A system configured provided with a continuously captured image sequence forming means for continuously capturing side surfaces of rows of teeth to form an image sequence, a side surface tooth row image forming means for combining sequences of images which were formed by the continuously captured image sequence forming means as partial tooth row images from an image forming the center of the overall composite so as to form a plurality of partial tooth row images, and a side surface tooth row image combining means for linking and combining a plurality of partial tooth row images which were formed by the side surface tooth row image forming means based on images forming the centers of the overall composite so as to form overall rows of teeth. By configuring the system in this way, it is possible to use a handheld type intraoral video camera to form a panoramic image of the side surface tooth rows for display on a computer monitor and propose a broad range of dental diagnosis and treatment to a patient and to secure participation of the patient in proactive dental diagnosis and treatment.