Explain the function and characteristics of impression silicone rubber products.silicone baby cup Vendor

　　The silicone rubber process is widely used. At present, our common dental impression method is officially one of them. In many industrial sites and commercial models, silicone rubber product impression processing is required. In addition to silicone rubber impressions There are other processes such as alginate, agar, etc., but most of them still choose silicone rubber products. The main reason is that the product has good performance, good accuracy, and stable quality!

　　Overview of the advantages of silicone rubber impression:

　　1. Classification of common impression materials

　　(1) Alginate: The advantage is that it is cheap and easy to operate; the disadvantage is also obvious, the shrinkage is relatively large, and it cannot accurately reflect the shape of the teeth.

　　(2) Agar: The advantage is that it is cheap, and the disadvantage is that it is easily broken and brittle.

　　(3) Silicone rubber: This refers to the addition type silicone rubber, such as Huge silicone rubber (as shown below), which is the most common brand on the market. Its advantages are high precision, very stable, and can be used for the production of various restorations.

　　2. Overview of silicone rubber impression materials

　　Silicone rubber belongs to polymer synthetic rubber and is an elastic irreversible impression material. In recent years, it has been widely used in the medical field and is currently the most ideal type of impression material. Its advantages are mainly reflected in the following three aspects:

　　(1) The size is more stable after solidification, and the dimensional change within 24 hours is stable at about 0.1%;

　　(2) The operation time is short and the solidification in the oral cavity is fast. The initial impression is 3 minutes to solidify, and the second impression is 3 and a half minutes;

　　(3) The impression has high precision and good operation performance; in addition, the silicone rubber impression material of addition type is used in a 1:1 mixture of rubber components with the same viscosity, which brings convenience to clinical work.

　　3. Detailed explanation of silicone rubber operation (with pictures)

　　1. Choose a suitable tray for the patient, the tray is required to be 3-4mm away from the patient's teeth;

　　2. Clean and dry hands, do not wear latex gloves during operation;

　　3. Take the first impression

　　(1) For the substrate and catalyst, it is recommended to take one full scoop for the upper jaw and one flat spoon for each of the lower jaw to ensure that the substrate and catalyst are 1:1;

　　(2) Use your fingertips to mix until the color is uniform without streaks, squeeze the mixed initial impression into strips and put them in the tray, then put them in the mouth, and take them out after 3 minutes;

　　Note: The solidification time of polyaddition silicone rubber is greatly affected by temperature, and the solidification is faster when the temperature is high.

　　4. Trim the first impression

　　Use a special trimmer to remove the undercuts on the shoulders, gingival papilla, and interdental spaces of the initial impression, repair the overflow, facilitate the placement of the secondary impression, and reduce air bubbles

　　5. Take the second impression

　　The light body that has just been punched may affect the solidification due to uneven mixing. It is recommended to throw away 1-50px of the front material; put the tray filled with the light body material into the mouth, slowly and once in place, about 3 minutes and 30 seconds. After curing, take it out of the mouth;

　　6. Complete and check the impression

　　(1) For the impression made, the subgingival margin at the preparation site is clear and complete, without air bubbles, and the shoulder is clear and continuous;

　　(2) After the impression is taken out of the mouth, it can be placed for 30 minutes (it can still be used within 30 days), no need to rush to fill the mold, it can be directly sent to the processing plant after soaking and sterilizing;

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