Her main research areas are: Caries prevalence in small children according to their mother’s caries situation, oral microbiota and attitude towards dental treatment; The effect of dietary sugar alcohols on prevention of dental diseases; The optimising of the treatment and prophylaxis of periodontal diseases regarding to first treatment efficacy, the spectrum and antibiotic susceptibility pattern of the most important pathogens, the pharmacokinetic properties of antibiotics, and person-to person transmission; A study of genetic etiology of nonsyndromic cleft lip and palate in Estonia Population; Identification of genetic factors underlying JIA susceptibility in Estonian population; Chronic apical periodontis (CAP): pathogenic bacteria and their virulence factors; Oral health and temporomandibular disorders in Vietnamese elderly .