Dental Nation
Question and answer

Swollen molar

A swollen molar can result from a dental abscess, gum infection, trapped food, or trauma and needs timely assessment if pain or fever occurs.

The short answer

A swollen molar often reflects inflammation from decay-related infection, a gum infection, trapped food, or trauma, and swelling with fever or spreading facial pain needs urgent dental care. The swelling may be in the gum beside the tooth or in the cheek overlying the jaw.

Dental educational image for this page

What is the direct answer?

What does this question mean?

The molar is a back tooth with multiple roots, so infection can collect around its pulp, root tip, or supporting gum tissues. A dentist distinguishes these causes by examining the tooth, testing pulp response, checking the gums, and taking dental radiographs when needed.

What can you do next?

Rinse gently with warm water, keep brushing around the area, and use pain medicine only as directed on its label or by a clinician. Do not place aspirin on the gum, pierce the swelling, or rely on antibiotics without treating the infected tooth or gum source.

When should you seek dental care?

Book prompt dental care for persistent swelling, toothache, pain on biting, a bad taste, or a gum boil. Seek emergency help when swelling affects the eye or neck, breathing or swallowing is difficult, or fever and marked illness accompany the dental swelling.

What should you ask the dentist?

Ask whether the infection is in the pulp, root tip, gum, or surrounding bone and whether an X-ray is needed. Ask whether drainage, root canal treatment, extraction, or gum treatment addresses the source, and what warning signs require same-day care.

Frequently asked questions

Can a swollen molar heal on its own?

Swelling from a dental infection usually needs treatment of its source, even if it drains and pain temporarily decreases.

Should I put heat on the cheek?

Avoid applying intense heat directly to the swelling and arrange dental assessment, because heat does not remove the infected source.