Dental triage does not rank problems by how much they hurt. It ranks them by what could happen in the next few hours if nothing is done.
Spread of infection sits at the top
Infection originating at a tooth root can extend into the surrounding tissue spaces, and those spaces connect to regions of the head and neck.
Swelling that crosses into the floor of the mouth, the neck or around the eye is treated as an emergency because of where it can travel next.
Difficulty swallowing, difficulty breathing, an inability to open the mouth fully or a fever alongside swelling are the signs that push a case to the front of any queue.
Pain is a poor guide to danger
An inflamed pulp can produce severe pain while remaining confined to a single tooth with no risk of spread.
Conversely, an infection that has drained through the gum may hurt very little while continuing to progress within the bone.
Triage systems therefore ask about swelling, fever and function rather than about pain score alone, though pain still determines how quickly comfort is addressed.
Bleeding and trauma follow their own logic
Bleeding that does not stop under sustained pressure requires attention regardless of its source, and more so for anyone taking medication affecting clotting.
Trauma is assessed for injuries beyond the teeth, including the jaw, the facial bones and the possibility of head injury, which changes the destination entirely.
An avulsed permanent tooth is urgent on a timescale of minutes, which places it above problems that are more painful but more stable.
Some problems are urgent but not emergencies
A lost filling, a fractured cusp without pain or a loose crown are uncomfortable and inconvenient, but the tissue underneath is not deteriorating rapidly.
These are usually seen soon rather than immediately, with interim measures suggested to protect the tooth in the meantime.
Distinguishing them from something progressing is exactly what a triage call is for, and describing symptoms accurately shortens that conversation considerably.
Where to go depends on the finding
Dental practices handle problems originating at the teeth and gums, including drainage, extraction and pulp treatment.
Emergency departments handle airway compromise, uncontrolled bleeding, suspected fractures and head injury, though they may not have dental treatment available on site.
Anyone unsure which applies should describe the symptoms to a clinician rather than deciding alone, because the distinguishing features are not always obvious from the outside.