How does the wavy bristle design of the sonic battery-powered electric toothbrush fit the teeth better?

The wavy bristle design of the sonic battery-powered electric toothbrush achieves a more fitting cleaning effect by imitating the surface contour of the teeth and the gingival morphology, combined with the elastic deformation ability of the bristles. There are irregular curved surfaces and depressions at the junction of the occlusal surface, the gaps between teeth and the gums of human teeth. It is difficult for traditional straight-row bristles to completely cover these areas, while the wavy bristles can naturally fit the concave and convex structure of the teeth through the wavy arrangement. Similar to the wavy sofa cushion that can better fit the curve of the human body, the wavy bristles fill the "gaps" on the surface of the teeth through the ups and downs of the bristles distribution, improving the cleaning coverage rate.

When the wavy bristles contact the teeth, the high bristles will first contact the crown surface, while the low-lying bristles will penetrate into the gaps between teeth, gingival sulci and other areas due to elastic deformation. This "misaligned contact" allows the bristles to cover multiple cleaning surfaces at the same time. The wave pattern design makes the contact surface between the bristles and the teeth more uniform, avoiding excessive local pressure that damages the gums, while ensuring consistent cleaning strength in each area.

The undulating structure of the wave pattern is similar to a "guiding groove", which guides water and toothpaste foam to enter the gaps between teeth more efficiently during vibration, improving the efficiency of plaque removal. Studies have shown that the efficiency of cleaning the gaps between teeth with wave pattern bristles can be improved by about 20%-30% compared with straight row bristles.

The edge of the wave pattern bristles is softer, which can reduce the stimulation to the gums when it fits the gum line, and remove food residues and bacteria in the gum sulcus through high-frequency vibration. Traditional straight row bristles may not be able to fully contact the gum line due to angle problems, while the arc design of the wave pattern bristles can naturally wrap the gum edge.

The vibration direction of the bristles of the sonic electric toothbrush is horizontal high-frequency swing. The wave pattern design allows the bristles to form a more complex "sweep brush + vibration" compound motion when vibrating, further expanding the cleaning range. During the vibration process, the undulating structure of the wavy bristles will dynamically adjust the contact angle with the teeth to adapt to the cleaning needs of different positions.