Abstract: A dental coupling member related comprises: a first elongated body including, in a first-orientation end region, a first coupling part to be coupled with a first attaching part of a first dental appliance and including, formed in a second-orientation end region, a screwing part; an outer tube including, in a second-orientation end region, a second coupling part to be coupled with a second attaching part of a second dental appliance, and being open at an end on a first-orientation end region side; a third elongated body including a screwed part formed in a first-orientation end region and is inserted into the outer tube in a second-orientation end region of the outer tube, the screwed part being for screwing with the screwing part; and a protrusion projecting from an inner peripheral surface of the outer tube and facing an end surface of the third elongated body on the second-orientation end region side.

Abstract: A dental coupling member related to a first aspect of the invention comprises: a rod having, at one end region, a first coupling part that is coupled to a first attachment part of a first dental tool, and having a screw part at the other end region; and a cylindrical body having, in an inner circumferential surface of one end region, a screwed part into which the screw part is screwed, and having, at the other end region, a second coupling part that is coupled to a second attachment part of a second dental tool. This dental coupling member comprises a different-torque part at the screw part and/or the screwed part, the different-torque part having a different torque for screwing against the other of the screw part and the screwed part. This dental coupling member suppresses the occurrence of loosening between the screw part and the screwed part.

Abstract: A dental coupling member which can easily adjust the position of the lower jaw of the user without increasing the size of the coupling member is provided. The dental coupling member is attached to upper and lower oral appliances to couple them, and regulates displacement of the lower oral appliance to rear side. The dental coupling member has; an outer which is a cylindrical member having a through hole, to be attached to one oral appliance; an inner having a rod-shaped insertion portion to be inserted into an interior of the cylindrical portion and slidably held by the outer, the inner to be attached to the other oral appliance; and a stopper adjustably positioned inside the cylindrical portion, the stopper serve to limit a slide width of the insertion portion inside the cylindrical portion by adjustment of its position along the axial direction of the cylindrical portion.

Abstract: A mouthpiece with which the advancement amount of a lower jaw mouthpiece can be more easily adjusted, without increasing the size of the mouthpiece, is provided. The mouthpiece has: a pair of upper jaw and lower jaw mouthpieces facing each other; a male screw; a female screw; a front holding part provided to one of the mouthpieces, holding the male screw or the female screw; and a rear holding part provided to the other mouthpiece, holding the female screw or the male screw further rearward than the front holding part. The female screw and the male screw position the lower jaw mouthpiece in the front-rear direction with respect to the upper jaw mouthpiece, as a result of the turning of the male screw which is screwed into the female screw at a denture tooth surface or further rearward than the denture tooth surface.

Abstract: A dental coupling member related to a first aspect of the invention comprises: a rod having, at one end region, a first coupling part that is coupled to a first attachment part of a first dental tool, and having a screw part at the other end region; and a cylindrical body having, in an inner circumferential surface of one end region, a screwed part into which the screw part is screwed, and having, at the other end region, a second coupling part that is coupled to a second attachment part of a second dental tool. This dental coupling member comprises a different-torque part at the screw part and/or the screwed part, the different-torque part having a different torque for screwing against the other of the screw part and the screwed part. This dental coupling member suppresses the occurrence of loosening between the screw part and the screwed part.