In an oral cavity, the shapes of hard tissue in the teeth tend to change due to contact with each other and mastication dental abrasion and gaps between teeth often occur, which makes cleaning difficult and accumulation of food residues in the gaps between teeth due to food/drink intake serves as an energy source for bacteria living in the mouth, thus causing cavities and periodontal diseases. In the case in which a tooth is lost from the jaw, because the tooth on the opposite side is not used on a daily basis, tooth extrusion occurs, the adjacent tooth is moved toward the lost-tooth side, and thus, the masticatory efficiency and periodontal tissue are also adversely affected. The purpose of the present invention is to effectively reduce the occurrence of cavities, staining, or the like, thus protecting teeth alternatively, the purposes of the present invention include, for example: prevention of improper tooth movement prevention of food impaction maintenance of dentition and occlusion and protection of interdental papilla. Teeth are protected by wearing, on a jaw, a meal mouthpiece that comes into close contact with teeth and gums, that is formed of a soft material and a hard material, and in which the outer sides of the occlusion surfaces of molars are formed of the hard material.口腔中,牙齒會由於硬組織之間接觸、咀嚼的緣故,形狀特別容易變化,牙齒磨耗,牙齒的間隙多,難於清掃,由於飲食,正常的牙齒間會附著食物殘渣,而成為口腔中細菌生長的能源,引起蛀牙或牙周病。於顎失去牙齒的情況,由於相對側的牙齒未日常使用的緣故,會引起牙齒凸出,鄰近牙齒會發生朝已失去牙齒側移動,而對咀嚼效率或牙周組織帶來不良影響。本發明的目的在於有效地減少蛀牙、著色等,保護牙齒。將密接於牙齒與牙齦,以軟質材料與硬質材料製作,臼齒部的咬合面的外側以硬質材料製作的飲食用牙套予以裝設於顎而保護牙齒。m7‧‧‧飲食用牙套的邊緣
