Abstract: A dental apparatus and method, for example an endodontic apparatus and method, is disclosed. The apparatus includes: a supply of fluid; a pump for delivering fluid from the supply under pressure and a handpiece in fluid communication with the pump. The handpiece includes a needle 30, extending from a rearward end proximal to the handpiece to a forward tip distal from the handpiece, a lumen of the needle extending to an opening at the tip to deliver fluid received from the pump to a tooth. The dimensions of the needle and the delivery pressure of the fluid are selected such that the flow of fluid through the needle causes a cloud of inertial cavitation to be formed forward of the needle tip.

Abstract: The present invention provides a polymerizable sanitizing formulation for forming a polymerized anti-microbial agent retaining material on a contact surface. The polymerizable sanitizing formulation comprising: a) a polymerizable water-soluble material; b) at least one initiator for radical polymerization of the polymerizable material to form a polymerized anti-microbial agent retaining material; c) at least one anti-microbial agent for retention within the polymerized anti-microbial agent retaining material; and d) at least one solvent.

Abstract: The invention relates to a highly flowable crosslinkable medical or dental composition comprising a crosslinkable compound, a polymerization initiator and a heterogeneous radiopacifier. Also described is a crosslinked polymer composition obtainable by crosslinking said highly flowable, crosslinkable medical or dental composition and the use of said highly flowable crosslinkable medical or dental composition to fill cavities or hollow structures in human or animal subjects.

Abstract: The invention relates to water soluble crosslinkable prepolymers for the preparation of chemically stable crosslinked polymer gels, a process for preparing the same, compositions containing the same and their use such as a medical or dental filler composition.

Abstract: A versatile, highly efficient process for the preparation of acylphosphines such as mono- and bisacylphosphines via reaction of phosphines (PH3 and higher homologues) or silylated phosphines with acylhalides in the presence of at least one lewis acid. Further a novel acyl phosphines obtainable by the process.

Abstract: A versatile, highly efficient process for the preparation of acylphosphines such as mono- and bisacylphosphines via reaction of phosphines (PH3 and higher homologues) or silylated phosphines with acylhalides in the presence of at least one lewis acid. Further a novel acyl phosphines obtainable by the process.