Once a dentist took macro photos of naturally lost teeth, which caused a lot of people to look around! The calculus could be seen clearly under the camera, and even some of them were densely covered with tooth roots. These pictures are very visual to let people know why their teeth are loose and falling out. The enemy retreats and I advance: calculus spreads downward step by step A tooth is divided into three parts from top to bottom: the crown, the neck and the root. The crown is exposed, which we can see; the neck, which is under the gums and cannot be seen; and the root, which is in the alveolar bone. If a person does not brush regularly, the crown of the tooth tends to grow calculus, which accumulates more and more and continues to progress towards the cervical part of the tooth, which is usually called “subgingival calculus”. Over time, the calculus gradually spreads downward from the crown of the tooth, and as the calculus progresses, the alveolar bone shrinks and the tooth loosens, and over time, the tooth gradually loosens and the calculus slowly spreads to the root of the tooth. Eventually, this tooth will fall out naturally. Regular scaling: effective removal of calculus When the calculus is deposited thickly and attached very tightly, it cannot be brushed off; at the same time, if it is not removed for a long time, it may cause gingivitis, periodontitis, bleeding gums, bad breath, and eventually cause loose teeth, or even fall off. At this time, it is necessary to remove the calculus by way of dental cleaning, and at the same time, dental cleaning can also reduce the inflammation of gingivitis and periodontitis, and discover the small imperceptible dental diseases, such as relatively hidden caries, to achieve early detection and early treatment. A few small habits to keep away from calculus 1, insist on brushing teeth, at least 2 times a day, 3 minutes each time; 2, conduct oral health examination once every six months; 3, choose soft bristle toothbrush, choose the right toothpaste; 4, eat less fine food, such as: cookies, cakes, etc.; (fine food is sticky, high sugar, very easy to deposit on the tooth surface, not only easy to form calculus, but also cause tooth decay.)