Yes, rotten tooth is one of the causative factor for oral cancer. Whenever a tooth is decayed, it remains demineralised and becomes brittle, it can easily fracture, the fractured tooth has sharp edges which could impinge on the adjacent tongue and cheek. This long standing sharp edges hitting the cheeks and tongue, can cause cancerous lesions.
Next Steps
Regular dental visits are mandatory to avoid such lesions, whenever sharp tooth is hitting on soft tissues, it has to be roundened to prevent further damage to tissues, it’s always recommended to get a biopsy done in case of such overgrowth in tissues.
Health Tips
Regular dental visits for every 6 months, and get your sharpened tooth reduced by enameloplasty, avoid smoking and tobacco consumption.