A month without brushing will lead to bleeding and red gums, increase the possibility of dental caries, the accumulation of soft tartar on the surface of the teeth, heavy oral odor, affecting the image. 1. Not brushing for a month will lead to inflammation and swelling of the gums, the surface of the teeth will accumulate a large number of soft tartar, breeding a large number of bacteria, resulting in adverse effects. Symptoms can be seen in the gums will bleed when eating, soft scale in a long time under the accumulation of calcium salt deposition, and gradually form dental calculus. Initially, gingivitis will occur, and for a long time it will aggravate to form periodontitis. 2. A month without brushing will lead to heavy oral odor, most of the bacteria in the mouth for anaerobic bacteria, because every day you need to eat, do not brush your teeth will lead to a large amount of food debris in the mouth, long time accumulation in the teeth will produce odor. 3. a month without brushing will also increase the risk of dental caries, tooth surface accumulation of food debris, sugar in the food deposited on the tooth surface, will produce acid corrosion of the tooth surface, resulting in the teeth of the tooth surface will have the risk of caries. Maintaining intraoral hygiene and good oral cleaning habits is very important, not only to reduce the risk of oral disease, but also to maintain a good personal image. It is recommended to brush your teeth at least twice a day for no less than two minutes each time. Choose the pasteurized brushing method for brushing your teeth.