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An ectopic tooth, also known as an impacted tooth, is a tooth that develops in an abnormal position and fails to erupt into its normal location in the oral cavity. [ 1 ] [ 2 ] Ectopic teeth can cause a variety of symptoms, such as pain, swelling, and infection, and they can lead to more serious complications if left untreated.
Because impacted teeth do not erupt, they are retained throughout the individual's lifetime unless extracted or exposed surgically. Teeth may become impacted because of adjacent teeth, dense overlying bone, excessive soft tissue or a genetic abnormality. Most often, the cause of impaction is inadequate arch length and space in which to erupt.
Impacted wisdom teeth are classified by their direction of impaction, their depth compared to the biting surface of adjacent teeth and the amount of the tooth's crown that extends through gum tissue or bone. Impacted wisdom teeth can also be classified by the presence or absence of symptoms and disease. Screening for the presence of wisdom ...
Impacted wisdom teeth happen when there's not enough room in your mouth for your third molars to emerge and they get stuck under your gum line. Why impacted wisdom teeth are so dangerous Skip to ...
Odontogenic cysts are a less common pathology of the impacted wisdom tooth with some estimates of prevalence from 0.64% to 2.24% of impacted wisdom teeth. [ 37 ] [ 38 ] They are described as ‘cavities filled with liquid, semiliquid or gaseous content with odontogenic epithelial lining and connective tissue on the outside’.
These teeth do not have a precursor tooth that is blocking their path. These teeth tend to erupt partially but then fail to erupt as the time goes on. Profitt stated that only the posterior teeth are the ones to be affected and all the teeth which are distal to the affected tooth are also affected.
Malocclusion is a common finding, [22] [23] although it is not usually serious enough to require treatment. Those who have more severe malocclusions, which present as a part of craniofacial anomalies, may require orthodontic and sometimes surgical treatment (orthognathic surgery) to correct the problem.
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