How to Clean Retainers and Aligners Safely
Retainers and clear aligners touch your teeth and gums for hours every day. If they aren’t cleaned correctly, bacteria build up fast, leading to odour, staining, and irritated gums. The good news: a simple, safe routine keeps them fresh and clear.
What’s the safest way to clean retainers and aligners?
Rinse with cool water; brush gently with a soft toothbrush and clear, unscented soap; then air‑dry in a clean case. Avoid toothpaste, hot water, colored mouthwash, and bleach. Use non‑abrasive cleaning tablets weekly. Wear only on clean teeth afterward, daily.
Why your cleaning routine matters
Appliances like Essix retainers and clear aligners can trap food and plaque. That means more acid, more odour, and a higher chance of gum irritation. Keeping them clean protects your enamel and the health of your gums—and helps your trays stay invisible, too.
If you’re new to retainers, start with the basics on fit and wear, then add a daily cleaning routine. For an overview of types and wear timelines, see our guide to retainers and wear schedules.
Daily cleaning: 3 easy steps
1) Rinse right away
Each time you remove your appliance, rinse it with cool water. This washes away saliva and sugars before they dry into a sticky film.
2) Brush gently with the right cleanser
Use a soft toothbrush and a drop of clear, unscented liquid soap (like plain dish or hand soap). Brush inside and out for 30–60 seconds. Rinse well with cool water.
3) Air‑dry properly
Moisture invites odour. After rinsing, tap off excess water and let your retainer or aligner air‑dry for a few minutes before putting it back in—or store it in a clean, ventilated case if you’re eating.
What to avoid (to prevent damage)
- Toothpaste: most formulas are abrasive and can scratch clear plastic, making it cloudy and easier to stain.
- Hot water: heat can warp plastic and ruin the fit.
- Colored or alcohol-based mouthwash: can stain or degrade plastic over time.
- Bleach or harsh cleaners: too strong for oral appliances and tough on the soft tissues in your mouth.
Weekly deep-clean (non‑abrasive)
Once or twice a week, use a non‑abrasive cleaner that’s safe for dental appliances. Most Canadian pharmacies carry effervescent retainer-cleaning tablets—look for ones formulated for retainers/aligners (not just dentures). Follow the label exactly, then rinse thoroughly with cool water.
Special notes by appliance type
Clear retainers and aligners (Essix/thermoplastic)
- Stick to cool water and mild soap daily.
- Use non‑abrasive tablets weekly (avoid harsh powders).
- To prevent cloudiness, never use toothpaste or scrub with baking soda.
Hawley retainers (acrylic + metal wire)
- Brush gently around the wire to avoid bending it.
- Use cool water and mild soap; avoid hot water (acrylic can warp).
- Soak weekly in a non‑abrasive cleaner; rinse well.
Preventing stains and odour
- Wear on clean teeth only: brush and floss before putting them in.
- Limit dark drinks (coffee, tea, red wine) while wearing aligners; remove the tray first to avoid trapping stains.
- Rinse after every meal or snack—even if you don’t brush immediately.
- Let them dry briefly before storing to reduce odour.
If appliances start to smell, it’s often a sign of trapped bacteria on the tongue or between teeth. A consistent tongue-cleaning routine and fresh breath habits help. See our guide on how to prevent bad breath for simple steps that complement your appliance care.
Step-by-step: on-the-go cleaning
- Rinse your retainer/aligner with cool water.
- Use a travel-size soft brush and a drop of clear soap; brush gently.
- Rinse again; shake off excess water.
- Air‑dry for a minute before returning to your mouth or case.
Keep a small kit in your bag: vented case, soft brush, clear soap, and a couple of individually wrapped non‑abrasive cleaning wipes (designed for retainers/aligners).
Common mistakes (and easy fixes)
- Using toothpaste: switch to clear, unscented soap for daily cleaning.
- Soaking in hot water: always use cool water to protect the fit.
- Leaving in napkins: this is how many appliances get lost in restaurants; use a ventilated case.
- Wearing while eating: food particles get trapped; remove before meals.
- Skipping nighttime brushing: wearing appliances over plaque increases odour and stain risk.
Aligners, braces, and your cleaning routine
If you still have brackets and wires, cleaning takes a few extra minutes. Interdental brushes, floss threaders, and water flossers can help remove trapped food and plaque. You’ll find practical tips for reaching tricky spots in our guide to cleaning around brackets.
What about vinegar, peroxide, or baking soda?
These household items can be too harsh—or too abrasive—on clear plastic. Occasional diluted solutions may work in a pinch, but it’s easy to overdo it and damage your appliance surface. To play it safe, choose non‑abrasive cleaners made for retainers/aligners.
When to call your dentist or orthodontist
- Persistent odour even after careful cleaning.
- White, rough patches on the appliance (possible mineral deposits).
- Warping, poor fit, or cracked plastic.
- Irritation or sores on your cheeks/tongue that don’t improve.
Bring your case to your appointment—many clinics can professionally clean retainers during your visit and check the fit.
“Oral diseases affect nearly 3.5 billion people worldwide.” — World Health Organization
Clean appliances won’t fix every oral health issue, but they do lower bacterial load and support healthier gums and fresher breath—especially important when you’re wearing trays 20–22 hours per day.
Canada-specific tips
- Cold winters: Dry indoor air can thicken plaque and make aligners feel tacky. Drink water regularly and consider a cool-mist humidifier at night.
- Hockey and winter sports: Use a sport mouthguard during play; aligners should be removed and stored in a case while you’re on the ice.
- Travel: Most Canadian pharmacies and supermarkets carry non‑abrasive retainer cleaning tablets and vented cases—easy to find if you forget your kit.
Simple checklist (print or save)
- Cool water rinse after every removal.
- Gently brush daily with soft brush + clear, unscented soap.
- Air‑dry briefly before storing or reinserting.
- Weekly non‑abrasive tablet soak (follow label).
- Only wear on clean teeth.
- Use a ventilated case—never a napkin.
Conclusion
Clean retainers and aligners protect your teeth, gums, and treatment progress. Keep it simple: cool water, a soft brush, clear soap, and a weekly non‑abrasive soak. Avoid heat, toothpaste, and harsh chemicals. Build these habits now, and your appliance—and your smile—will stay clear, comfortable, and healthy.
FAQ
Can I use toothpaste to clean my retainer or aligner?
Skip toothpaste. It’s abrasive on clear plastic and can cause cloudiness and micro-scratches that hold stains and odour. Use a soft brush with clear, unscented soap instead.
How often should I deep-clean with tablets?
Once or twice weekly is plenty for most people. Follow the product directions, rinse thoroughly, and avoid soaking longer than recommended.
Is it okay to sleep with aligners that are still damp?
Yes, but a brief air‑dry (about a minute) helps reduce odour. The most important rule is to wear aligners over clean teeth.
What if my retainer smells even after cleaning?
Try a weekly non‑abrasive soak, add daily tongue cleaning, and ensure you’re wearing it over freshly brushed and flossed teeth. Persistent odour or a rough, chalky surface warrants a professional cleaning and fit check.
Can I drink coffee or tea with my aligners in?
Remove them first to prevent trapping stains and heat warping the plastic. Rinse your mouth and aligners with cool water before reinserting.
What’s the safest way to clean the case?
Wash your case daily with warm (not hot) soapy water, rinse, and let it air‑dry completely. Replace cracked or odorous cases.
