Abstract: An oral suction device includes a vacuum hose connected to a suction source, a vacuum tip having a tube body that has a proximal end connectable to a distal end of the vacuum hose and a distal end as a suction port, and a bag-shaped light source holder provided on a tube-body outer surface, on a tube-body inner surface, or in a tube wall of the vacuum tip or at locations corresponding to a combination thereof, extending along a longitudinal direction of the vacuum tip, and having an opening at one end.

Abstract: To allow a vacuum tip and a vacuum hose to be attached to and detached from each other in a physical manner in a case of installing a light source on the vacuum tip side, it is configured that electrical connection between the vacuum tip and the vacuum hose is established in association with the attachment and detachment. An oral suction device including a vacuum hose connected to a suction source and a vacuum tip having a tube body that has a proximal end connectable to a distal end of the vacuum hose and a distal end as a suction port, includes a light source provided in the vacuum tip to illuminate inside of an oral cavity, a hose-side electrode, provided at the distal end of the vacuum hose, for supplying power from a power supply to the light source, and a tip-side electrode, provided at the proximal end of the vacuum tip and electrically connected to the light source, for receiving the power from the hose-side electrode.

Abstract: An oral cavity suction device comprising a vacuum hose and a vacuum tip including a tube body having a base end and a distal end that is a suction opening. The oral cavity suction device includes a hose-side light-outputting end face in the vacuum hose arranged to face the distal end side of the vacuum hose to output light input from a light source. The oral cavity suction device includes a light guiding element in the vacuum tip, with a tip-side light-receiving end face arranged to face the base end side of the vacuum tip to guide light input from the tip-side light-receiving end face and project the light. The hose-side light-outputting end face and the tip-side light-receiving end face allow light to be transmitted in a state in which the vacuum tip is completely connected to the vacuum hose.

Abstract: An artificial tooth constructed from upper and lower portions which are spatially adjustable with regard to each other in order to allow for a proper fit in a patient's mouth due to the incorporation of a plastic buffering layer between the two portions of the tooth that becomes malleable when exposed to high temperatures outside a patient's mouth, but hardens at the temperature within a patient's mouth.

Abstract: An artificial tooth or teeth and occlusion-controlling system(s) thereof, wherein information about the situation of occlusion in the mouth of a patient is transmitted to a computer (151) from a biting-pressure sensing element(s) (155) or film(s) incorporated in the present invention, and said computer (151) dictates control-signals to make a driving motor (152) or motors drive and adjust an occlusal surface of said patient in place so as to give a desirable, appropriate functional occlusion to said patient's comfort instantly.

Abstract: A stable dental prosthesis or artificial tooth which makes occlusal adjustment easier and which includes a stress breaking layer made of a flexible buffering material and provided between an occlusal surface portion and a connecting portion of the artificial tooth. The stress breaking layer made of the flexible buffering material can adjust the biting force in response to any varying occlusal pressure, allowing flexibly adjustment of position movement of the occlusal surface portion, and also allowing its vertical, horizontal and oblique movements, while the person wearing the artificial tooth is resting. The artificial tooth also allows easy adjustment of the cusp angle of the occlusal surface portion.