Abstract: A composition containing a plurality of self-assembled nanostructures formed of a plurality of aromatic molecules which include an aromatic amino acid, and which exhibits an antibacterial activity is provided. The composition can be a dental composition which further comprises a dental formulation such as a curable dental formulation, for forming dental composite materials such as dental restorative composite materials. Processes of preparing the composition and uses thereof are also provided.

Abstract: The tissue holding device of the present invention is composed of at least two, substantially hollow, adjustable suction clamps, configured for one-sided clamping, that detachably adhere to the surface of the tissue by way of at least one suction opening in each suction clamp. The suction clamps are mechanically associated by a displacement mechanism. When the suction clamps are drawn toward each other the underlying adherent tissue margins are drawn toward each other. The tissue holding device holds the tissues during a bonding procedure, or the application of tissue bonding material or any other suitable substance to the adjacent tissue margins. When the application process is finished, the suction clamps may be easily removed by releasing the suction force (i.e. negative pressure). The tissue holding device may be used to bring two tissue surfaces together, such as during surgery and for the purpose of wound repair.

Abstract: According to the present invention there is provided an instrument for measuring the tightness between a first and a second contiguous bodies, the first body being movable with relation to the second body, comprising: (a) a substantially incompressible insertion element of predetermined thickness for insertion between the first and second bodies; (b) a holder for holding the insertion element to enable the insertion element to be forcibly inserted between the first and second bodies, thereby displacing the first body with relation to the second body, thereby providing a predetermined forced distance between the first and second bodies; and (c) a sensor for sensing the insertion force applied when inserting the insertion element between the first and second bodies along a predetermined path of insertion.