Dental work is the deferral nobody expects. The mouth is full of bacteria, and dental procedures push them briefly into your bloodstream — so centres wait until that window closes.
The timelines
| Procedure | Wait before donating |
|---|---|
| Routine cleaning/scaling | None |
| Small filling | None |
| Simple tooth extraction | At least 3 days, socket clean and healing |
| Wisdom tooth removal | About 1 week, fully comfortable |
| Root canal | Until treatment is complete and infection-free |
| Implant or gum surgery | About 1 month |
| Major oral/maxillofacial surgery | About 6 months |
The antibiotic overlap
If your dentist put you on a course of antibiotics for a dental infection, that adds its own deferral — most centres ask you to finish the course and be symptom-free for a short period before donating. Healing tooth + finished antibiotics + feeling well = you are back on the register.
Why the rule is about the patient, not you
Donated blood is precious, and centres are strict about anything that could carry bacteria into a unit. The dental wait feels excessive for a small extraction — but the rule is one line, applies to everyone, and expires quickly.
Then you are back
Intervals run independently of dental work. Once the wait clears, donate on your normal schedule — and if you are not yet on the register, become a donor while you heal.