Experts believe that a good toothbrush should meet these conditions: The front end of the brush head should be round and blunt. It is best not to buy those square and triangular toothbrushes on the market. The length of the toothbrush head should be 2.5~3.2 cm, the width is 0.8~1 cm, there are 2~4 rows of bristles, 5~12 bundles of bristles per row, and the front end of the toothbrush head should be round and blunt. Each set of bristles should be of the same height. In today's toothbrushes, the bristles on both sides are curved and the bristles in the central region are shorter, but studies have shown that such toothbrushes have little ability to remove plaque. Therefore, it is recommended to choose a toothbrush with the same height as the toothbrush. More bristles are better. The bristles are usually arranged in bundles of 3 to 4 rows, and the bundle of bristles is more conducive to improving the cleaning efficiency. Spherical bristles of the bristles prevent gingival friction caused by straight cut ends. Do not choose bristles for toothbrushes. When choosing a toothbrush, press the bristles with your fingers. If the fingers have a tingling sensation, it means too hard and should not be used. The handle of the toothbrush should match the shape of the hand. There are two types of straight and angled models on the market. Clinical studies have shown that when used in a straight line, the force is not well controlled, while the angle type is more likely to reach the plaque removal area. Generally, the angle between the handle and the brush head is preferably 17°~20°. In addition, there are some toothbrushes for special people. For example, patients with periodontal disease can choose between the interdental toothbrush and the gum massage toothbrush, and those with inconvenient hands and feet can use an electric toothbrush. For some whitening toothbrushes on the market, experts pointed out that the design of the toothbrush should focus on the theme of efficient removal of dental plaque and maintenance of oral health. No toothbrush can deviate from the problem due to the side effect. Whitening toothbrushes may have some effect on removing the pigment on the teeth, but they may also damage the hard tissues and gums of the teeth. (Editor: Xu Xiaoyu) garments, clothing, top,trousers, coat, jacket Nanjing Intime Import and Export co., Ltd. , https://www.njintime.com
Expert advice on how to choose the most suitable toothbrush