In the everyday clinical practice the incidence of minor complications is approximately 15-20% of the total number of third molar removals. Alveolitis (dry socket syndrome) may arise in 30-40% of the surgical tooth removals. Several preventive approaches are known, such as the use of iodoform gauze, zink-oxide eugenol paste, platelet rich fibrin (PRF), different medicine containing pastes, like antibiotics containing, non-steroid pain killer containing, steroid containing, or the application of chlorhexidine gel and solutions. In the case of a manifest alveolitis these methods can be used as well. The aims of this research are: i) to identify the important pathogens which play role in the development of alveolitis (microbiological methods), ii) to analyze the in vitro effectivity of the different antiseptic materials in case of infections (inhibitory zones) iii) to compare the effectivity of different alveolitis preventive methods in a prospective clinical study, iv) to compare the different treatment options in alveolitis in a prospective clinical study.

Inclusion Criteria:

• Pell-Gregory II/B impaction
• mesioangular impactions
• tooth sectioning is not necessary for removal
• without local infection of third molar

Exclusion Criteria:

• no general diseases or following treatments (DM, steroids, bleeding risk, chemotherapy, radiotherapy, bisphosphonates, immunosuppressive conditions)