作者: Gregg L. Lage
DOI:
关键词: Toothbrush 、 Brush 、 Orthodontics 、 Screw thread 、 Anatomy 、 Bristle 、 Geology
摘要: A toothbrush having a handle rotated by forty five degrees with respect to its detachable and replaceable bristle head, whose bristles form contoured brushing surface three four alternating rounded peaks valleys, which has raised helical screw thread on neck that allows twirling motion at the impart diagonal direction of travel brush.