K. Sämfors

Prospective study of periapically infected teeth treated with periapical surgery including ultrasonic preparation and retrograde intermediate restorative material root-end fillings.

S. Isaksson, J. Blomqvist, P. Abrahamsson, 2007, Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons.

Periapical surgery using ultrasonic preparation and thermoplasticized gutta-percha with AH Plus sealer or IRM as retrograde root-end fillings in 160 consecutive teeth: a prospective randomized clinical study.

S. Isaksson, P. Abrahamsson, Dan-Åke Wälivaara, 2009, Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics.

Angular measurements in orthopantomography.

U. Welander, O. Malmgren, A. Frykholm, 1977, Dento maxillo facial radiology.

Area Distortion in Narrow Beam Rotation Radiography

U Welander, K A Sämfors, U. Welander, 1974, Acta radiologica: diagnosis.

Angle Distortion in Narrow Beam Rotation Radiography

U. Welander, K. Sämfors, 1974, Acta radiologica: diagnosis.