A An impacted tooth is one that fails to erupt into the dental arch because someinterference including dense overlying bone, excessive overlying soft tissue andadjacent teeth. Teeth most often become impacted because of inadequate dentalarch length and space to erupt, the total length of alveolar bone arch is smaller thanthe total length of the tooth arch. The lower third molars are the most frequentlyimpacted, because they are the last teeth to erupt, therefore they are the most likelyto have inadequate space for eruption. If impacted teeth are left in the alveolarprocess, it is highly probable that one or more of several problems will result. Toprevent this, the impacted lower third molars should be removed. The importantthings that must be concerned in removal of third molars impaction are indicationsand contraindications for removal impacted teeth, degree of impaction, surgicaltechnique for removal impacted teeth and complications that may occur in lowerthird molars removal. The lower third molars have a high incidence to becomeimpacted and often causes some problems for patient and operator.