1. Look at the edges
The accuracy of the edge of the porcelain tooth is the most basic and important criterion for identifying the advantages and disadvantages of the porcelain tooth, and it is also a place with many problems at present. The precision is reflected in the seam between the porcelain crown and the teeth, the smaller the gap, the better, otherwise bacteria will easily enter, leading to caries and fracture inside the teeth, resulting in the failure of restoration. The gap is located below the gums and is often overlooked by the patient. This gap will accompany the porcelain tooth for life and determine the fate of the natural tooth. This is also the key to testing the skill level of the doctor, where the highest technical content is the most advanced, and every step of the treatment process has an impact on the accuracy of the porcelain tooth.
2. Look at the color
The color of the porcelain crown is soft, not the whiter the better. In order to cover the color of the metal inner crown, it is necessary to have a certain thickness of the porcelain layer. The thicker the porcelain layer, the better the aesthetic effect. Clinically, if the tooth preparation is insufficient, it is easy to appear chalky or dull and hypertrophied porcelain teeth. However, in order to achieve aesthetic results, the amount of tooth grinding is too large, which can easily cause the exposure of the dental nerve and increase the possibility of breakage. Therefore, it is necessary to master precise tooth preparation techniques to ensure sufficient porcelain thickness without damaging the dental nerve.
3. Look at the form
The morphology of the teeth is normal, not hypertrophied, and there is no foreign body sensation on the lips and tongue. There is usually a mistake in clinical practice, that is, the porcelain teeth are hypertrophied, which leads to discomfort in the lips and tongue, and the teeth feel very thick, and at the same time, the thickening of the face and the poor shape of the teeth cause the gums to be irritated unfavorably, resulting in the swelling of the gums. This is due to the fact that the cutting is not uniform and accurate, and at the same time, it is necessary to have a clear grasp of the characteristics and performance of various porcelain crowns, and to make personalized tooth preparation, so as to ensure the minimum amount of tooth tissue under the condition of ensuring sufficient porcelain layer thickness.
4. Look at the gums
There should be no bleeding during the gingival operation, and there should be no redness, swelling, congestion, or discoloration after the operation. Gum problems are often overlooked, and most of the failed cases have gum problems. You can observe the gums of the patients who do porcelain, and if there is no redness, swelling and bleeding, it is half the battle. The gums are not sensitive to pain, and even if they are injured, they will not have severe pain, but the health of the gums is an important indicator of the success of porcelain teeth, and every step in the production process has an impact on the gums. If the gums are not carefully protected during the operation, the gums will often be bleeding and damaged, which is easy to cause redness, swelling, bleeding and atrophy of the gums after wearing porcelain teeth, which will affect the aesthetics of the front teeth. At the same time, it is not conducive to high-precision molding. The redness, swelling, congestion, and discoloration of the gums after surgery are mostly caused by the insufficient fit between the porcelain crown and the teeth, and some are caused by metal allergies.
5. Look comfortable
Porcelain teeth need to be ground to remove a part of the tooth tissue, and modern anesthesia techniques can ensure that the whole treatment process is painless. The key issue is to ensure that the dental nerve is not damaged during the tooth preparation process. At the same time, the adaptation time of qualified porcelain teeth is also very short, and it usually feels normal within a few days. The whole treatment process is required to be painless, and the postoperative adaptation period is short.
6. Look at the function
Porcelain teeth should be beautiful without affecting the original tooth function. Patients who lack specialized knowledge may not be immediately aware of the abnormalities or loss of physiological functions, and may not be aware of the complications they cause, and the consequences will remain with them for the rest of their lives. Porcelain crown restoration is a highly technical treatment project, to make a high-quality porcelain crown, it must go through strict design, accurate colorimetry, precise tooth preparation, careful gingival protection, thorough dentin sealing, high-precision impressions, perfect temporary crown production, meticulous and rigorous production by technicians, qualified crown bonding, fine blending and polishing and other steps. Neglecting any of these steps will result in a decrease in the quality of the porcelain crown.