USE OF OPERATING MICROSCOPE AND CONE-BEAM COMPUTED TOMOGRAPHY FOR ROOT CANAL TREATMENT OF A MAXILLARY SECOND PREMOLAR WITH THREE ROOT CANALS IN A JAPANESE PATIENT

抄録

A second maxillary premolar with three root canals are extremely unusual to encounter such teeth in clinical practice. Here, we report a case in the right maxillary second premolar in which we carried out root canal treatment using a surgical microscope. Before treatment, CBCT was taken and the diagnosis was maxillary second premolar with three root canals. The patient received verbal and written explanations of the procedures in advance, and she consented to the procedures and for details of her case to be published. Rubber dam isolation was carried out before the start of the root canal treatment. On the first visit, microscopic observation revealed DB2 in addition to the three root canals. At the second visit, the canal was filled. A follow-up examination was conducted at 1 year after the end of prosthetic treatment. The patient’s condition was therefore considered to be cured. The use of a microscope in the present case to search for and treat the root canals allowed predictive treatment to be performed and a favorable result was obtained.