A periodontal pocket depth measuring device is a low-cost secondary product made of paper fiber. It has a grip device and a probe device that extends on one side of the grip device. The probe device consists of an extension device and an insertion device. It is composed of a piece and a connecting piece. The extending piece is connected to the gripping piece, and a retracted space is formed between the extending piece and the insert piece. The connecting piece is a fiber with deformability and is located on one side of the retractable space. An observation space is formed on the other side of the connector. When the insert is inserted into the periodontal pocket, observe the extension piece and the opposite end of the insert touches from the observation space to judge that the insert has penetrated into the bottom of the periodontal pocket, to avoid the excessive force of the probe device to cause serious gingival bottom Pain, and replace it with a new one after each use to prevent contamination of the oral cavity.一種牙周袋深度測量裝置，係由紙纖維所製成具成本低之ㄧ次性商品，具有握持件與握持件一側延伸之探針裝置，該探針裝置係由延伸件、插入件以及連接件所構成，延伸件連接於握持件，且延伸件與插入件之間間隔形成有內縮空間，連接件係纖維具有變形能力且位於內縮空間一側，且內縮空間於連接件之另側形成有觀測空間。當插入件插入牙周袋，藉由觀測空間觀測出延伸件、插入件相對端部碰觸在ㄧ起而判斷插入件已深入牙周袋底部，避免探針裝置施力過當使牙齦底部發生嚴重的疼痛，且每次使用後更換新的，以防止污染口腔。
