How Many Times Should You Brush Your Teeth? (Ireland Guide)

If you’ve ever stared at yourself in the bathroom mirror at 7 AM wondering, “Did I brush long enough?” you definitely aren’t the only one.

It’s a common sight in Irish households: brushing our teeth our whole lives on autopilot. But as it turns out, the details matter—like how many times a day you really need to do it, if baking soda is actually safe to use, and why grabbing your toothbrush right after a whitening session is a bad idea.

Let’s cut through the noise and answer the most common questions we hear in the clinic.

The Golden Rule: Frequency & Duration

So, how many times should you brush your teeth?

The American Dental Association (ADA) and decades of scientific consensus are clear: you should brush twice a day for two full minutes each time.

Why isn’t once a day enough?

Even with perfect brushing technique, a single session isn’t enough to disrupt the sticky biofilm of bacteria (plaque) that constantly forms on your teeth. If plaque isn’t cleared away regularly, it hardens into tartar—and tartar can only be removed by a dental professional.

Brushing twice a day (ideally in the morning to remove overnight bacteria and at night to clear away daily food sugars) ensures your teeth stay protected.

Want to make sure you are using the right tool for the job? Read our guide on:
What Is the Best Toothbrush?

Should I Brush My Teeth After Using Whitening Strips?

The short answer: No. Never brush immediately after.

If you brush right after taking off your whitening strips, you risk irritating your teeth when they are at their most vulnerable. Here is why:

Whitening strips use peroxide-based gels to lift stains. While this process doesn’t alter the actual structure (histomorphology) of your tooth, it does leave your teeth highly sensitive for a short period of time.

If you take a toothbrush to your teeth while they are in this sensitive state, you can easily cause unnecessary discomfort and lasting irritation.

👉 The takeaway:
Wait 30 to 60 minutes after removing the strips before you brush. (To prep your teeth correctly, it actually helps to brush and floss before applying the strips instead!)

How Often Should I Use Baking Soda on My Teeth?

Baking soda (sodium bicarbonate) is an age-old remedy for a brighter smile, and scientifically, it is highly effective.

Many people worry that baking soda is too abrasive, but studies show it has a very low Relative Dentin Abrasivity (RDA) scale. It is actually gentler on your enamel than many commercial whitening toothpastes!

Baking soda helps to:

• Remove dental biofilm (plaque)
• Lift surface stains
• Neutralize harmful oral acids

The Catch: Pure baking soda does not contain fluoride.

Fluoride is essential for strengthening teeth and preventing cavities. Therefore, while brushing with baking soda a few times a week is perfectly safe for stain lifting, it should not replace your daily fluoride toothpaste.

Because the bristles you use matter just as much as the toothpaste, be sure to check out our article on:
When to Replace Your Toothbrush (and Why It Matters More Than You Think)

Why Do My Gums Bleed When I Brush My Teeth?

If your gums bleed when you brush, it is highly likely that your gums are inflamed, not that you are brushing “too well.”

The most common culprit is gingivitis—the early, reversible stage of gum disease caused by plaque buildup around the gumline. When the bacteria sit there, the gums get irritated, swell up, and bleed easily.

Other common reasons include:

• Pressing too hard against the gum tissue
• Using the wrong toothbrush (always use medium bristles for standard daily cleaning; soft bristles should only be used if specifically advised by your dentist!)
• Hormonal changes making gums hypersensitive

💡 If you are expecting a baby and noticing gum sensitivity, this is incredibly common. Read more about it here:
Bleeding Gums During Pregnancy: Causes and How to Manage It.

In summary, seeing pink when you spit is a sign that your oral care routine needs an upgrade, not a sign to stop brushing! If the bleeding persists for more than two weeks, be sure to book a visit with your dentist.

REFERENCE

• Hara, A. T., & Turssi, C. P. (2017). Baking soda as an abrasive in toothpastes: Mechanism of action and safety and effectiveness considerations. The Journal of the American Dental Association, 148(11), S27-S33.
• Li, Y. (2017). Stain removal and whitening by baking soda dentifrice: A review of literature. The Journal of the American Dental Association, 148(11), S20-S26.
• Myneni, S. R. (2017). Effect of baking soda in dentifrices on plaque removal. The Journal of the American Dental Association, 148(11), S4-S9.