Porcelain teeth match the form and shade of natural teeth, are comfortable for the wearer, have less foreign body sensation, and can restore good chewing function. As a result, porcelain teeth are becoming more and more popular among patients. But how can you get the most out of porcelain teeth? All you have to do is to correctly select a good pair of porcelain teeth, and then is to do a good job of maintenance. How to check the quality of porcelain teeth patients can check from the following aspects: 1, color: in natural light, the color and gloss of porcelain teeth should be similar to neighboring teeth, to be rich in layers and transparency; especially the front teeth, pay attention to the shade and gloss from the incisal edge to the cervical part of the teeth should be consistent. Tetracycline teeth and fluorosis patients should check whether the color of porcelain teeth and gums, skin color coordination. 2, morphology and alignment: porcelain teeth should have the normal shape of natural teeth, its size and adjacent teeth in harmony, and symmetrical with the same name. The incisive end of the front teeth should be on the arc of the dental arch, and the cusps of the back teeth should be located on the line of the natural tooth cusps. 3, the position of the edge of the porcelain teeth: the posterior edge of the porcelain teeth should be located between the tooth and the gingival margin, and deep under the gingival margin of about 0, 5 mm. From the appearance of porcelain teeth and gums into one, and no different from natural teeth. 4, the tightness of the gap between the teeth: porcelain teeth and neighboring teeth should be moderate contact. If it is too close, the patient has a serious sense of crowding; if the gap is too large, it is easy to cause food embedding and induce caries and gingival papillitis after eating. A moderate contact is a slight squeezing and swelling feeling of the patient, which can be self-checked by dental floss, that is, the floss feels a certain resistance when passing through the gap from top to bottom. 5, chewing comfort: after wearing porcelain teeth, patients should try the general biting action, feel whether the teeth in the chewing force is uniform, there is no soreness and swelling. How to self-maintenance porcelain dental use maintenance is very important, patients should pay attention to the following points: (1) when first wearing porcelain teeth generally have a mild discomfort, should be patient practice using, gradually adapt. (2) the first time to wear soft food, to adapt to eat normal food again. Porcelain teeth are hard and brittle, should try to avoid chewing too hard food, such as small walnuts, crab feet, hard shell melon seeds. (3) often keep the oral cavity clean, and develop the habit of brushing your teeth in the morning and evening and rinsing your mouth after meals. Every 6 to 12 months should regularly go to the hospital to ask the doctor for a comprehensive oral examination, in order to extend the life of porcelain teeth. (4) porcelain teeth if wearing inappropriate, pressure on the mucosa caused by pain, gum edge swelling and bleeding or tooth soreness, chewing pain, should go to the hospital in a timely manner to review.