Is it okay to brush your teeth with cold water for a long time?

　　Brushing your teeth with cold water for a long time

　　Data show that human teeth are most adaptable to a temperature of 35 to 36.5 degrees Celsius. If cold water is often used to stimulate the teeth, it will lead to gum bleeding, pulp spasm or other dental diseases.

　　The lifespan of teeth is on average more than 10 years shorter than human lifespan. The root cause lies in the habit of "brushing teeth with cold water".

　　healthy People generally brush their teeth 1 to 2 times a day for 3 minutes after meals, but it does not affect the gums or periodontal health. disease People should emphasize brushing their teeth in the morning and evening, and once more after lunch, brushing for 2-3 minutes each time. The correct way to brush your teeth is the short horizontal brushing method and the vertical turning method.

　　Short horizontal brushing method (also known as horizontal trembling method): The horizontal brushing method that people are accustomed to is a long sawing action. This horizontal brushing method will cause periodontal damage if a hard-bristled toothbrush is added (bristle damage to the gum edge, gum recession, wedge-shaped defects in the root and neck, etc.). The short horizontal brushing method uses short trembling horizontal brushing movements to clean plaque best, so it is also called the in-sulcus brushing method. Place the tip of the bristles at an angle of 45° with the gingival surface of the teeth and apply slight pressure. Part of the top of the bristles enters the gingival sulcus, and part of it is outside the sulcus. Then vibrate back and forth 6 to 8 times. The bristles move only 1 mm during vibrating. When brushing the lingual and palatal surfaces of the upper and lower front teeth, if the dental arch is narrow, you can hold the toothbrush head upright and make short horizontal brushing movements. At the same time, you should also pull and brush the occlusal surface of the back teeth to clean the pits and fissures on the occlusal surface.

　　Vertical rotation method: It can effectively remove plaque and soft scale, and can stimulate gingival keratinization and maintain the normal appearance of the gums. There is a wide range of toothbrushes available, including hard-bristled and medium-hard-bristled toothbrushes. elderly , children or after periodontal surgery should use a medium-hard or soft-bristled toothbrush. The action of brushing the buccal and lingual surfaces of the back teeth is to place the bristles parallel to the long axis of the teeth, close to the tooth surface, and point the bristles toward the gingival margin. Apply pressure and twist the toothbrush so that the bristles form a 45° angle with the long axis. Rotate the toothbrush, that is, brush the bristles downward along the interdental space when brushing the upper teeth, and brush from the bottom when brushing the lower teeth. Pay attention to moving slightly slower, with a little tremor, and repeat the same part 5 to 6 times. Brush the lingual and palatal surfaces of the front teeth with the same rotational motion as above. For those with narrow dental arches, you can hold the toothbrush vertically, press some of the hair bundles on the gums, and pull the brush coronally along the interdental space, while simultaneously pulling and brushing the occlusal surfaces of the back teeth.

　　Because toothpaste contains abrasives and detergents, they can prevent caries, reduce inflammation, stop bleeding, prevent acidity, relieve pain, inhibit tartar, and reduce toothpaste. Bad breath , so using toothpaste when brushing your teeth can enhance the effect of cleaning your teeth.