| 释义 |
expansion arch ex·pan·sion archan orthodontic appliance that moves the dental structures distally, bucally, or labially, creating increased molar to molar width and arch length.ex·pan·sion arch (eks-panshŭn ahrch) Orthodontic appliance that moves dental structures distally, bucally, or labially, creating increased molar-to-molar width and arch length. |