Objective: The research aim was to examine the frequency and reason for wisdom tooth extraction in the Private Specialist Practice of Dental Medicine for Oral Surgery Stjepan Siber in Osijek. Study plan: Cross-sectional research in the Private Specialist Practice of Dental Medicine for Oral Surgery Stjepan Siber in Osijek. Participants and Methodology: The research included 51 participants from the Private Specialist Practice of Dental Medicine for Oral Surgery Stjepan Siber, who all willingly participated. The data collection method was a survey questionnaire created for this research. The first part of the questionnaire covers the demographic data of the participants. The second part of the questionnaire includes the anamnestic data of the examinee and the data obtained from the intraoral examination. The last part of the questionnaire comprises information about the reason for wisdom tooth extraction, the operative procedure, and the postoperative recovery. Results: The results show that the main reason for wisdom tooth extraction is dental crown caries in 39 % of participants, while 20 % of cases are pericoronitis. During the extraction, an alveotomy procedure was necessary in 53 % of cases, and the need for suturing in 64 % of cases, because 53 % of the participants had partially impacted third molars. As a result, 55 % of participants had complications in pain and swelling. Conclusion: Extraction of third molars is one of the most common procedures in oral surgery. The practice in which our research took place handles various surgical procedures, and 25.5 % of all procedures are wisdom tooth extractions. From our research, it can be concluded that caries is the main reason for extraction in both men and women, followed by pericoronitis, and the prevalence of extraction due to caries is higher in people over 40 years old.