The goal of this clinical trials to learn about potential additives in reducing dental plaque. The main questions it aims to answer is:

• is there a difference in the plaque reducing effect of oil pulling with sesame-based oil compared to rinsing with distilled water? Participants will rinse with 15 ml of their allocated liquid for 15 min every morning for 8 weeks.

Researchers will compare sesame-based oil against distilled water to see if there is a difference in the plaque reducing effect.

Inclusion Criteria:

age ≥ 18 years contractual capability the presence of ≥ 10 teeth, community periodontal index of treatment needs (CPITN) grade 1 or 2

Exclusion Criteria:

missing consent community periodontal index of treatment needs (CPITN) grade 0, 3 or 4 pregnancy or breastfeeding systemic diseases or conditions that are associated with an increased risk of infection or necessitate concomitant antibiotic therapy with dental treatment mental and behavioral disorders that impede (verbal) communication allergy against sesame(oil) intake of antibiotics 6 months prior to or during study duration intake of medication potentially influencing gingival inflammation or bleeding (e.g. anticoagulants, cortisone) infectious diseases (e.g. HIV, hepatitis B or C) fixed orthodontic appliances ongoing oil pulling or mouth rinsing adult guardianship insufficient nasal breathing