A successful outcome of endodontic treatment depends to a large extent on accurate intraoperative findings. Conventionally, micromirrors and microprobes have been used for this purpose. The dental operating microscope (DOM) has been implemented to enhance visibility during dental procedures. However, the microscope, a sizable tool, remains between operating field and the dental practitioner, making his ability to manipulate more complicated. Also, the interference of the hands and the handpiece with the visualization of the surgical field and inaccurate observation of the endodontic instruments during the procedure. Endoscopy reportedly provides the dentist with excellent vision and ease of use. It also provides a better intraoperative visualization in comparison with micromirrors. Further development of endoscopy made it possible to combine magnification, light, irrigation/suction and surgical microinstruments in one device. This combination could lead to an advanced root canal treatment technique.