What is deep overbite

summary

Teeth are our facade. When we smile with others, we have to show 8 teeth. This is very beautiful. Some people's teeth are deeply overbite, so they don't look good. Let's share some knowledge about deep overbite.

What is deep overbite

First, deep overbite is a kind of malocclusion caused by the vertical development of maxillary and mandibular arch and / or mandible. It refers to the patients whose incisal margin of the upper anterior teeth is more than 1 / 3 of the length of the crown of the lower anterior teeth, or the patients whose lower anterior teeth occlude more than 1 / 3 of the lingual side of the upper anterior teeth.

Then the upper central incisors are vertical or introverted, the incisors on both sides are inclined, or the upper incisors are introverted while the canines are inclined, or all the upper anterior teeth are introverted, and the coverage of the anterior teeth is less than 3 mm, sometimes 0-1 mm; or the upper and lower anterior teeth are crowded and introverted, showing severe occlusion, which can bite the lingual or labial gingival tissue of the upper and lower anterior teeth, causing acute and chronic periodontitis, resulting in alveolar bone absorption, tooth loosening, etc, The posterior teeth were neutral or distally related, and the lower arch was shortened. In deep overbite, the upper arch's compensation curve is opposite to the sagittal curve of the lower arch. The mandible's forward extension and lateral movement are blocked, and the mandible can only perform open and closed hinge movement.

Finally, functional mandibular retrusion, normal or excessive tension of labial and masticatory muscles, and high muscle potential during clenching. The shape of the facial jaw is well developed, and it is generally in the aspect. The height of the lower 1 / 3 is short, the mandibular angle is prominent, and the mandibular plane angle is low angle. The facial shape of deep overbite is lower lip valgus, forming horizontal deep chin wrinkles, chin protruding forward, nasal alar rising outward, upper lip shortening. This is the need to correct teeth, otherwise the teeth slowly develop, people will feel that the mouth of the teeth will be closed.

matters needing attention

People with deep overbite teeth should fix their teeth in time. Don't wait until they are very old to fix their teeth. At this time, the teeth have already been shaped, and the effect is very poor. When correcting the teeth, they should eat some liquid food.