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.