R Removal of impacted lower third molar is often lead to post extraction complication, such as alveolar osteitis. Alveolar osteitis is inflammation of the socket developing within the first to fourth day after removal of impacted mandibular third molar with throbbing, intense pain, and halitosis. Etiology from alveolar osteitis is fibrinolysis. The predisposition factor of alveolar osteitis are, surgical trauma and difficulty of impacted lower third molar removal, smoking, excessive local anesthetic with vasoconstrictor, using oral contraceptives which contain estrogen, lack of operator experience, and bacteria. The aim of alveolar osteitis management is to reduce the pain during the healing period. The most common treatment which being used in alveolar osteitis management after impacted lower third molar removal are irrigation of the socket and medicament placement into the socket. Chlorhexidine is the most commonly used irrigant for a socket irrigation. Alvogil is suggested to be used as the medicament for intra-alveolar.