Abstract: A tongue cleaning device has not been available which ensures easy and satisfactory tongue cleaning for prevention of halitosis. To solve the problem, a tongue cleaning device is provided which is adapted to suck a tongue surface through a cylindrical member 11 by a suction system while scraping the tongue surface with spatulate members 14 and brushes 15. Papillae on the tongue surface are successively raised or laid down by scraping the tongue surface with the spatulate members 14 and brushes 15. Therefore, fossae of the tongue papillae and fissurae and sulci between the tongue papillae are spread so that bacterial plaque and bacteria can be sucked out of the sulci and the like by the suction system. Thus, the tongue can easily be cleaned.

Abstract: An occluded state and an opened state are reproduced on an occluding apparatus by a pair of upper and lower dentiform models using a bite at the time of occlusion and a bite at the time of opening which are extracted from a patient. For the reproduction, a D plate (Dual Mounting Plate) 9 is used. When the D plate 9 is used, it is possible to produce a C block which is integrated with an upper jaw teeth mode 4 by gypsum and an S1 block (or an S2 block) for a spacer which is mounted between the C block and an upper mounting plate 11 (12). The occluded state and the opened state can be reproduced using the dentiform models by replacing the S1 block and the S2 block with each other.