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As is well known, protecting teeth should start from a young age. To do a good job, one must first sharpen their tools. Choosing a good toothbrush is also very important. So, how to choose a toothbrush that is suitable for children to use? Today we will follow the national standard for children's toothbrushes (GB 30002-2013) to get to know each other!
Specification of toothbrush
Parents must have a deep understanding when brushing their children's teeth. It is a difficult task to make children open their mouths obediently. If the brush head of the toothbrush is too large, it can be imagined how inconvenient the operation is, and the corners of the teeth are also difficult to clean properly. Relatively speaking, toothbrushes with smaller brush heads can rotate flexibly in children's mouths. Of course, it's not that the smaller the brush head, the better. A brush head that's too small can also affect the efficiency of brushing teeth.
Regarding this, the national standard specifies the specifications of toothbrushes. The length of the brush head arrangement for children's toothbrushes is ≤ 2.9 centimeters, which is approximately the length of 2-3 front teeth; The width is ≤ 1.1 centimeters, approximately no more than 4 rows of bristles, and the handle length is 11-18 centimeters. At the same time, the toothbrush head cannot be disassembled to prevent children from accidentally swallowing it.
The softness and hardness of bristles
According to national standards, the bristles of children's toothbrushes are soft bristles with a diameter of ≤ 0.18 millimeters. Thinner bristles can penetrate deep into the gaps between teeth, resulting in cleaner cleaning. But it's not necessarily the finer the better. For example, some ultra fine bristled toothbrushes with a diameter of only 0.01 millimeters may not have enough hardness to easily clean some thicker dental plaque.
It is recommended to choose nylon as the material for bristles. Nylon fibers are delicate and soft, which can clean the gaps between teeth, and have good elasticity and massage effect. At the same time, it is extremely wear-resistant and non absorbent, making it the preferred material for bristles.
How to determine if the bristles are moderately soft and hard?
You can press the bristles directly onto the back of your hand. If there is a sharp pain when lightly pressed, it indicates that the bristles are hard. If the bristles are not severely deformed and there is no sharp pain, it indicates that the bristles are moderately soft and hard.
Top shape and abrasion rate of bristles
The shape of the bristles at the top basically determines the wear on the surface of the teeth. As shown in the figure below, the top of the qualified bristles on the left is relatively round and dull, while the top of the unqualified bristles on the right is relatively sharp and has burrs. Under the same hardness, we prefer the shape of the bristles to be more inclined towards the left side, which not only has a cleaning effect but also reduces tooth wear.
According to the national standard, the top contour of the bristles of children's toothbrushes should be ground to remove sharp angles and should not have burrs. In addition, due to the fragility of children's oral cavity, the grinding index of children's toothbrushes is more stringent, with a grinding rate of over 70% for flat bristles and over 50% for irregular bristles.
Summary of Children's Toothbrush Selection
Brush head length
The brush head should be of a smaller size, capable of covering 2-3 front teeth, with no more than 4 rows of bristles.
Brush bristles soft and hard
The bristles should be chosen to be soft and hard, and lightly pressed on the back of the hand will not cause severe deformation or tingling sensation, and the top should be rounded.
Handle length
In terms of handle length, if it is to help children brush their teeth, it is recommended to choose a slender toothbrush. If children brush their teeth themselves, they can choose a thicker and shorter toothbrush with anti slip design.
Brush head bristle type
It is recommended that everyone choose a shaped bristle toothbrush with the same grinding rate, because shaped bristle toothbrushes can better help clean the lips, cheeks, and small gaps below the plane of the occlusal surface. At the same time, when brushing with excessive force, the contact pressure of shaped bristles on non flat surfaces will cause less damage to periodontal tissue.
Finally, it is important to choose the right toothbrush and replace it regularly. It is generally recommended to replace it every 3-4 months, but if you see that the toothbrush has blown or the bristles have become lighter in color, you also need to replace it in a timely manner.
