An apparatus capable of outputting a user's tooth age with high accuracy is provided. A tooth condition determination apparatus according to an embodiment of the present invention includes a relationship acquisition unit that acquires a relationship between a state value representing a human tooth condition in a predetermined group and a human age, A state value acquisition unit 153 that acquires the state value of the user's teeth, and a calculation unit that calculates the user's tooth age corresponding to the state value acquired by the state value acquisition unit 153 based on the relationship acquired by the relationship acquisition unit 154 155 and an output unit 156 that outputs the tooth age calculated by the calculation unit 155. [Selection] Figure 2【課題】ユーザの歯年齢を高い精度で出力できる装置を提供する。【解決手段】本発明の一実施形態に係る歯状態判定装置１は、所定の集団における人間の歯の状態を表す状態値と人間の年齢との間の関係を取得する関係取得部１５４と、ユーザの歯の状態値を取得する状態値取得部１５３と、関係取得部１５４が取得した関係に基づいて、状態値取得部１５３が取得した状態値に対応するユーザの歯年齢を算出する算出部１５５と、算出部１５５が算出した歯年齢を出力する出力部１５６と、を有する。【選択図】図２
