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专利名称：Radicular spectral attenuation coefficient for
use in endodontic foraminal locator
发明人：Humberto Remigio Gamba,Ronaldo
Piazzalunga,Joaquim Miguel Maia,CarlosAlberto Spironelli Ramos,Alexandre SalcedoRatzke,Marcos Vinicius Haas Rambo
申请号：US120654申请日：20060209公开号：US08348863B2公开日：20130108
专利附图：
摘要：The discovery of a new coefficient named “Radicular Spectral AttenuationCoefficient-RSAC”, applicable in electronic foramen locators is described. The novelty isthe use of the spectral attenuation of a multifrequency electrical current signal, appliedthrough the endodontic file into the tooth canal (TC), to determine the root length andthe foramen position. FIG. (): (), (), () and (), (), () are the amplitude and frequency axes,respectively; () is the electrical current frequency spectrum applied into the TC; () showsthe spectrum exponential decay () of the signal measured over the TC. In () the axes () and() were logaritmized to linearize the exponential decay. The RSAC is the averageinclination of the line (), which is proportional to the distance between the tip of theendodontic file and the apical foramen. The RSAC changes as the tip of the file gets nearthe foramen.
申请人：Humberto Remigio Gamba,Ronaldo Piazzalunga,Joaquim Miguel Maia,CarlosAlberto Spironelli Ramos,Alexandre Salcedo Ratzke,Marcos Vinicius Haas Rambo
地址：Curitiba BR,Londrina BR,Curitiba BR,Londrina BR,Curitiba BR,Curitiba BR
国籍：BR,BR,BR,BR,BR,BR
代理机构：Workman Nydegger
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