brush head is crucial as it is the component that directly contacts the teeth and gums and experiences the most wear. One of the key criteria for assessing the quality of an electric toothbrush head is the bristle roundness rate. According to China's national standard GB 39669-2020 General Safety Requirements for Toothbrushes and Oral Appliances, the roundness rate of toothbrush bristles is explicitly regulated: the roundness rate for adult electric toothbrushes must not be lower than 50%, while the standard for children’s electric toothbrushes is even stricter, requiring at least 70%.
What Is Bristle Roundness Rate?
The bristle roundness rate refers to the smoothness of the bristle tips. During the manufacturing process, bristles undergo grinding to smooth out sharp edges, resulting in rounded tips that minimize potential damage to teeth and gums. Although the difference is difficult to see with the naked eye, under a microscope, untreated bristle tips appear uneven and sharp, which can scratch the soft tissues of the mouth. In contrast, rounded bristles are smooth and plump, offering significant protection to the teeth.
Why Is Bristle Roundness Rate Important?
The roundness rate of electric toothbrush bristles directly impacts oral health. Sharper bristles are more likely to harm the tooth surface and gums, especially during daily brushing. The frequent friction caused by such bristles can have a negative effect on oral tissues. In comparison, bristles with a high roundness rate are gentler, reducing gum irritation and distributing cleaning forces evenly across the teeth. This prevents uneven pressure on tooth surfaces, helping to avoid long-term damage.
Choosing Electric Toothbrushes with High Roundness Rates
According to the GB 39669-2020 national standard, selecting an electric toothbrush with a compliant roundness rate is essential. Brush heads with a roundness rate exceeding 50% can significantly reduce tooth wear. This is particularly important after three months of use, as brush heads experience noticeable wear over time. Opting for brush heads with uniform bristle length and smooth, soft tips ensures better protection for tooth surfaces and reduces the risk of damage caused by over-cleaning.
The Relationship Between Bristle Roundness and Tooth Protection
Bristle roundness not only protects the teeth but also ensures balanced cleaning force. If bristles are too sharp, prolonged use can lead to uneven pressure on tooth surfaces, which may thin certain areas of the teeth or even create pits. Thus, choosing an electric toothbrush with soft, rounded bristles is crucial for maintaining dental health. Just as premium tools maintain the paint on a car, high-quality electric toothbrush heads ensure the longevity and health of your teeth.
Summary
Choosing an electric toothbrush that meets national roundness standards not only protects soft oral tissues but also reduces the risk of tooth wear. This is especially beneficial for individuals with sensitive gums, as high-roundness brush heads provide a more comfortable brushing experience.
Aiwejay Electric Toothbrush Bristles: Guaranteed High Roundness
Electric toothbrush manufacturer aiwejay strictly abides by national standards during product production, paying special attention to brush head design and manufacturing process. We use high-roundness bristles to ensure that the roundness rate of each bristle reaches more than 80%, far exceeding the standard requirements.
Whether it is an electric toothbrush for adults or children, Aiwejay is committed to providing users with a gentler oral care experience.
The high-roundness bristles effectively reduce damage to teeth and gums, ensuring that even with long-term use, your teeth and gums remain healthy. Choosing Aiwejay electric toothbrushes is a commitment to meticulous care for your oral health.
