Grinding teeth first: In order to make the finished porcelain crown not exceed the thickness of the original external teeth, it is generally necessary to grind off some natural teeth when making porcelain teeth. In addition, in order to make the denture in place smoothly and obtain good retention, the abutment should be prepared into a certain shape. The quality of abutment preparation is related to whether the denture is easy to wear and firm.
Re-taking the mold: before sending it to the factory, the doctor must record the prepared teeth to provide a basis for making porcelain teeth. There are two steps: first, rough printing: rough printing with silica gel in bold, trimming the inverted concave part and repairing the overflow channel. Then take the fine impression: take the fine impression with a fine silica gel. Pressure-free reset is required, and the color of fine printing is uniform. In addition, the jaw position must be recorded: Methods Take it away with wax or silica gel, so that manufacturers can master the dynamic jaw position relationship.
Then color matching: in order to ensure that the color of porcelain teeth is similar to that of the original teeth or adjacent teeth, doctors must quickly browse the color card and compare it with the color of the original teeth of the affected teeth to determine the approximate hue range on the color card. Requirements: Under natural light, choose the color of the upper part of natural tooth crown 1/3, take this area as the basic color of porcelain teeth, and then compare the colors of neck and cutting end with the main color to determine the colors of these two areas. Because the colors of the neck, middle and cutting end are different, the brightness of the cutting end is the highest and the color of the neck is the highest. Conditionally take a series of digital colorimetric photos and send them to the mechanic in the form of U disk. So we must make a comprehensive analysis. After accurate color comparison, it can be sent to the factory for processing.
The final try-on bonding: the porcelain teeth made after about 1 week can be completed. Try it on first and then check the tightness of the shoulder pads, that is, whether the edge of the crown is suitable to meet the standards, whether the color is consistent, whether the shape is beautiful, and whether it is adjacent and occlusal. If it is confirmed that there is no problem, the doctor will stick it to the pre-repaired tooth with a special adhesive, and the restoration of porcelain teeth will be completed.
Experts from Shanghai Armed Police Corps Hospital reminded that if you want to make porcelain teeth more elaborate, you must choose a regular professional stomatological hospital!