Plastic-Free Toothbrush at 71: Why I Put Boar Bristles on My Sonicare
I replaced the head on my Sonicare with boar bristles on a bamboo base. No nylon at all.
Here is why, and here is the part most reviews leave out.
What I Switched To
PRIMALS boar bristle replacement heads. They click onto a Philips Sonicare handle, which is what I already had sitting on the bathroom counter, so the switch cost me nothing but the heads.
Natural boar bristles on a bamboo base. Zero nylon. No plastic in the part that goes in my mouth twice a day.
One thing to know before you order. The boar bristle heads I use sold out shortly after I bought mine — it is a small brand and the listing only went up this spring. My link goes to the horse bristle version from the same company, which is in stock and is the softer of the two. Same bamboo base, same no-nylon idea, different animal. If you want the boar specifically, check back — I expect it to return.
That is an affiliate link. If you buy through it I earn a small commission at no extra cost to you.
Why I Bothered
I brush twice a day. That is roughly 730 sessions a year of dragging nylon across my teeth and gums, and nylon sheds. Researchers have measured microplastics coming off ordinary toothbrushes during everyday brushing.
I have written before about what I am trying to keep out of my body — right down to where my phone sits at night. I drink filtered water. I got the plastic pods out of my coffee. Meanwhile I had been putting a petroleum-based brush head in my mouth every morning and every night without ever thinking about it.
At 71 I am not going to pretend a toothbrush head is the thing standing between me and 200. It is not. But it is a small, cheap, permanent swap, and those add up faster than the expensive ones.
What the Evidence Actually Says
Here is where I have to be straight with you, because the marketing on natural bristles runs well ahead of the science.
There is no trial showing boar bristles clean better than nylon. None. Plaque removal depends far more on how long you brush and how soft the bristles are than on what the bristles are made of. Anyone telling you natural bristles give a superior clean is selling something.
The hygiene objection is real but overstated. Natural hair is porous and holds water longer than nylon, and dentists have raised that as a bacteria concern for decades. But the American Dental Association also notes that toothbrushes of every kind carry bacteria, and there is no evidence those bacteria cause harm. Forty years of counting bacteria on toothbrushes has established the contamination and established nothing about consequences. That applies to your nylon brush too.
What is not in dispute: nylon is plastic, it sheds as it wears, and boar bristles on bamboo are not plastic. If your reason for switching is fewer microplastics rather than a better clean, the reasoning holds up. If you are expecting whiter teeth, it does not.
How They Actually Feel
Softer than nylon. Noticeably.
The bristles have tapered natural ends, and on a sonic handle that translates to a polishing feel rather than a scrubbing one. My gums have not complained once, which is more than I can say for a few nylon heads I have tried.
They are rated medium-firmness, but they feel softer than that number suggests.
The blue tube in that photo is CardioSmile’s Breath of Life, the nitric oxide toothpaste I pair with these heads. I have used it twice a day for six months, and I wrote up the results in my CardioSmile toothpaste review.
The Honest Downsides
Three things you should know before you order.
The bamboo neck. One reviewer said the wooden neck tore up the corners of his lips and made it feel like splinters. I have not had that, but it is the most common complaint on the listing and worth knowing about.
They need drying. Porous bristles hold water. Rinse well, store upright, let them dry fully between uses. Do not cap them wet.
They are not vegan. They are pig hair. If that matters to you, the horse bristle version has the same problem and the plant-based nylon alternatives are a different product entirely.
Would I Tell Someone Else to Switch?
If you already own a Sonicare handle, yes. It is a few dollars a head, the clean is the same, and you take a daily plastic exposure off the board.
If you are hoping for better teeth, no. Brush for two minutes, twice a day, with a soft head. That is what works, and it works with nylon too. The same logic runs through my whole supplement stack: the boring, consistent thing beats the interesting one.
This one is on my toolkit page now with the rest of what I actually use.
Want to see the rest of what I do? Here is my full protocol list, my fitness routine, and every biomarker I track.
Live long and prosper,
Gary
A note from Gary: I am not a doctor, and I am definitely not your doctor. I am a 71-year-old running a 129-year experiment on myself and publishing the results as they come. Talk to your physician before changing anything about your own health.
These are products I use on my push to 200. I only put something on this list after I’ve tested it on myself. The links are affiliate links, which means I may earn a small commission at no cost to you.
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