Dental cancer would be gum cancer, and early signs include gum sores and lumps, loose teeth and pain. 1. Gingival cancer is mostly squamous cell carcinoma. Gingival cancer mostly originates from interdental papillae and gingival margin area and manifests as ulcerative or exophytic type. Therefore, early signs include ulcerated, papillary and nodular masses on the gums. 2. Gingival cancer infiltrates into periosteum and bone of alveolar eminence at early stage, causing tooth loosening and pain due to bone destruction. If the lesion continues to develop, it will invade into the labiocheek sulcus, floor of mouth, palatal mucosa, maxillary sinus and mandible. If the gums appear ulcers, lumps, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.