Microscopic removal of type III dens invaginatus and preparation of apical barrier with mineral trioxide aggregate in a maxillary lateral incisor: A case report and review of literature

Figure 3 Non-surgical treatment process. A: Invaginated tooth seen under the dental operation microscope; B: Partially invaginated tooth taken out for the first step; C: Intraoperative film confirmed that the invaginated tooth was completely removed; D: In vitro photo of a complete invaginated tooth; E: The canal was prepared with ultrasonic tip; F: The canal was irrigated with 1% sodium hypochlorite and saline; G: The canal was dried with absorbent paper points; H: Working length was confirmed with the X-ray dental pictures; I: Mineral trioxide aggregate was seen under the dental operation microscope; J: A radiographic image showed the apical third root was obturated with 4 mm mineral trioxide aggregate; K: The remaining pulp space was obturated with thermoplastic gutta-percha, and the access cavity was sealed with a composite resin; L: Radiograph taken immediately after the treatment.