Endodontic treatment of an invaginated maxillary lateral incisor with a periradicular lesion and a healthy pulp

Aim To report the healing of a periradicular lesion following nonsurgical root canal treatment of a dental invagination. Summary A case of dens invaginatus type 3 with a periradicular lesion and a healthy pulp is reported. Nonsurgical root canal treatment of the invagination was performed successfully and resolved an associated periradicular lesion. Despite the complex anatomy and a diagnosis of apical periodontitis, pulp health was retained after endodontic treatment of the invaginated canal. Clinical considerations and treatment are discussed and reported. Key learning points • Dens invaginatus can present in a variety of forms, knowledge of which can usefully inform endodontic diagnosis and treatment. • In certain cases, success can be achieved by treating the invagination alone. • Pulp health may be preserved during and after treatment of an infected invagination.