The main causes of mouth convexity in orthodontics are dental and osseous, and the diagnosis is based on x-rays, clinical observation and typical facial features. 1.How to determine whether you have a convex mouth? You can use a ruler or simply place your index finger on the tip of your nose, lips, and chin, and if the facial form is normal, the three points can be connected into a straight line. If the chin cannot be connected, or if the lips protrude outside the line between the tip of the nose and the chin, you can basically determine that the mouth is convex. If you have a convex mouth, you are likely to encounter the following situations: A You are often told that you are too high and cold, and when you don’t smile, people think you are angry. B mouth will unconsciously open, sleep often drool. C gums will be exposed when laughing, only dare to cover the mouth to laugh. 2.How to distinguish between dental mouth convexity and bony mouth convexity Dental mouth convexity: the incisors as a whole protrude forward, the teeth are tilted towards the lip at a large angle, and the base of the nose does not protrude below. Bone mouth convexity: the teeth are upright or inwardly buttoned, but the mouth is still protruding. The upper jaw and nose are protruding, and the lower jaw is protruding due to the alveolar bone and teeth, causing the lower lip to turn out. If it is a simple dental protrusion, conventional orthodontics can achieve the desired treatment effect. If the protrusion is bony, orthodontic treatment alone can improve it to a certain extent. To completely change the facial shape, combined orthodontic + orthognathic treatment is usually required. The specific treatment plan needed is determined by the professional doctor after the relevant examination and according to the patient’s personal demands. 3.Can the orthodontic treatment really improve the convexity of the mouth? In fact, among the patients we have contacted in the past, many of them have good features, but their temperament is ruined by the convexity of their mouths. According to our contact with a large number of cases: the majority of patients with convex mouth through orthodontic recovery of teeth, alignment of teeth, after the end of correction will have a very significant change, want to improve the mouth of the small partners should act quickly.