Wisdom tooth is a tooth that is in many ways different from other teeth in the jaw, it is the last tooth that erupts and therefore it has the least amount of space for proper eruption and it is the main reason why impaction has a frequency of 33%. Besides the lack of available space causes of impaction are numerous. In literature, but also in everyday clinical practise there is a big number of complications associated with impacted teeth. Pericoronitis is a condition that is most often and even in 90% of cases associated with impaction of lower third molars. Based on a thorough medical history, a suitable extraoral and intraoral examination and the analysis of radiological images clinician brings an individual treatment plan. Radiograph is an important step in the plan of therapybecause it shows the position, shape and number of the roots of what is imporant to select the surgical approach. It is important to keep the above mentioned indications and contraindications for extraction of wisdom teeth. Alveolotomy is the most common oral – surgery that removes part of the dental alveolar bone which shelters impacted tooth after that follows the extraction of teeth that are fully formed in the bone, but has not erupted in their place, nor in any other place in the dental arch or outside.