Abstract: A device for flossing teeth includes a base unit defining a handle and a disposable head unit that removeably attaches to a top end of the base unit. An electric motor in the base unit, powered by a rechargeable battery, rotates a shaft upon operation of a switch. A pair of hollow tubular arm members extend from a top of the head unit and terminate at opposing open distal ends to define a gap therebetween. A predetermined length of dental floss is partially wound on a first wheel within a clean floss chamber of the head unit and extends through the arm members and across the gap without contacting the distal ends, thereby preventing the transfer of plaque, food particles and bacteria onto exposed surfaces of the arm members. Used floss is wound onto a second floss wheel in a segregated floss collection chamber.

Abstract: A lap roller apparatus that enables a single individual to simultaneously seal the system and roll the lap of a protective membrane includes an elongated handle with one distal end having a plurality of rollers rotatably supported on a transverse axle, wherein at least one of the rollers is able to rise and drop, perpendicular to the axis of rotation, to a greater extent than the other rollers as the rollers travel along the lap.