Author/Authors :
Tavares, Warley Luciano Fonseca Departamento de Odontologia Restauradora - Faculdade de Odontologia - Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil , Rezende, Taia Maria Berto Faculdade de Odontologia - Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil , da Silva, Ingrid Gracielle Martins Laboratório de Microscopia e Microanálises - Departamento de Biologia Celular - Instituto de Ciências Biológicas - Universidade de Brasília, Brazil , Corrêa, Jose Raimundo Laboratório de Microscopia e Microanálises - Departamento de Biologia Celular - Instituto de Ciências Biológicas - Universidade de Brasília, Brazil , Henriques, Luiz Carlos Feitosa Departamento de Odontologia Restauradora - Faculdade de Odontologia - Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil , Sobrinho, Antônio Paulino Ribeiro Departamento de Odontologia Restauradora - Faculdade de Odontologia - Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
Abstract :
This study aimed to present a case series of refractory endodontic treatment leading to persistent apical periodontitis. All cases were submitted to scanning electron microscopic/energy-dispersive X-ray analysis (SEM/EDS) of the external surface of the surgically removed samples and identification of the elements present in the specimens. Carbon, oxygen and calcium were elements present in all of the cases in this study. The presence of microorganisms in close contact with the periapical surrounding tissues induced the perpetuation of the inflammation process. Despite the presence of other elements different from those normally expected in the tissues, we may not attribute any interference in the periapical response to them.
Keywords :
Extra Radicular Infection , Endodontic Failure , Bacterial Biofilm , Apical Periodontitis
