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Thus the tooth must first be endodontically treated.
The greatest incidence occurs in endodontically treated teeth and in patients older than 40 years of age.
The two teeth in the middle have been endodontically treated, but do not have post and cores.
Should an endodontically treated tooth not be properly protected, there is a chance of it succumbing to breakage from normal functional forces.
The tooth may be endodontically treated whereby the pulp is removed and replaced by gutta percha.
Because they are weaker after the additional removal of tooth structure that occurs during a root canal procedure, endodontically treated teeth require proper protection against vertical root fracture.
If a NICO lesion is suspected in relation to an endodontically treated tooth, if possible, periradicular surgery and curettage should be attempted, not extraction.
Bacteremia (bacteria in the bloodstream) can be caused by dental procedures, particularly after dental extractions, but endodontically treated teeth alone do not cause bacteremia or systemic disease.
Contrary to popular belief, endodontically treated teeth are not brittle after being devitalized according to the following study -CM Sedglay & Messer 1992 Journal of Endodontics.
However, some patients with long, frustrating histories of pain associated with endodontically treated teeth have been presented the treatment option of tooth extraction followed by periapical curettage in an attempt to alleviate pain.
A crownlay is a hybrid dental restoration typically placed over an endodontically treated tooth that is more conservative than a normal full coverage crown, but less conservative than a normal onlay.
Price's research fit into a wider body of testimonials in the dental literature of the 1920s, which contributed to the widespread acceptance of the practice of extracting, rather than endodontically treating, infected teeth.
In the same year Mader et al. studied the morphological characteristics of the smear layer in teeth that were endodontically instrumented with k type files and irrigated with 5.25% NaOCl.
When crowns are used to restore endodontically treated teeth, they reduce the likelihood of the tooth fracturing due to the brittle devitalized nature of the tooth and provide a better seal against invading bacteria.
Endodontically treated teeth are prone to extraction mainly due to non-restorable carious destruction and to a lesser extent to endodontic-related reasons such as endodontic failure, vertical root fracture, or perforation (procedural error).
Deciduous tooth which had been treated endodontically with materials containing Formecresol which in combination with tissue protein is antigenic and may elicit a humoral or cell-mediated response like rapid buccal expansion of cyst.
In addition, the practice of recommending the extraction of endodontically treated teeth for the prevention of NICO, or any other disease, is unethical and should be reported immediately to the appropriate state board of dentistry.
Sufficient vertical height of tooth structure that will be grasped by the future crown is necessary to allow for a ferrule effect of the future prosthetic crown; it has been shown to significantly reduce the incidence of fracture in the endodontically treated tooth.
When a tooth is not endodontically treated, the remaining tooth structure will invariably provide the 2 mm height necessary for a ferrule, but endodontically treated teeth are notoriously decayed and are often missing significant solid tooth structure.
The post and core buildup serve to aid in retention of a traditional crown but increase the likelihood of root fracture because chewing forces are directed vertically along the hollowed out and subsequent weaker remnants of the internal surfaces of an endodontically (root canal treated) tooth.
The use of a post and core does not strengthen the tooth prior to restoration with a crown; rather, it may contribute to the weakening of the tooth structure, as the forces placed upon the future prosthetic crown and core are now transmitted along virtually the entire length of the brittle, endodontically treated tooth.