown of a partially or fully erupted tooth, usually around a partially erupted and impacted mandibular third ...
On February 4, 2019, Governor Gretchen Whitmer ordered that the Michigan Agency for Energy be transferred out of the department and into the Department of Environment, Great Lakes, and Energy as the Office of Climate and Energy. [10] In 2021 the Child Care Licensing Bureau was created within the Department of Licensing and Regulatory Affairs.
Acute OM of the jaws may give a similar appearance to a typical odontogenic infection or dry socket, but cellulitis does not tend to spread from the periosteal envelope of the involved bone. If the infection is not controlled, the process becomes chronic and visible signs may be present, including draining fistulas, loosening of teeth and ...