Provided is an upper part structure (3) which is coupled to a fixture (2) which is formed from pure titanium or a titanium alloy and implanted in a jawbone, said upper part structure (3) comprising a framework (5) formed from a cobalt-chrome alloy, an artificial tooth (4) which is bonded to an outer surface of the framework (5), and a coupling member (6) which is formed from a gold alloy, is bonded to a lower part of the inner side of the framework (5), and is coupled to the framework (2). The framework (5) and the coupling member (6) are brazed and integrally formed by a brazing material (10) formed from a gold alloy including gold and silver.
