. . "The toothbrush body can be molded of a variety of flexibly resilient materials, such as polyamide, i.e. nylon; polyester or a co-polyester; acrylonitrile butadiene styrene (ABS); polycyclohexylene dimethylene terephthalate that is acid modified (PCTA); or polypropylene; preferably polypropylene or if a ???transparent??? appearance is desired of polyester." . .