Perio Toothbrush is unlike any conventional toothbrush on the market. Ordinary bristles of toothbrushes are made of nylon. The nylon monofilament bristles have the advantage of proper resilience and flexibility, but are disadvantageous in that they are highly water-absorbent and are easily deformed. The nylon monofilament bristles are not soft because they must be thick in order to maintain desired flexibility. Generally, the nylon monofilament bristles are each rounded at their ends in order to prevent the gums from being injured during brushing. The Dr. Collins Perio Toothbrush bristles are made of a polyester compound which is more durable and longer lasting than nylon. These unique bristles absorb less water and are preferable to use for toothbrush bristles. However, the standard monofilament bristles made of such polyester compounds are often too stiff and inferior in their flexibility, which may damage or injure the gums. To overcome these disadvantages, the ends of such polyester bristles were tapered into a needle-shape with each bristle measuring 0.02 mm or less in diameter. These bristles are now thinner and more flexible than the standard nylon bristles allowing for better interdental cleaning. These longer lasting bristles are also less porous and harbor less germs. This patented tapering technique can only be found on the Dr. Collins Perio Toothbrush!