1. American Dental Association - do they recommend a particular oral care regiment?
  2. ADA Accepted - are the RADIUS toothbrushes accepted?
  3. Animal Testing - are RADIUS products animal tested?
  4. Benefits - what are the benefits of using a RADIUS ?
  5. Bristles - what material are the RADIUS toothbrushes made from?
  6. Bristles - why so many?
  7. Bristles - are they polished and end rounded?
  8. Bubbles - why does the Original have them in the handle?
  9. Child Labor - does RADIUS have a viewpoint?
  10. Children - at what age should a child convert to an adult brush?
  11. Color in the bristles - what is it made from?
  12. Dentist - why doesn't my dentist give me a free RADIUS?
  13. Electric Toothbrushes - do they work and should I be using one?
  14. Handle - what material is the Original Toothbrush made from?
  15. Handle - what material is the SCUBA Toothbrush made from?
  16. Handle - what material is the Kidz Toothbrush made from?
  17. Handle - why so large?
  18. How long do RADIUS brushes last?
  19. Kidz - can adults use Kidz and get the same results?
  20. Left Hand RADIUS - why do retailers not stock them?
  21. Manufacturing - where are RADIUS toothbrushes made?
  22. Medium or Hard bristles - why doesn't RADIUS use them?
  23. Natural Bristles - why doesn't RADIUS use them?
  24. Original and the Scuba - what is the difference?
  25. Recyclable - what is recyclable?
  26. Replaceable heads - why not replace the head on a RADIUS?
  27. Right or left hand - why?
  28. Stores that stock RADIUS - where can I find?
  29. Toothbrushes - How are they made?
  30. Why is the head of the toothbrush so large?
  31. Why are the RADIUS toothbrushes so expensive?
  32. What do users think about RADIUS products?

American Dental Association - do they recommend a particular oral care regiment?

The ADA has a recommended regimen see Dental Tips

ADA Accepted - are the RADIUS toothbrushes accepted?

The Kidz, Original, and SCUBA have the official ADA seal but in general in the USA the ADA acceptance tends to mean for the company overall.

Animal Testing - are RADIUS products animal tested?

RADIUS does not do any testing on animals. We require statements from all of our suppliers that they do not do any testing on animals. We were recently Leaping Bunny certified and we are also certified Cruelty Free.

Benefits - what are the benefits of using a RADIUS ?

RADIUS uses an integrated approach to design toothbrushes that perform better than your standard toothbrush.


  • Improves gum health with soft wide massage.
  • Protects gumline to help reduce receding & bleeding.
  • Helps reduce risk of heart disease with healthier gums.
  • The only ADA Approved natural toothbrush brand.
  • Natural bio-plastic handle & bristles to eliminate fossil fuels.
  • Wide head format - brushes teeth and massages gums simultaneously
  • Angled brushing - the right/left hand configuration gives automatic 45 degree angulation to the teeth - as recommended by the ADA.

Bristles - what material are the RADIUS toothbrushes made from?

RADIUS bristles are vegetable based nylon. Our manufacturing process utilizes castor bean oil rather than petroleum decreasing our use of fossil fuels.

Bristles - why so many?

In lieu of using a small number of thick and hard bristles - we use a large number of very thin bristles - this develops the customary silky soft feel of a RADIUS - it allows you to brush for a long time without effort.

Bristles - are they polished and end rounded?

RADIUS makes its toothbrushes on Boucherie machines- this company is the leading manufacturer in the world of bristling machinery. All its machines automatically polish the toothbrushes as they are being bristled. RADIUS runs continuous checks during manufacture to ensure that polishing is up to our standards - see Manufacture for more information.

Bubbles - why does the Original have them in the handle?

The bubbles are caused by the plastic shrinking as it freezes from the heat of molding and falls into a bath of chilled water. We can eliminate the bubbles - but have found that most of our customers prefer them.

Child Labor - does RADIUS have a viewpoint?

RADIUS has signed all of the manufacturing protocols associated with the prevention of the use of child labor. Our own manufacturing facilities are in the USA and we have strict policies on the age of employees.

Children - at what age should a child convert to an adult brush?

RADIUS bristles are very soft and do not damage children's (or adults) teeth. The change should be made when the size of the child's jaw increases to the point where the KIDZ brush is no longer is doing an adequate job - this is typically at about 12 years old. Many adults with small jaws remain with the KIDZ forever.

Color in the bristles - what is it made from?

All bristle colors used comply with US Federal Drug Administration Regulation 21 CFR 178.3297 - colorant levels below 1% by weight and no heavy metal based pigments. All plastics and filaments have been tested for extraction and no significant colorant extraction shown. All colors comply with all applicable standards in Europe and to the US Food, Drug and Cosmetic Act.

Dentist - why doesn't my dentist give me a free RADIUS?

The ADA has certified RADIUS as" Accepted" after a rigorous certification process. RADIUS does sell to dentist offices. If your dentist is interested in purchasing RADIUS products to sell in their office, contact our Insides Sales Department at 800-626-6223.

Electric Toothbrushes - do they work and should I be using one?

There is an enormous amount of hype surrounding the marketing of electric and manual toothbrushes . The Cochrane Collaboration has done one of the rare studies on electric toothbrushes that was not financed and supported by manufacturers. The study makes the conclusion that most electic toothbrushes offer no quantifiable advantage over manual toothbrushes -"Manual versus powered toothbrushing for oral health (Cochrane Review)"

Handle - what material is the Original Toothbrush made from?

