COMPOSITIONS, METHOD OF BONDING, AND ASSEMBLY

    公开(公告)号:US20210024793A1

    公开(公告)日:2021-01-28

    申请号:US16980130

    申请日:2019-03-06

    Abstract: A two-part curable composition comprises a Part A and a Part B. The Part A composition includes polyuretdione having an average uretdione ring functionality of at least 1.2. Part B composition includes polythiol having an average sulfhydryl group functionality of at least 1.2. At least one of the Part A composition and the Part B composition may further comprise accelerator for addition of the polythiol to the polyuretdione. The accelerator comprises a basic salt having the formula M+Zb−x y wherein M+ is a cation having a single positive charge a, wherein a is 1, 2, or 3; Zb− is an oxide anion having a negative charge b−, wherein b is 1 or 2; and x and y are positive integers, wherein x equals y times b. Cured compositions, methods of making them and articles including them are also disclosed.

    ORTHODONTIC APPLIANCE HAVING CONTINUOUS SHAPE MEMORY

    公开(公告)号:US20200315747A1

    公开(公告)日:2020-10-08

    申请号:US16907877

    申请日:2020-06-22

    Abstract: Continuous adjustment appliances are provided that can store a large number of geometries that can be successively accessed throughout orthodontic treatment, with each geometry can correspond to an arrangement of the patient's teeth. An appliance according to the present disclosure can be stimulated to transition among the myriad geometries, which can include changes to the overall shape of the appliance as well as the position and geometry of the cavities corresponding to a patient's teeth. Methods of creating the continuous adjustment appliances and methods of treatment using the continuous adjustment appliances are also revealed.

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