U Sjögren

Therapy-resistant foreign body giant cell granuloma at the periapex of a root-filled human tooth.

P. Nair, P N Nair, U Sjögren, 1990, Journal of endodontics.

Microbiologic analysis of teeth with failed endodontic treatment and the outcome of conservative re-treatment.

U Sjögren, G Sundqvist, G. Sundqvist, 1998, Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics.

Intraradicular bacteria and fungi in root-filled, asymptomatic human teeth with therapy-resistant periapical lesions: a long-term light and electron microscopic follow-up study.

K. Kahnberg, P. Nair, P N Nair, 1990, Journal of endodontics.