Cellulose Propionate, a wood based natural plastic, 93% of which is derived from sustainable yield forests in North Carolina.

Handle - what material is the SCUBA Toothbrush made from?

The soft rubbery plastic is Kraton and the head is polypropylene - both of these are derived from oil - unfortunately no natural alternative exists to create the flexibility.

Handle - what material is the Kidz Toothbrush made from?

Polypropylene - a very strong but light plastic derived from oil - for children these qualities overrode the choice of a natural plastic.

The RADIUS design uses a large handle to make holding the brush easy - many people transfer pressure onto their gums through gripping a flimsy toothbrush handle too tightly. Since the inception of the RADIUS Original in 1983 many other toothbrush manufacturers have followed us with larger handles - but because of the size of the toothbrush rack in stores - are not prepared to risk enlarging them to the size really needed.

How long do RADIUS brushes last?

We surveyed 1251 users in 2000 to find out how long.


  • 30% said 12 months or more
  • 30% said 9 months
  • 30% said six months
  • 10% said 3 months

Kidz - can adults use Kidz and get the same results?

RADIUS uses very soft bristles for adults and children. The Kidz brush has 5,000 bristles - over twice the number of standard brushes - it does an excellent job of plaque removal for children and adults.

Left Hand RADIUS - why do retailers not stock them?

Our lefties sell at about 35% of the rate of righties - amazing when you consider that lefties are only 9% of the population. Natural Products stores usually stock left. More traditional retailers have a volume mentality and do not consider 9% of the population to be a viable customer base.

Left Hand Kidz - why don't you make them?

Left-handers make up 9% of the population - the children's age group that the KIDZ is made for make up 9% of the population - this gives us 0.81% of the population. Many retailers indicated to us that they would not stock a product for such a small demographic group - unfortunately we were left with a sales base that is not big enough to cover the cost of the molds and machines necessary for manufacture (over $100,000).

Manufacturing - where are RADIUS toothbrushes made?

Kutztown - in Pennsylvania's Hex country - we restored the nineteenth century Heffner-Dietrich mill in the center of town in 1988. Our toothbrushes and all packaging are all made in this mill. RADIUS is one of the most hi-tech toothbrush manufacturers in the world and has state of the art equipment and quality control - see Manufacturing

Medium or Hard bristles - why doesn't RADIUS use them?

We agree with the position of the ADA - that medium and hard bristles can do serious damage to the teeth and gums.

Natural Bristles - why doesn't RADIUS use them?

The toothbrush product lines that we make were not designed for natural bristles.

Original and the Scuba - what is the difference?

The two toothbrushes share the same shape - the Original is made of rigid cellulose plastic - the SCUBA is made of flexible rubber. The SCUBA is aimed at heavy brushers - people who use too much pressure when brushing - it bends under pressure and lets you know.

Recyclable - what is recyclable?

The packaging of all RADIUS products carries the recycling code applicable to that material. Due to the dissimilar materials (bristles and handle are two different materials) and that toothbrushes have staples securing the bristles, they cannot be recycle coded. We have looked at having the toothbrushes returned to us - but have proved that it uses more energy and irreplaceable raw materials (in the form of oil) than it saves.

RADIUS turns into a wonderful kitchen vegetable brush and is very handy for years after it has retired from its oral hygiene role. For more information on recycling vs. returning - see -Environmental.

Replaceable heads - why not replace the head on a RADIUS?

Our mold and machine makers (in Belgium) feel that this would not be a safe design for the RADIUS Original and SCUBA - we are working on a new lighter toothbrush that will have replaceable heads.

Toothbrushes are used either right or left handed - our early experiments proved that it was easier to manipulate the brush and achieve excellent results with asymmetric brushes.

The asymmetric layout of the Original and SCUBA places the bristles automatically at an angle to the teeth - as recommended by the ADA

The offset of the head amplifies the movement of your hand - a small hand movement becomes a larger one in your mouth - this is sympathetic to the accuracy of human hand movement.

Stores that stock RADIUS - where can I find?

You may call customer service at 800 626 6223 for information on store locations.

A full description of the procedure is in About RADIUS see -Manufacturing.

The larger a surface - the lower the pressure applied. Having such a large head, RADIUS applies far less pressure on your gums - this allows you to massage and enjoy brushing - dentists have told us that the people who enjoy brushing are those who have great teeth. This is part of the basic design system of RADIUS toothbrushes


  • by using much thinner bristles we make the brush softer
  • by using a large head we increase the number of bristles to make it efficient at removing plaque and massaging gums.

We know from surveys that the most popular feature of our toothbrushes is the oversize head - 99% of our users liked this feature the most.

Why are the RADIUS toothbrushes so expensive?

They are made by hand from very high quality materials and each one is carefully inspected - standard toothbrushes are made automatically without manual inspection.
They last considerably longer and the life cycle cost is less than standard brushes. Our users report to us that 90% used their brush twice as long and 60% three times as long.

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"I hope nobody has used this because I have adopted it!" ... More


RADIUS® has a dedicated following of users including Sting, Cher, Whoopi Goldberg and many more. Read recent testimonials from fans.


The advanced technology in the RADIUS® Toothbrush appeals to dentists and those in the know - find out why and learn some valuable tips about oral hygiene.


RADIUS® was founded on the Caribbean island of Tortola. James O'Halloran and Kevin Foley were architects who were fascinated by the idea of a functional and enjoyable toothbrush.


Before RADIUS® embarks on making a new product, we put the concept through an evaluation to make sure that we are not just making some more landfill in the name of progress.