The gums inside the incisors are usually receding, which may be related to incorrect brushing, periodontitis, calculus, bite trauma and other factors. 1. Incorrect brushing: The bristles of the brush are too hard or the teeth are brushed horizontally, which may lead to gum irritation and gum recession. 2. Periodontitis: If you suffer from periodontal inflammation, it can lead to the destruction of periodontal tissues, and the gums attached to the alveolar bone may shrink along with the direction of the tooth root, so it looks like the gums inside the incisors are gone. 3. Calculus: Because there is calculus inside the incisors, the long-term accumulation of calculus can easily stimulate the gums, resulting in bleeding gums, gum recession and so on. 4. Occlusal trauma: due to occlusal imbalance caused by occlusal trauma, resulting in teeth stimulated by abnormal occlusal force, the alveolar bone resorption on the side of the force, thus causing gum recession. If the gum recession is more obvious, you should go to the hospital in time, under the guidance of the doctor’s clear examination and treatment.