Abstract: An electronic device includes a metal back cover, a metal frame, and a first, second, third, and fourth radiators. The metal frame includes a discrete part and two connection parts. The connection parts are located by two sides of the discrete part, separated from the discrete part, and connected to the metal back cover. A U-shaped slot is formed between the discrete part and the metal back cover and between the discrete part and the connection parts. The first radiator is separated from the discrete part and includes a feed end. The second, third, and fourth radiators are connected to the discrete part and the metal back cover. The third radiator is located between the first and second radiators. The first radiator is located between the third and fourth radiators. The discrete part and the first, second, third, and fourth radiators form an antenna module together.

Abstract: An electronic device includes a metal back cover, a metal frame, a first antenna module and a second antenna module. The metal frame includes a first and a second disconnection portion, a first and a second connection portion. The first and the second connection portion are connected to the metal back cover. The first disconnection portion is separated from the first connection portion, the metal back cover and the second disconnection portion to form a first slot. The second disconnection portion is connected to the second connection portion and is separated from the metal back cover to form a second slot. The first antenna module is connected to the first disconnection portion, and forms a first antenna path. The second antenna module is connected to the second disconnection portion, and forms a second and a third antenna path with the second disconnection portion and the metal back cover.

Abstract: A dental implant is provided, wherein the dental implant includes a dental root implant. The dental root implant forms a columnar body, and two ends thereof have a tubular portion and a joint portion, respectively, wherein the tubular portion is provided with a plurality of through holes. A central groove is formed inside the tubular portion and communicates with the through holes, wherein an inner diameter of the central groove tapers from approaching the joint portion to away from the joint portion. The joint portion can be coupled to a dental crown, and the tubular portion can be coupled to a human alveolar bone. The through holes can facilitate an osseointegration of the dental root implant in the alveolar bone.

Abstract: A combined assembly for dental prosthesis is provided, wherein the combined assembly includes a first joint member and a second joint member. The first joint member has a first body and a plurality of elastic hooks, and the elastic hooks are annularly arranged to connect one end of the first body, wherein a slot is disposed between the adjacent elastic hooks, and each of the hook has a top portion protruding outward. The second joint member has a second body, and the second body is provided with a joint hole, a side wall surface of which is provided with a ring groove, wherein the elastic hooks extend into the joint holes, and the top portions of the elastic hooks engage into the ring groove.

Abstract: A combined assembly for dental prosthesis is provided, wherein the combined assembly includes a first joint member and a second joint member. The first joint member has a first body and a plurality of elastic hooks, and the elastic hooks are annularly arranged to connect one end of the first body, wherein a slot is disposed between the adjacent elastic hooks, and each of the hook has a top portion protruding outward. The second joint member has a second body, and the second body is provided with a joint hole, a side wall surface of which is provided with a ring groove, wherein the elastic hooks extend into the joint holes, and the top portions of the elastic hooks engage into the ring groove.

Abstract: A dental implant is provided, wherein the dental implant includes a dental root implant. The dental root implant forms a columnar body, and two ends thereof have a tubular portion and a joint portion, respectively, wherein the tubular portion is provided with a plurality of through holes. A central groove is formed inside the tubular portion and communicates with the through holes, wherein an inner diameter of the central groove tapers from approaching the joint portion to away from the joint portion. The joint portion can be coupled to a dental crown, and the tubular portion can be coupled to a human alveolar bone. The through holes can facilitate an osseointegration of the dental root implant in the alveolar bone.

Abstract: The disclosure provides an artificial denture which is configured to fixed to a carrier. The artificial denture includes a first inner component, a second inner component and a tooth crown. The first inner component is configured to be fixed to the carrier. The first inner component includes a first cover and a first post connected to each other. The first post has a hole. The second inner component includes a second cover and a second post connected to each other. The second cover is detachably sleeved on the first cover, and the second post is inserted in the hole of the first post so as to be fixed to the first inner component. The tooth crown covers the second cover of the second inner component.

Abstract: A method is designed to mount a removable restoration tooth on a natural tooth to be restored. The method involves the use of the standardized plastic inner crowns corresponding to the permanent teeth of a human, the standardized metal outer crowns corresponding to the plastic inner crowns, and the standardized abutment conformation devices corresponding to the plastic inner crowns. One of the devices is used as a reference in forming an abutment on the natural tooth. An abutment matrix is made to facilitate the dressing of the plastic inner crown, so as to make a metal inner crown according to the dressed plastic inner crown. The metal inner crown is mounted on the abutment. A metal outer crown corresponding to the plastic inner crown is fitted with the restoration tooth, which is mounted on the natural tooth such that the metal outer crown is fitted over the metal inner crown.

Abstract: A dental abutment is provided with an axial through hole and is fastened at a lower segment thereof with an implant in conjunction with a cement which is infected into a threaded hole of the implant. An excess amount of the cement is forced out via the axial through hole of the abutment such that the cement is deposited on a flat top of the abutment to facilitate the removing of the cement residue and to minimize the likelihood of a gums inflammation which may be resulted from an incomplete removal of the cement residue.

Abstract: A method is designed to mount a removable restoration tooth on a natural tooth to be restored. The method involves the use of the standardized plastic inner crowns corresponding to the permanent teeth of a human, the standardized metal outer crowns corresponding to the plastic inner crowns, and the standardized abutment conformation devices corresponding to the plastic inner crowns. One of the devices is used as a reference in forming an abutment on the natural tooth. An abutment matrix is made to facilitate the dressing of the plastic inner crown, so as to make a metal inner crown according to the dressed plastic inner crown. The metal inner crown is mounted on the abutment. A metal outer crown corresponding to the plastic inner crown is fitted with the restoration tooth, which is mounted on the natural tooth such that the metal outer crown is fitted over the metal inner crown.

Abstract: An artificial implantable dental structure comprises an abutment, an implant, and a normal conical body located between the abutment and the implant. The normal conical body serves to minimize an acute angle that is formed by a conical surface of the normal conical body and a top of the gums at the time when the implant is planted in a bone socket of the mouth cavity, thereby preventing deposition of food particles in contact areas of the implant and the gums.

Abstract: A detachable restoration tooth has a bottom, an outer surface, and a top. The bottom is provided with a cavity to accommodate an outer crown. The restoration tooth further has two connection portions, each extending from a boundary edge of the top and the outer surface. The restoration tooth is removably mounted on the abutment seat of a restored tooth such that the outer crown is fitted over an inner crown of the abutment seat, and that the connection portions are attached to two healthy teeth adjoining the restored tooth.

Abstract: A method is designed to mount an inner crown of a restoration tooth on a natural or artificial abutment. The method involves a first step in which the inner crown is provided in a hollow interior with a cement coating before the inner crown is fitted over the natural or artificial abutment. The natural or artificial abutment is then provided with a retaining hole which is drilled into an interior of the natural or artificial abutment from one upright wall of the inner crown. The retaining hole is used to retain a retention pin or securing the inner crown to the natural or artificial abutment. The inner crown is thus prevented from becoming disengaged with the natural or artificial abutment by the cement coating and the retention pin.

Abstract: A dental abutment is provided with an axial through hole and is fastened at a lower segment thereof with an implant in conjunction with a cement which is infected into a threaded hole of the implant. An excess amount of the cement is forced out via the axial through hole of the abutment such that the cement is deposited on a flat top of the abutment to facilitate the removing of the cement residue and to minimize the likelihood of a gums inflammation which may be resulted from an incomplete removal of the cement residue.