1. Patients with crowded teeth: The appearance is that teeth come in and out, which is unsightly, difficult to clean, prone to dental caries, easy to form dental calculus and lead to periodontal disease.

2. Anterior malocclusion, also known as "floor covering", shows that the lower teeth bite on the outside of the upper teeth, and some people only have malocclusion; Some people not only have malocclusion of teeth, but also have deformity of facial bones, which is called skeletal malocclusion. It is characterized by hypoplasia-backwardness of maxilla and overdevelopment-protrusion of mandible, which leads to depression in the middle of the face and crescent-shaped profile, which affects the appearance and function.

3. Patients with interdental space show that there are many gaps between teeth.

4, deep coverage: also known as "protruding teeth", some only show the protrusion of the upper front teeth or the inversion of the lower front teeth; Some are skeletal deformities. Some of these people's front teeth and upper gums protrude excessively, but their chins shrink behind their upper lips, or they have no chin shape at all.

5, bimaxillary protrusion, or the protrusion of the upper and lower front teeth, leading to lip protrusion, you can forcibly close your lips and open your lips to show your teeth.

6, locked jaw: patients with teeth without occlusal function.

7. malocclusion of the posterior teeth and jaw locking: it affects the occlusal function of the teeth and may lead to the deviation of the upper and lower jaws for a long time.

8. Patients with deep overbite (too deep occlusion of anterior teeth): the lower anterior teeth cannot be seen when occluding; Some people are accompanied by skeletal deformity, which is characterized by short lower part. This deformity is easy to bite the upper gum, and it is also easy to cause periodontitis of front teeth and facial joint diseases.

(The doctor solemnly reminds me that because I can't see the patient face to face, I can't fully understand the condition. The above suggestions are for reference only. Please go to the hospital for specific diagnosis and treatment under the guidance of a doctor! )