The present invention relates to a tooth-protection device comprising an electrode. According to the present invention, the tooth-protection device includes: a body part including a power part and a tooth-insertion groove formed on one side of the body part while being dent in a shape corresponding to a set of teeth. On one of tooth-touching surface and a gum-touching surface of the tooth insertion groove, a positive electrode is formed, whereas a negative electrode is formed on the other side of the touching surface, thereby allowing current applied from the power part to flow through the positive electrode.COPYRIGHT KIPO 2016본 발명은 전극이 구비된 치아보호장치로서, 전원부가 내장된 몸체부 및 몸체부의 일측에 치열과 대응되는 형상으로 함몰형성된 치아 삽입홈을 포함하며, 치아 삽입홈의 치아 접촉면 및 잇몸 접촉면 중 일 접촉면에는 (+)전극이 형성되고, 타 접촉면에는 (-)전극이 형성되어, 전원부로부터 인가된 전류가 양 전극을 통해 흐르게 되는 것을 특징으로 한다.