Provided is a block body that makes it possible to quickly produce a dental prosthesis with a good accuracy. A material of the block body including SiO.sub.2 in an amount of 60.0 mass % to 80.0 mass %, Li.sub.2O in an amount of 10.0 mass % to 20.0 mass %, Al.sub.2O.sub.3 in an amount of 5.1 mass % to 10.0 mass %, wherein the block body is formed in a column, and a main crystalline phase of the block body is lithium disilicate.

The present invention relates to a dental composition and a dental kit comprising a polymerisable adhesive free of a photoinitiator, and a self-cure composite restorative including a redox initiator system. The dental composition cures upon contact between the self-cure composite restorative and the adhesive, to thereby form a dental restoration. The present invention also relates to a method of applying the dental composition, and methods of replacing a dental amalgam with the dental composition, or dental kit, of the present invention.

The present invention relates to a dental composition and a dental kit comprising a polymerisable adhesive free of a photoinitiator, and a self-cure composite restorative including a redox initiator system. The dental composition cures upon contact between the self-cure composite restorative and the adhesive, to thereby form a dental restoration. The present invention also relates to a method of applying the dental composition, and methods of replacing a dental amalgam with the dental composition, or dental kit, of the present invention.

The invention relates to an implant or medical tool made of a metal or having a surface made of a metal for use in a therapeutic treatment, wherein the implant or the tool has, on its/the surface, a coating with polycrystalline doped electrically conductive diamond, wherein the therapeutic therapy is a treatment of a microbial infection of a human or animal body, wherein the implant or the tool is connected as anode (12) in an electrochemical system in the body, wherein the electrochemical system comprises, in addition to the anode (12), a cathode (16), a power source connected in an electrically conductive manner to the anode and to the cathode, and an electrolyte comprising or consisting of a body fluid, or consists of the anode (12), a cathode (16), a power source connected in an electrically conductive manner to the anode and to the cathode, and an electrolyte comprising or consisting of a body fluid, or wherein the implant or the tool is disposed within an electrical field, by means of which a negative charge is induced at a first site and a positive charge at a second site by induction on the implant or tool, by means of which the first site becomes the anode (12) in an electrochemical system and the second site becomes the cathode (16) in the electrochemical system, wherein the electrochemical system comprises, in addition to the implant or the tool, an electrolyte comprising or consisting of a body fluid or consists of the implant or the tool and an electrolyte comprising or consisting of a body fluid.

The invention relates to an implant or medical tool made of a metal or having a surface made of a metal for use in a therapeutic treatment, wherein the implant or the tool has, on its/the surface, a coating with polycrystalline doped electrically conductive diamond, wherein the therapeutic therapy is a treatment of a microbial infection of a human or animal body, wherein the implant or the tool is connected as anode (12) in an electrochemical system in the body, wherein the electrochemical system comprises, in addition to the anode (12), a cathode (16), a power source connected in an electrically conductive manner to the anode and to the cathode, and an electrolyte comprising or consisting of a body fluid, or consists of the anode (12), a cathode (16), a power source connected in an electrically conductive manner to the anode and to the cathode, and an electrolyte comprising or consisting of a body fluid, or wherein the implant or the tool is disposed within an electrical field, by means of which a negative charge is induced at a first site and a positive charge at a second site by induction on the implant or tool, by means of which the first site becomes the anode (12) in an electrochemical system and the second site becomes the cathode (16) in the electrochemical system, wherein the electrochemical system comprises, in addition to the implant or the tool, an electrolyte comprising or consisting of a body fluid or consists of the implant or the tool and an electrolyte comprising or consisting of a body fluid.

[Problem] To provide a photocurable composition having a high curing depth. [Solution] To provide a photocurable composition of the present disclosure comprises (A) polymerizable monomer, (B) photosensitizer, (C) photoacid generator, and (D) photopolymerization accelerator, wherein, the photocurable composition comprises (D-1) amine compound represented by formula (1) as the (D) photopolymerization accelerator. ##STR00001##
(In the formula (1), R.sub.1 is a substituent represented by formula (2), and R.sub.2 and R.sub.3 are substituents represented by formula (2) or substituents selected from —OH group, —O— group, —S— group, —NH—C(O)—NH— group, —C(O)—O— group, —OC(O)— group, —OC(O)—NH— group, —NH—C(O)—O— group, halogen, an organic group which may have an alkoxysilyl group, an aromatic ring which may have a substituent and an alicyclic heterocycle which may have a substituent. Further, R.sub.2 and R.sub.3 may be H when at least one or more R.sub.4s of the formula (2) are an aromatic ring, and R.sub.3 may be H when R.sub.2 is a substituent represented by the formula (2)).

[Problem] To provide a photocurable composition having a high curing depth. [Solution] To provide a photocurable composition of the present disclosure comprises (A) polymerizable monomer, (B) photosensitizer, (C) photoacid generator, and (D) photopolymerization accelerator, wherein, the photocurable composition comprises (D-1) amine compound represented by formula (1) as the (D) photopolymerization accelerator. ##STR00001##
(In the formula (1), R.sub.1 is a substituent represented by formula (2), and R.sub.2 and R.sub.3 are substituents represented by formula (2) or substituents selected from —OH group, —O— group, —S— group, —NH—C(O)—NH— group, —C(O)—O— group, —OC(O)— group, —OC(O)—NH— group, —NH—C(O)—O— group, halogen, an organic group which may have an alkoxysilyl group, an aromatic ring which may have a substituent and an alicyclic heterocycle which may have a substituent. Further, R.sub.2 and R.sub.3 may be H when at least one or more R.sub.4s of the formula (2) are an aromatic ring, and R.sub.3 may be H when R.sub.2 is a substituent represented by the formula (2)).

A biocompatible polymer hybrid nanocomposite coating on a surface of a substrate, such as titanium and its alloys. The coating can be achieved by an electrostatic spray coating, preferably using ultra-high molecular weight polyethylene (UHMWPE) as a matrix for the coating. For example, up to 2.95 wt. % carbon nanotubes can be used as reinforcement, as can up to 4.95 wt. % hydroxyapatite. A dispersion of CNTs and HA in the coating is substantially uniform. The tribological performance of such coatings include high hardness, improved scratch resistance, excellent wear resistance, and corrosion resistance compared to pure UHMWPE coatings.

Fibers, for example fiberglass fibers, are added to dental stone powders to provide for reinforced dental stones. Dental stones are made by combining dry components, including binder and fiber glass, adding water to the resulting mixture and setting the mixture in a dental mold. The dental stones are reinforced by the fibers, and allow for reduced breaking or chipping during handling.

Fibers, for example fiberglass fibers, are added to dental stone powders to provide for reinforced dental stones. Dental stones are made by combining dry components, including binder and fiber glass, adding water to the resulting mixture and setting the mixture in a dental mold. The dental stones are reinforced by the fibers, and allow for reduced breaking or chipping during handling.