Abstract: A method for a person to control transmission of particles to and away from his/her frontal face region including the step of obtaining a face covering apparatus with a frame that can be held on the person's head and a covering assembly on the frame. With the frame on the person's head, the wall structure on the covering assembly is movable between blocking and staging positions. In the former position, the wall structure blocks airborne particles moving toward and away from a person's nostrils and/or mouth. In the latter position, the wall structure does not reside directly forwardly of the person's frontal face region below a horizontal plane at or above a top of the person's mouth.

Abstract: A face covering apparatus and method of using the apparatus. A frame is configured to be placed in an operative position on a wearer's head and releasably maintained in the operative position by at least one of: a) resting upon one or both of a wearer's ears and b) frictionally engaging a part of the wearer's head. A covering assembly on the frame has a wall structure with: i) a first region configured to conform to the wearer's face region around the wearer's nose; and ii) a second region configured to conform to the wearer's face region around the wearer's mouth. The face covering apparatus is configured so that with the frame in the operative position on the wearer's head and the wall structure in a blocking position on the frame, the first and second regions on the wall structure together reside in the path of airborne particles moving: A) in a forward direction from the wearer's nostrils and/or mouth; and B) in a rearward direction towards the wearer's nostrils and/or mouth.

Abstract: A tooth cleaning apparatus having a tooth scrubbing assembly and a handle through which a cleaning portion of the tooth scrubbing assembly can be placed in operative relationship to a user's teeth and borne against surfaces of a user's teeth. The tooth scrubbing assembly is configured so that at least one of a) the cleaning portion of the tooth scrubbing assembly is preformed in a curved shape to conform to a curved arrangement of inside surfaces of a user's front teeth and b) a part of the tooth scrubbing assembly is flexible to allow conforming of the cleaning portion of the tooth scrubbing assembly to the curved arrangement of inside surfaces of a user's front teeth under a pressure as applied by a user during a tooth cleaning operation.