Abstract: The invention relates to a polishing element for use in a system and apparatus and a method for finishing and polishing a dental composite restorative material in a tooth. The system of the invention uses an elastomeric polymer disc which is impregnated with an abrasive for reduction of the composite, and an element for polishing the composite as well as the dental materials. A method of using the above apparatus in a finishing/polishing system is also provided.

Abstract: The invention relates to a system and apparatus and a method for finishing and polishing a dental composite restorative material in a tooth. The system of the invention uses an elastomeric polymer disc which is impregnated with an abrasive for reducing of the composite, and a felt, suede, or elastomeric polymer foam element for polishing the composite. A method of using the above apparatus in a finishing/polishing system is also provided.

Abstract: A combination mixing and discharge capsule for storing separate ingredients which are to be mixed together prior to use and including a container body for one ingredient closed at one end by a slidable piston and the opposite end being displaceably received in a cup-shaped cap which forms a second compartment with a perforated wall of the container body opposite the end containing the piston for receiving a frangible pillow containing a liquid second ingredient to be mixed with the ingredient in the body. The cap has a discharge nozzle extending axially therefrom and when the cap is displaced farther onto the body the innermost wall of the pillow is burst to cause the discharge of the liquid ingredient through the perforated wall end into the container body for mixing with the ingredient therein.

Abstract: An ultrasonic endodontic file that is resistant to failure from fracturing and breaking during operation by having an ideal length, which if increased or decreased by more than 1 mm, will result in increased file breakage.

Abstract: A combination mixing and discharge capsule for storing separate ingredients which are to be mixed together prior to use and including a container body for one ingredient closed at one end by a slidable piston and the opposite end being displaceably received in a cup-shaped cap which forms a second compartment with a perforated wall of the container body opposite the end containing the piston for receiving a frangible pillow containing a liquid second ingredient to be mixed with the ingredient in the body. The cap has a discharge nozzle extending axially therefrom and when the cap is displaced farther onto the body the innermost wall of the pillow is burst to cause the discharge of the liquid ingredient through the perforated wall end into the container body for mixing with the ingredient therein.