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How to Clean Retainers & Aligners in Greensboro’s Hard Water

Making Smiles Inside & Out

Retainer iStoc image
  • Robert Stoner Orthodontics
  • April 21, 2025

If you live in Greensboro, you may have noticed that your retainer or Invisalign aligners start to develop a cloudy film or white buildup over time. That’s because Greensboro’s water supply has moderate to hard water, meaning it contains minerals like calcium and magnesium that can cling to your oral appliances.

At Robert Stoner Orthodontics, we want to make sure your retainer or aligners stay clean, fresh, and free from buildup so they can continue keeping your smile healthy and straight. Here’s everything you need to know about cleaning your retainers and aligners in Greensboro’s hard water.

Why Does Hard Water Affect Retainers and Aligners?

Hard water contains high levels of minerals, particularly calcium and magnesium. When these minerals come into contact with your retainer or clear aligners, they can leave behind white, chalky residue that’s tough to remove.

This buildup isn’t just unsightly—it can:

  • Trap bacteria, leading to bad breath and potential oral health issues
  • Make your retainer feel rough or uncomfortable in your mouth
  • Reduce the effectiveness of your aligners over time

To prevent these problems, it’s essential to clean your retainer or Invisalign trays properly—especially if you use Greensboro tap water!

What Not to Use on Your Retainer or Aligners

Before we get into the best cleaning methods, let’s go over what you shouldn’t use:

  • Toothpaste – It can scratch clear retainers and aligners, making them look cloudy.
  • Hot water – High temperatures can warp retainers and Invisalign trays.
  • Bleach or harsh chemicals – These can damage the plastic and cause irritation in your mouth.
  • Mouthwash with alcohol – It can dry out and weaken your retainer.
  • Dish soap with fragrances – Some soaps contain harsh ingredients that can linger on your appliance.

The Best Ways to Clean Retainers and Aligners in Greensboro

1. Rinse with Distilled Water Instead of Tap Water

Since Greensboro has hard water, rinsing your retainer or aligners with distilled water instead of tap water can help prevent mineral buildup.

Pro Tip: If you must use tap water, wipe your retainer dry immediately with a soft cloth to reduce mineral deposits.

2. Use a Gentle Retainer Cleaner

To remove plaque and hard water buildup, try these safe cleaning solutions:

  • White Vinegar Soak – Mix equal parts white vinegar and distilled water, soak for 15 minutes, then brush gently with a soft toothbrush.
  • Baking Soda Paste – Make a paste with baking soda and water, gently scrub, and rinse thoroughly.
  • Hydrogen Peroxide & Water – Soak in a 50/50 solution for 10–15 minutes to disinfect and whiten retainers.
  • Orthodontic Cleaning Tablets – Brands like Retainer Brite or Invisalign Cleaning Crystals help break down buildup.

Avoid using vinegar or baking soda too often, as they can make the plastic slightly rough over time.

3. Brush with a Soft Toothbrush (But No Toothpaste!)

Instead of using toothpaste, which can be too abrasive, gently brush your retainer or aligner with a soft toothbrush and mild soap to remove bacteria and prevent stains.

Best practice: Brush your retainer at least once a day and soak it 2–3 times per week for deeper cleaning.

4. Store It Properly to Avoid Buildup

When your retainer or aligners aren’t in your mouth, they should be stored properly to prevent exposure to hard water deposits.

  • Use a dry case – Don’t leave it soaking in water for too long.
  • Keep it away from direct sunlight – Heat can damage clear plastic.
  • Avoid wrapping it in napkins – This increases the risk of bacteria growth.

Signs It’s Time for a Deeper Clean

If you notice any of the following, your retainer or aligner needs extra cleaning:

  • Cloudy, white buildup that won’t rinse off (hard water deposits)
  • A lingering bad smell or taste
  • Yellowing or staining
  • A rough texture instead of smooth plastic

If buildup won’t go away with home cleaning methods, bring your retainer to Robert Stoner Orthodontics—we can professionally clean it for you!

When to Replace Your Retainer or Aligners

Even with proper care, retainers and aligners don’t last forever.

  • Invisalign trays are replaced every 1–2 weeks as part of treatment.
  • Hawley retainers (wire & acrylic) can last 5+ years if cared for properly.
  • Clear plastic retainers (Essix) should be replaced every 6–12 months due to natural wear.

If your retainer is cracked, warped, or no longer fits correctly, contact our office to get a replacement.

At Robert Stoner Orthodontics, we understand that Greensboro’s hard water can make retainer and aligner care a little tricky—but with the right cleaning routine, you can keep your appliance fresh, clear, and bacteria-free!

If you have any questions about cleaning your retainer or need a replacement, give us a call today.

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I just love the whole place awesome staff amazing doctor always address my concerns and very healthy i am very happy with my Invisalign treatment. Highly recommended in Greensboro
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Today is my last day with wearing my aligners. I have had a wonderful experience with Dr. Stoner. The ladies has all been so amazing when I come in. Dr. Stoner even bought a Smile Often shirt from my Niece! I am so happy I choose Dr Stoner!
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