Specialist in Oral & Maxillofacial Surgery; Medication related osteonecrosis of the jaws (MRONJ); Oral medicine; Sjogrens' syndrome; HIV-infection/AIDS; Dental implantology, Oral premalignant lesions; 

Medication related osteonecrosis of the jaws (MRONJ); Extensive international projects on MRONJ epidemiology, clasification, surgical treatment, and prevention; Oral medicine; Sjogrens' syndrome; Dental implantology; oral lichen planus

Established the Copenhagen osteonecrosis research cohort (MRONJ-cohort). Research on MRONJ classification, surgical operative procedures, MRONJ epidemilology, MRONJ prevention, tooth extraction on patients on high dose antiresorpive treatment for cancer (breast, prostate, multiple myeloma); dental implants in patients with Sjogren's syndrome;    

Consultant for Amgen, member of advisory board; teaching for Amgen, Estella, Ipsen.