O. Schei

Alveolar Bone Loss as Related to Oral Hygiene and Age

O. Schei, J. Waerhaug, A. Lovdal, 1959 .

Combined effect of subgingival scaling and controlled oral hygiene on the incidence of gingivitis.

O. Schei, J. Waerhaug, A. Lovdal, 1961, Acta odontologica Scandinavica.

Tooth Mobility and Alveolar Bone Resorption as a Function of Occlusal Stress and Oral Hygiene

O. Schei, A. Lovdal, A. Arno, 1959 .

Incidence of gingivitis as related to sex, occupation, tobacco consumption, toothbrushing, and age.

O. Schei, J. Waerhaug, A. Lovdal, 1958, Oral surgery, oral medicine, and oral pathology.

Alveolar Bone Loss as a Function of Tobacco Consumption

O. Schei, A. Lovdal, A. Arno, 1959 .

Digital rectal examination to screen for prostatic cancer.

T. Ludvigsen, O. Schei, G. Waaler, 1988, European urology.