Abstract: The invention is an open-ended ring used in the preparation of a tooth for a restorative procedure. The ring is used in conjunction with a shield to secure the shield between a tooth to be restored and an adjacent tooth. The result is a close contact being formed between the two teeth after restoration.

Abstract: A device for containing abrasive particles expelled from air-abrasive apparatus and permitting their facile removal without the aid of a vacuum source, while facilitating a relatively unobstructed view of the working area during use. One embodiment disclosed is a device for containing abrasive material expelled by a gas abrasive dental apparatus. The device comprises a flexible puncturable, substantially flat distal sheet comprising one side of the device for isolating a tooth surface to be abraded; a transparent, puncturable, substantially flat proximal sheet comprising the other side of the device; an enclosure for containing the abrasive material.

Abstract: An aqueous-based dental composition useful for desensitizing an exposed tooth surface in preparation for performing restorative work on the tooth surface. The composition comprises benzethonium chloride, 2-hydroxyethyl methacrylate, water and optionally a small amount of a fluoride salt. The composition is used in the method of repairing a damaged tooth.