Abstract: Flexible probing elements (4.1, . . . , 4.6) with different diameters are guided into an interdental space for determining a proximal allowance of the interdental space. The proximal allowance is determined according to the parameter values that correspond to the probing element that just barely fits through the interdental space. The probing elements (4.1, . . . , 4.6) can be realized on a probing tip (3) with a diameter that changes continuously or in a stepwise manner. The determination of the proximal allowance makes possible for an adviser to determine in an exact and reproducible manner the optimum interdental brush for the user.

Abstract: An interdental cleaning device having a clevis freely pivoted on one end of a shank. A brush carrier is detachably connected to and extends through the clevis and is engageable with a plurality of recesses formed on the end of the shank so that the clevis and associated brush carrier can be adjustably fixed at various angles to facilitate cleaning the interdental spaces from different sides of the oral cavity. A housing is provided which can be slidably mounted on the shank to provide either a handle for the device or a protective covering for the brush, carrier and clevis when not in use.

Abstract: A dental brush (2) is held exchangeably at one end of a handle (1). The handle end has a bolt thread (3) on which is seated a threaded sleeve (7), along with a passage bore (5) extending transversely through the bolt thread, and longitudinal groove (4). The bristle carrier (10) of the brush (2) is seated in a cylindrical mounting (13) of a synthetic resin, a cross member (14) forming an abutment integrally formed therewith at the free end of this mounting. The brush (2) is inserted with the bristle (11) leading through the passage bore (5), the cross member (14) is introduced into the groove (4), and the threaded sleeve (7) is threaded on the bolt thread (4) over the cross member (14), the latter being clamped in place between the sleeve (7) and the bottom of the groove (4).The mounting (13) provides a quick, effortless, and firm mounting of the brush (2) to the handle (1).