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Do I really need an electric toothbrush?

Two features do the work, and neither is the price. Here is when it is worth $50 and when it is not.

Written by your hygienist, a licensed RDH in North CarolinaUpdated August 275 min read

We do not sell brushes, so here is the plain answer. An electric brush helps most people, and it helps for 2 reasons that have nothing to do with the motor being fancy.

The 2 features that matter

  • A 2-minute timer. Most people brush for about 45 seconds and are certain it was 2 minutes. The timer closes that gap the first night you use it.
  • A pressure light. Brushing too hard is the most common technique problem, and it wears the gum down at the exact line you are trying to clean.

A brush with both of those, around $50, does everything a $300 model does for your gums. The extra money buys app connectivity, travel cases and brushing modes nobody uses twice.

The head matters more than the handle. Past 3 months the bristles splay and stop reaching the gumline. The motor is fine. The head is not.

When a manual brush is the better answer

A soft manual brush used well beats an electric brush used badly. If money is tight, spend it in this order: something to clean between your teeth, then a soft brush, then an electric handle.

Manual brushes with many fine bristles clean the gumline well and cost about $10. Any brush whose package says soft or extra soft is an acceptable substitute for under $2.

One thing no brush of either kind can do is reach between your teeth. That is where most cavities and most bleeding start, and it needs floss or a small interdental brush.

Oscillating or sonic?

Round heads that rotate and oscillate have the longest track record for reducing plaque and gum inflammation. Sonic brushes also work well.

Pick by what you will actually keep using, and by whether replacement heads are cheap and easy to find where you shop. A brush you stop refilling heads for is a drawer ornament.

How to use one so it is worth the money

  1. 1Do not scrub. Let the brush do the motion — you only guide it, tooth by tooth.
  2. 2Hold it at 45 degrees into the gum edge, not flat against the tooth face.
  3. 3Give the inside of your lower front teeth real time. It is the most-missed surface in the mouth and where hard deposits form first.
  4. 4Switch which side you start on once a week. Everyone rushes the side their dominant hand reaches awkwardly.
  5. 5Replace the head every 3 months. A 4-pack of generic compatible heads costs about $10.

So, do you need one?

If your gums bleed, if a cleaning was recently called rough, or if you have never used a timer, an electric brush with a pressure light is worth the $50.

If your gums do not bleed and you already clean between your teeth daily, a soft manual brush is enough. Spend the money on interdental brushes instead.

This is coaching, not a diagnosis. Anything painful, loose or swollen, see your dentist.

Common questions

Is an expensive electric toothbrush better?
No. A 2-minute timer and a pressure light are what help your gums, and both come on entry models around $50.
Is a manual toothbrush enough?
A soft manual brush used with the right angle and a full 2 minutes is enough for many people. The bigger gap is usually cleaning between the teeth, not the brush.
How often should I replace the brush head?
Every 3 months, or sooner if the bristles splay. Splayed bristles slide over the gumline instead of reaching under it.
Do electric toothbrushes damage gums?
Not on their own. Pressing hard does, which is exactly why the pressure light is the feature to look for.

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