Patent ID: 9084657
Filing Date: 2015-07-21
Classification: A61C

Abstract:
1. A dental appliance comprising: a shell having a number of cavities to receive and reposition one or more teeth, each cavity having an inner surface; and where at least a first portion of a particular cavity is scaled-up in size by a first selected uniform percentage over one or more dimensions of a corresponding tooth to provide a first space for the at least first portion of the particular cavity between the cavity inner surface and the corresponding tooth, where the particular cavity contains a chemical to treat the corresponding tooth, wherein the at least first portion of the particular cavity covers the corresponding tooth; where at least a second portion of the particular cavity is scaled-up in size by a second uniform scaled-up percentage over one or more dimensions of a corresponding gingival outer surface adjacent to the corresponding tooth to provide a second space, the second space being contiguous with the first space, wherein the second scaled-up percentage is different than the first selected percentage, wherein the at least second portion of the particular cavity covers the corresponding gingival outer surface; where the inner surface of the particular cavity has scaled-up proportions of the dimensions relative to the corresponding tooth; and where the first selected percentage is based on one or more properties of the chemical used to treat the corresponding tooth.