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      Etiología, fisiopatología y tratamiento de la periodontitis apical. Revisión de la literatura Translated title: Etiology, pathophysiology and treatment of apical periodontitis. Literature review

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          Abstract

          RESUMEN La periodontitis apical (PA) es una inflamación y destrucción de los tejidos periapicales comúnmente causada por bacterias como resultado de caries o traumatismos dentales. Aunque los mecanismos de defensa del huésped están activados, la acción bacteriana provoca la destrucción apical. Se ha identificado la microbiota relacionada con esta patología en el interior del conducto radicular. Enterococcus faecalis es un coco grampositivo presente en casos clínicos persistentes de PA. Un tratamiento de conducto puede eliminar los agentes infecciosos. Sin embargo, si la PA persiste, se puede considerar un retratamiento del conducto radicular o una apicectomía. Aunque el diagnóstico definitivo de PA se logra mediante un examen histopatológico, los estudios de investigación confirman que es más probable que la tomografía computarizada de haz cónico detecte PA que la radiografía periapical (RP). El objetivo de esta revisión de la literatura es describir la etiología, índice periapical, clasificación de la periodontitis apical: aguda y crónica, así como pruebas diagnósticas adicionales y alternativas de tratamiento para su abordaje clínico.

          Translated abstract

          ABSTRACT Apical Periodontitis (AP) is an inflammation and destruction of the periapical tissues commonly caused by bacteria as a result of dental caries or trauma. Although the host's defense mechanisms are activated, the bacterial action causes apical destruction. The microbiota related to this pathology has been identified inside the root canal of teeth. Enterococcus faecalis is a gram-positive cocci present in persistent clinical cases of AP. A root canal treatment can eliminate the infectious agents. However, if AP persists, a root canal retreatment or an apicoectomy can be considered. Although the definitive diagnosis of AP is achieved by histopathological examination, research studies confirm that cone beam computed tomography is more likely to detect AP than periapical radiography (RP). The objective of this literature review is to describe the etiology, periapical index, apical periodontitis classification: acute and chronic, as well as additional diagnostic test and treatment alternatives for its clinical approach.

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          Most cited references42

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          The periapical index: a scoring system for radiographic assessment of apical periodontitis.

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            On the causes of persistent apical periodontitis: a review.

            Apical periodontitis is a chronic inflammatory disorder of periradicular tissues caused by aetiological agents of endodontic origin. Persistent apical periodontitis occurs when root canal treatment of apical periodontitis has not adequately eliminated intraradicular infection. Problems that lead to persistent apical periodontitis include: inadequate aseptic control, poor access cavity design, missed canals, inadequate instrumentation, debridement and leaking temporary or permanent restorations. Even when the most stringent procedures are followed, apical periodontitis may still persist as asymptomatic radiolucencies, because of the complexity of the root canal system formed by the main and accessory canals, their ramifications and anastomoses where residual infection can persist. Further, there are extraradicular factors -- located within the inflamed periapical tissue -- that can interfere with post-treatment healing of apical periodontitis. The causes of apical periodontitis persisting after root canal treatment have not been well characterized. During the 1990s, a series of investigations have shown that there are six biological factors that lead to asymptomatic radiolucencies persisting after root canal treatment. These are: (i) intraradicular infection persisting in the complex apical root canal system; (ii) extraradicular infection, generally in the form of periapical actinomycosis; (iii) extruded root canal filling or other exogenous materials that cause a foreign body reaction; (iv) accumulation of endogenous cholesterol crystals that irritate periapical tissues; (v) true cystic lesions, and (vi) scar tissue healing of the lesion. This article provides a comprehensive overview of the causative factors of non-resolving periapical lesions that are seen as asymptomatic radiolucencies post-treatment.
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              Biofilms and apical periodontitis: study of prevalence and association with clinical and histopathologic findings.

              This study evaluated the prevalence of bacterial biofilms in untreated and treated root canals of teeth evincing apical periodontitis. The associations of biofilms with clinical conditions, radiographic size, and the histopathologic type of apical periodontitis were also investigated. The material comprised biopsy specimens from 106 (64 untreated and 42 treated) roots of teeth with apical periodontitis. Specimens were obtained by apical surgery or extraction and were processed for histopathologic and histobacteriologic techniques. Bacteria were found in all but one specimen. Overall, intraradicular biofilm arrangements were observed in the apical segment of 77% of the root canals (untreated canals: 80%; treated canals: 74%). Biofilms were also seen covering the walls of ramifications and isthmuses. Bacterial biofilms were visualized in 62% and 82% of the root canals of teeth with small and large radiographic lesions, respectively. All canals with very large lesions harbored intraradicular biofilms. Biofilms were significantly associated with epithelialized lesions (cysts and epithelialized granulomas or abscesses) (p 0.05). Extraradicular biofilms were observed in only 6% of the cases. The overall findings are consistent with acceptable criteria to include apical periodontitis in the set of biofilm-induced diseases. Biofilm morphologic structure varied from case to case and no unique pattern for endodontic infections was identified. Biofilms are more likely to be present in association with longstanding pathologic processes, including large lesions and cysts. Copyright 2010 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.
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                Author and article information

                Journal
                odonto
                Avances en Odontoestomatología
                Av Odontoestomatol
                Ediciones Avances, S.L. (Madrid, Madrid, Spain )
                0213-1285
                2340-3152
                March 2023
                : 39
                : 1
                : 9-16
                Affiliations
                [4] Dublín orgnameThe Open College Irlanda
                [1] Lima Lima orgnameUniversidad Nacional Federico Villarreal orgdiv1Facultad de Odontología Peru
                [3] Lima orgnameMinisterio de Salud orgdiv1Centro Nacional de Epidemiología, Prevención y Control de Enfermedades Perú
                [2] Lima Lima orgnameUniversidad Nacional Federico Villarreal orgdiv1Escuela Profesional de Posgrado Peru
                Article
                S0213-12852023000100003 S0213-1285(23)03900100003
                d2a4ed91-3ac2-44f2-904e-b27160bd5138

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 International License.

                History
                : 22 January 2022
                : 12 April 2021
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 42, Pages: 8
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                SciELO Spain

                Categories
                Artículos

                periapical index,periodontitis apical,microbiota apical,lesión osteolítica,índice periapical,Apical periodontitis,apical microbiota,osteolytic lesion

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