Hemisection is the separation of the whole tooth from the mesial to distal in the upper molars and premolars and from the buccal tolingual in the lower molars, and removal of the pathological root together with the crown. Hemisection is an appropriate treatmentoption when caries, resorption, iatrogenic complication or periodontal damage is limited to one root and the other root is relativelyhealthy. Hemisection of the affected tooth helps to preserve alveolar bone which surrounding the tooth structure and supports fixeddentures. Therefore, when a molar tooth should be extracted only because of damage at one root, hemisection or root amputationtreatment alternatives should be kept in mind. This case series describes hemisection as a successful treatment method to recoverteeth with iatrogenic complications and irretrievable root caries were limited to single root.