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Periapical periodontitis of some form is a very common condition. The prevalence of periapical periodontitis is generally reported to vary according to age group, e.g. 33% in those aged 20–30, 40% in 30- to 40-year-olds, 48% in 40- to 50-year-olds, 57% in 50- to 60-year-olds and 62% in those over the age of 60. [13]
It may develop rapidly from a periapical granuloma, as a consequence of untreated chronic periapical periodontitis. [1] Periapical is defined as "the tissues surrounding the apex of the root of a tooth" and a cyst is "a pathological cavity lined by epithelium, having fluid or gaseous content that is not created by the accumulation of pus." [2]
Periapical radiograph showing peri-radicular radiolucency and bone loss caused by an odontogenic infection under the roots of two anterior teeth in a 30-year-old patient An odontogenic infection is an infection that originates within a tooth or in the closely surrounding tissues. [ 1 ]
For periapical radiographs, the film or digital receptor should be placed parallel vertically to the full length of the teeth being imaged. [3] The main indications for periapical radiography are [4] Detect apical inflammation/ infection including cystic changes; Assess periodontal problems; Trauma-fractures to tooth and/or surrounding bone
In 1890, W.D. Miller, considered the father of oral microbiology, was the first to associate pulpal disease with the presence of bacteria. [11] This was confirmed by Kakehashi, who, in 1965, proved that bacteria were the cause of pulpal and periradicular disease in studies using animal models; pulpal exposures were initiated in both normal and germ-free rats, and while no pathologic changes ...
Periapical abscess: The result of a chronic, localized infection located at the tip, or apex, of the root of a tooth. [1] Periodontal abscess: begins in a periodontal pocket (see: periodontal abscess) Gingival abscess: involving only the gum tissue, without affecting either the tooth or the periodontal ligament (see: periodontal abscess)