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How to apply emergency dental care techniques until you can see a dentist 
Rinse the mouth out with warm water to clean it out. 
Gently use dental floss or an inter dental cleaner to ensure that there is no food or other debris caught between the teeth. 
Never put aspirin or any other painkiller against the gums near the aching tooth, because it may burn the gum tissue.
If the pain persists, contact your dentist. Rinse your mouth with warm water to clean the area.