This creative department includes a transparent braces section and a plurality of directional texture lines. The transparent mouth guard portion has a plurality of tooth-shaped structures, and each tooth-shaped structure has an inner surface, an outer surface, and a bottom edge. The plurality of moving direction grain portions are provided on at least one of the plurality of tooth-shaped convex portions, and are located on one of the inner surface and the outer surface of the corresponding tooth shaped convex portions, each moving direction grain portion has a plural number Ridges. The vertical direction of the plurality of convex portions is used to show the direction of the corrective thrust of the transparent braces. Therefore, this case achieves the advantages of both showing the direction of the corrective thrust and the ease of making the relief.本創作係包括一透明牙套部及複數推移方向紋路部。透明牙套部具有複數齒形結構，每一齒形結構具有一內表面、一外表面及一底緣。複數個推移方向紋路部係設於複數個齒形凸部其中至少一者上，且位於相對應之齒形凸部的內表面、外表面其中一者上，每一推移方向紋路部係具有複數個凸紋部。複數個凸紋部之垂直方向用以顯示透明牙套部矯正推力之推移方向。故，本案達到兼具可顯示矯正推力的推移方向，及凸紋部易於製作等優點。
