PROBLEM TO BE SOLVED: To provide a tooth that instantaneously provides cutting feeling similar to that of natural teeth and easy experience of formation through abutment teeth formation and cavity preparation and that helps a student to fast acquire the formation techniques.SOLUTION: The tooth for a gnathic teeth model for treatment training is disclosed which comprises an enamel portion and a dentin portion of the tooth and an artificial caries portion between the enamel portion and the dentin portion or their rims. The artificial caries portion is made of a resin or an inorganic baked body and contains at least one of a coloring material, a fluorescent material and an X-ray imaging material.COPYRIGHT: (C)2008,JPO&INPIT【課題】支台歯形成、窩洞形成をすることによって、一早く天然歯牙と同様な切削感を体験でき、形成体験が容易に行え、また、これらの形成技術を早く取得することができる歯牙を提供する。【解決手段】治療練習用の顎歯模型用の歯牙であって、歯牙のエナメル部分と、デンチン部分と、エナメル部分とデンチン部分の間もしくはその辺縁に擬似齲蝕部分から構成され、擬似齲蝕部分が樹脂または無機焼成体から作製され、擬似齲蝕部分に着色材料、蛍光材料、X線造影材料の何れか一つ以上を含むことを特徴とする。【選択図】なし