PROBLEM TO BE SOLVED: To provide a tooth fixing appliance having mechanical strength sufficient to resist the occlusal force of remaining teeth lowered in occlusal force, developing the original occlusal force of a tooth by simple operation only mounting the tooth fixing appliance to the neck of the tooth, fixing the remaining teeth while keeping physiological deflection, preventing the exposure of the root of the tooth or freely planning the tooth fixing appliance corresponding to symptoms, reducing the load of a patient caused by treatment or the like and reducing uncomfortable feeling without damaging aesthetic properties.SOLUTION: The tooth fixing appliance includes (a) an elastic floor 2 having a buccal floor part 2a arranged on the lingual or buccal side of the neck of the tooth and a lingual floor part 2b arranged on the lingual or palatine side of the neck of the tooth, (b) a remaining tooth inserting hole 3 formed between the buccal floor part 2a and lingual floor part 2b of the elastic floor 2, and (c) a series of linear reinforcing materials 5 having two traversing parts 5c and 4 traversing a row of teeth and embedding parts 5b and 5d embedded in the buccal floor part 2a and the lingual floor part 2b and surrounding the remaining teeth inserted in the remaining tooth inserting hole 3.COPYRIGHT: (C)2010,JPO&INPIT【課題】咬合力の低下した残存歯の咬合力を受け止められる十分な機械的強度を有し、歯頸に被着するだけの簡単な操作で歯が本来もっている咬合力を発揮でき、また生理的な動揺は維持したまま残存歯を固定することができ、また歯根の露出を防いだり症状に応じて自在に設計したりすることができるとともに、処置等による患者の負担を軽減でき、さらに審美性を損ねることがなく違和感の少ない歯牙固定具を提供する。【解決手段】(a)歯頸の唇側又は頬側に配される頬側床部2aと、舌側又は口蓋側に配される舌側床部2bと、を備えた弾性床2と、(b)弾性床2の頬側床部2aと舌側床部2bとの間に形成された残存歯挿入孔3と、(c)歯列を横断する2つの横断部5c、4と、頬側床部2a及び舌側床部2bに埋入された埋入部5b、5dと、を有し、残存歯挿入孔3に挿入された残存歯を囲繞する一連の線状補強材5と、を備える。【選択図】図1