Qatar DHP Endodontics Practice Questions - Qatar DHP Endodontics Specialist Qualifying Exam

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Which microorganism is most frequently associated with persistent and secondary endodontic infections in previously treated teeth?

Streptococcus mutans Enterococcus faecalis Porphyromonas gingivalis Lactobacillus acidophilus

Correct Answer:

Enterococcus faecalis

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