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x-ray of external root resorption premolar 25. External replacement root resorption (ERRR) occurs due to replacement of the root surface with bone, i.e. ankylosis. ERRR can be further categorized as transient or progressive depending on the extent of periodontal ligament damage with the latter resulting in complete root resorption. [16]
External resorption can be classified into four categories by its clinical and histologic manifestations: external surface resorption, external inflammatory root resorption, replacement resorption, and ankylosis.
The alveolar support of the affected tooth will be lowered due to continuous replacement resorption of the root. This process will stop with the appearance of root fractures and shed crown, and changes in dentition, especially the anterior teeth, can be observed in this stage. Symptoms such as infraocclusion and asymmetry in the smile arc may ...
Pulp necrosis with draining fistula, crown discoloration and external root resorption are reported consequences of primary tooth replantation. Tooth dilaceration, impaction and deviation from proper eruption path have been reported to have occurred in permanent teeth as a result of reimplantation of primary teeth. [4]
In the dental specialty of endodontics, periradicular surgery is surgery to the external root surface. Examples of periradicular surgery include apicoectomy, root resection, repair of root perforation or resorption defects, removal of broken fragments of the tooth or a filling material, and exploratory surgery to look for root fractures.
The MTA will provide structure and strength to the tooth by replacing the resorbed tooth structure. In external resorption, after root canal therapy is performed, the flap is raised over the tooth and the defect removed from the root surface with a round bur. Retrograde application of MTA to the root surface is then completed.
Dental restoration, dental fillings, or simply fillings are treatments used to restore the function, integrity, and morphology of missing tooth structure resulting from caries or external trauma as well as the replacement of such structure supported by dental implants. [1]
Cementoblastoma is slow growing well-defined, radiopaque mass, with a radiolucent peripheral line, that overlies and obliterates the tooth root typically presenting with root resorption. [6] It has a rounded or sunburst appearance. Differential diagnosis include severe hypercementosis, chronic focal sclerosing osteomyelitis, and osteoma. Histologic