For an emergency cavity, Silver Diamine Fluoride (SDF) can be a highly effective initial treatment, particularly when a quick, non-invasive solution is needed to halt decay and relieve sensitivity. It is often preferred for immediate relief and to stabilise the tooth, especially for anxious patients or young children, without requiring drilling or anaesthesia. However, SDF is generally a temporary measure, whereas a traditional filling provides a long-term restoration of the tooth’s structure.

Key differences for emergency situations include:

• Invasiveness: SDF is non-invasive, applied topically without drilling or needles. Fillings typically require drilling to remove decayed tissue.
• Speed & Comfort: SDF application is quick and painless, often completed in minutes. Fillings can be more time-consuming and may require local anaesthesia.
• Function: SDF stops decay and reduces sensitivity but does not restore missing tooth structure. Fillings remove decay and rebuild the tooth, restoring its function and appearance.
• Permanence: SDF is often a temporary solution, especially for permanent teeth, and may require reapplication or subsequent definitive treatment. Fillings are designed to be a durable, long-lasting repair.