In terms of processing technology, the invisible denture is essentially different from the traditional PMMA resin. The traditional PMMA thermosetting resin is completed by a programmed heat treatment process, which is thermally initiated and solidified. The programmed water bath temperature is controlled between 60-100 ℃, while the invisible denture needs a pressure injection process, which requires a special resin filling machine, a special elastic resin (valplast company of the United States), an electric resin oven Special box, natural cooling after 287 ℃ injections.
In theory, the invisible denture is suitable for all kinds of missing teeth. Even in the case of missing anterior and posterior teeth, the remaining teeth have large inverted recesses, and there is no common placement path, the invisible denture can still be inlaid. Because the invisible denture base has high elasticity and can be twisted, the denture can be put in place by twisting and rotating when it is put in place. After it is put in place, it is not only well fixed, but also well sealed, and will not be inlaid with food.
The invisible denture has the advantages of the high elasticity, anti-fracture, invisible base, beautiful appearance, simple and quick operation, fewer molars, or no molars. Especially for the defect of anterior teeth and premolars, the traditional removable denture is affected by the exposure of metal clasp, while the invisible denture base is invisible, the material has high folding resistance, can be made thin and comfortable, and the elastic material can enter into the undercut area of the abutment and have good tightness with the mucosa, good retention, and easy to take and wear.
For the clinical crown too long, root exposure and neck hypersensitivity caused by periodontal disease or wedge-shaped defect, the clasp of the invisible denture can form the gingiva to cover the neck of the overlong abutment teeth, improve the crown too long, restore the beauty of the patients with gingival atrophy of the front teeth, and reduce the sensitivity of the neck exposure.