Objective To characterize the microbiota of teeth with endodontic treatment failure by 16S
ribosomal RNA genetic sequencing (GS) and PCR at the different phases of the endodontic …

Introduction Most studies of the microbiota in root canal–treated teeth focused only on the
main canal, not distinguishing regions nor incorporating the intricate anatomy in the …

The quantification of ten microorganisms at the root ends and in the surrounding
periradicular lesions was performed. Thirty 3 mm samples root ends and 30 samples of the …

Introduction: The failure of endodontic treatment is usually caused by persistent/secondary
intraradicular infections and Enterococcus faecalis has been considered to be the main …

Chávez de Paz LE, Dahlén G, Molander A, Möller Å, Bergenholtz G. Bacteria recovered from
teeth with apical periodontitis after antimicrobial endodontic treatment. International …

Posttreatment apical periodontitis is usually associated with persistent or secondary
intraradicular infection. This study evaluated the presence and relative levels of 28 bacterial …

OBJECTIVE: In this study, we aimed to investigate the occurrence of several microbial
species in cases of failed endodontic therapy by means of the polymerase chain reaction …

Apical periodontitis is an inflammatory disease of the dental periradicular tissues triggered
by bacteria colonizing necrotic root canals. Primary apical periodontitis results from the …

This study evaluated the microbiota of root canals undergoing retreatment. The most
prevalent taxa detected by checkerboard included Propionibacterium species …

Introduction: It was the aim of the present study to evaluate root canal samples for the
presence and numbers of specific species as well as for total bacterial load in teeth with …