Abstract: Oral hygiene apparatus for destroying sensitized oral bacteria, comprising: an incoherent light source; and a light directing member, adapted for directing light from light source and onto at least part of a surface of at least one tooth within an oral cavity.

Abstract: A pH sensitive chewing gum kit is provided. The kit may contain chewing gum incorporating a pH sensitive substance. When chewed, the gum may change it's color in response to the oral fluids or salivary pH level. The chewing gum kit may also contain chewing gum with or without artificial sweeteners and one or more pH sensitive members including at least one pH sensitive substance incorporated in at least one portion thereof. When a pH sensitive member is put in contact with oral fluids or saliva, before, during or after chewing the gum, the color of the pH sensitive substance may change to a color which depends on the oral fluids pH value. This color may indicate whether the gum still needs to be chewed in order to achieve a desired oral fluids pH level.

Abstract: An apparatus and method for removing hairs from a region of skin, the apparatus including: a housing having an opening therein, the housing forming a cavity enclosing a volume of air when the opening is placed in contact with the region of skin; a switchable heat source disposed within the housing that rapidly heats the volume of air to a temperature sufficient to destroy the hair by conduction of heat along the length of the hair to a follicle thereof; and a power source that controllably energizes the heat source.

Abstract: A non-linear optics device (NLOD) of the kind in which an incoming pumping beam having an intensity below a certain threshold is transmitted through the device, whereas a beam having an intensity above the threshold induces a Stimulated Brillouin Scatter (SBS) process giving rise to the reflection back of the beam in an opposite direction. The device includes one or more optical fibers having each a cladding and a core consisting of a non-linear substance which, as a rule, is composed of two longitudinal sections integral with one another, one having a uniform diameter and the other being tapered. The core surface is diverged towards one end of the fiber. Each optical fiber is so oriented that the end of the tapering section faces the incoming pumping beam. Accordingly, when an oncoming pumping beam is incident on the surface of the tapering core portion at an angle below a certain critical angle, it is transmitted to the uniform core section.