PROBLEM TO BE SOLVED: To provide a fixing tool capable of fixing a denture while preventing damage to the denture, and to provide an articulator including the fixing tool and capable of accurately, efficiently and objectively adjusting occlusion.SOLUTION: A fixing tool (first fixing tool) for fixing a plate denture to an articulator includes: a body 21 having a recessed part in which a base 110 for a plate denture 100 of a lower jaw is placed and a fixing means 22 for fixing the plate denture 100 for the lower jaw disposed in the recessed part to the body 21. The fixing means 22 has a body-side fixing section 221 formed on the body 21, and a band 223 for coupling the body-side fixing section 221 to the plate denture 100 for the lower jaw.COPYRIGHT: (C)2013,JPO&INPIT【課題】義歯の破損を防止しつつ当該義歯を固定することのできる固定具、および、この固定具を有し、正確かつ効率的さらには客観的に噛み合せの調節を行うことのできる咬合器を提供する。【解決手段】固定具(第1の固定具)は、咬合器に有床義歯を固定するための固定具であって、下顎側有床義歯100の床部110を配置する凹部を有する本体21と、凹部に配置された下顎側有床義歯100を本体21に固定する固定手段22とを有する。固定手段22は、本体21に設けられた本体側固定部221と、本体側固定部221と下顎側有床義歯100とを連結するバンド223とを有する。【選択図】図6