How to choose the right toothbrush?

At Tandarts West in Rotterdam West we get this question at least five times a week: which toothbrush should I buy? The answer is more nuanced than a brand name. In this article I discuss what the research says, what I see working in practice, and which brush I recommend to my own family.

Electric versus manual: what does the research say?

The largest independent meta-analysis on this topic (Cochrane Review, updated in 2022) looked at 51 studies with more than 4,600 participants. The result: electric toothbrushes remove 11% more dental plaque after one month and 21% more after three months than manual brushes. Gum inflammation also decreased significantly.

I clearly see this reflected in practice. Patients who switch to an electric toothbrush almost always have less tartar and healthier gums at their next check-up, even if their other brushing habits have not changed.

A good electric toothbrush essentially works like a manual brush that moves perfectly hundreds of times per minute, without you needing to put effort into it.

Does this mean manual brushing does not work? Certainly not. With the right technique (the Bass method, small circular motions, 2 minutes long) you can also achieve perfectly good results with a manual brush. The problem: most people unconsciously brush too short, too hard, or miss spots. An electric brush makes those human errors less impactful.

Hard, medium or soft?

This is perhaps the most important choice, and most people get it wrong.

Soft: for (almost) everyone

A soft toothbrush flexes along with your gums and enamel. It removes plaque through movement, not through scrubbing. 95% of patients are better off with a soft brush.

Medium: for healthy gums and strong enamel

If you build up plaque aggressively and have perfectly healthy gums, medium can be a logical choice. But do not overestimate this: in most cases the medium bristles are unnecessary.

Hard: almost never

Hard toothbrushes are a relic from the time when we thought hard brushing was better. They cause gum recession, sensitive tooth necks and in the long term even loss of enamel. We only recommend hard for patients with a specific medical indication, and even then in combination with a dental hygienist who keeps an eye on things.

Sonic, oscillating or ultrasonic?

If you go for electric, you will run into three main categories.

Oscillating-rotating (Oral-B and similar)

A round head that alternately turns left and right, sometimes combined with a pulsating motion. Proven effective, slightly more aggressive in plaque removal. Suitable for patients who like to feel a mechanical difference.

Sonic (Philips Sonicare and similar)

The head vibrates 30,000 to 62,000 times per minute. The motion is subtler and pushes streams of water between your teeth, including the gaps the bristles cannot reach. Often more comfortable with sensitive gums.

Ultrasonic (premium segment)

Operates at 1.6 million vibrations per second, well above the audible range. Effective, but pricey (from around 200 euros) and little scientific benefit over sonic for most users.

My clinical experience: both oscillating and sonic work excellently. The best toothbrush is the one you consistently use twice a day for two minutes. Do you like oscillating? Stick with it. Prefer sonic? Fine choice.

How often to replace?

• Every 3 months as the standard advice from both KNMT and WHO.
• Sooner if the bristles splay out, because worn bristles clean up to 30% less effectively.
• Right after an infectious illness (flu, throat infection, cold sores) to prevent reinfection.
• Electric brush heads follow exactly the same 3-month rhythm. Many patients use them for too long.

Which toothbrush for receding gums, braces or children's teeth?

Sensitive gums or inflamed gums

Choose an extra soft brush (marked as "Sensitive" or "Extra Soft"). Sonic is often more comfortable than oscillating when there is inflammation.

Fixed braces (brackets)

Use an orthodontic brush head with V-shaped bristle pattern. Combine with an interdental brush and floss with superfloss.

Invisalign

A regular soft brush is sufficient. Do not forget to clean your aligners daily with lukewarm water and mild soap, not with hot water (which warps the material).

Implants

Soft brush plus daily interdental brushes to clean around the implant crown. Peri-implantitis (inflammation around an implant) often arises from insufficient interdental cleaning.

Children

From age 3 you can use a children's electric toothbrush. Up to age 8 a parent should brush over afterwards, since motor skills are not yet sufficient for effective self-brushing.

The best toothbrush per situation: our recommendations

Without receiving any sponsorship or kickbacks, these are the toothbrushes I recommend on a daily basis:

• Best value electric: Oral-B Pro 3 or Philips Sonicare 4100. Both around 50-80 euros, doing 90% of what the more expensive models do.
• Best manual: TePe Select Compact Soft. Slim handle, small head, comfortable bristles.
• For travel: A regular TePe or Curaprox manual brush, no charger needed.
• For children 3-6 years: Oral-B Stages Power or Philips Sonicare for Kids.
• For sensitive gums: Curaprox CS 5460 ultra soft (manual) or Sonicare Sensitive brush head.

Finally: an expensive toothbrush makes no difference if you do not use the right technique. Two minutes, twice a day, with gentle circular motions along the gum line. That is the real secret.