An inorganic-organic composite medical material includes a two-phase co-continuous structure of an inorganic substance having open pores and an organic polymer filling the open pores, wherein the open pores have an average pore diameter of 1 nm or more and 100 nm or less, and the inorganic substance has a specific surface area of 100 m.sup.2/g or less.

Provided herein are methods for the controlled, independent modification of the surface of titanium-based materials and compositions generated thereby. The methods allow for the alteration of multiple surface characteristics including generation of precise nanostructures, morphology, crystallography and chemical composition for increased biocompatibility, for example, osseointegration, osseoconduction, cell adhesion, cell proliferation, mechanical properties (e.g. elasticity, modulus, surface texture, porosity), hydrophobicity, hydrophilicity, steric hindrance, anti-inflammatory properties and/or anti-bacterial properties.

To provide a zirconia perfect sintered body which has a chroma of an excellent color tone and excellent translucency as compared with a zirconia mill blank for dental cutting and machining prepared from a zirconia raw material powder containing various stabilizing materials while maintaining high strength, and does not cause deformation. The zirconia mill blank of the present invention is a semi-fired zirconia mill blank for dental cutting and machining containing a semi-fired body of a ceramic particle, the zirconia mill blank for dental cutting and machining contains zirconium oxide, a stabilizing material consisting of an oxide, and a water-soluble compound salt which contains at least one element selected from calcium, magnesium and a rare earth element and is not an oxide, the content of the stabilizing material in terms of the oxide in the semi-fired body of the ceramic particle is within a range of 2 to 7 mol %, and the content of the water-soluble compound salt in the zirconia mill blank for dental cutting and machining is within a range of 0.1 to 3.5 mol %.

The present invention relates to particles comprising a core, in particular a magnetic core, and a first coating of a first shell material, wherein a second coating of a second shell material is applied to the surface of the first coating facing away from the core, the second shell material is different from the first shell material and has a higher refractive index than the first shell material.

A dental prosthesis and a process for design and manufacturing, incorporating a dental implant framework and veneering overlay that will be designed and manufactured simultaneously and permanently fixated to one another.

Provided is a photocurable composition that contains a polymerizable monomer (A), a spherical filler (B) having an average particle size within the range of 230-1000 nm, and a polymerization initiator (C), the photocurable composition being such that: 90% or more of the individual particles that constitute the spherical filler (B) are within a range of 5% of the average particle size; the polymerizable monomer (A) and the spherical filler (B) satisfy condition (X1) represented by formula (1): nP<nF (where nP represents the refractive index at 25 C. of a polymer obtained by polymerizing the polymerizable monomer (A) and nF represents the refractive index at 25 C. of the spherical filler (B)); and the polymerization initiator (C) includes a photosensitizing compound (C1), a tertiary amine compound (C2), and a photoacid generator (C3).

A dental adhesive agent includes a polymerizable monomer; first and second inorganic particles which have been subjected to a surface treatment by a chemical compound, respectively; and a third inorganic particle. The first inorganic particle has a volume median diameter greater than or equal to 0.1 m and less than or equal to 0.5 m, the second inorganic particle has a volume median diameter greater than or equal to 0.6 m and less than or equal to 0.9 m, and the third inorganic particle has a mean primary-particle diameter greater than or equal to 5 nm and less than or equal to 50 nm. The mass ratio of the third inorganic particle with respect to the gross mass of the first inorganic particle, the second inorganic particle and the third inorganic particle is greater than or equal to 0.001 and less than or equal to 0.05.

The present disclosure provides a dental implant configured to be inserted in a hole in jaw bone and to be at least partially situated in the bone tissue when implanted and includes: a coronal region, an apical region, a longitudinal axis extending from the coronal region of the dental implant to the apical region of the dental implant; an implant surface configured to form an interface between an implant material and the oral environment/surrounding tissue and a surface layer formed on at least part of the implant surface, the surface layer including crystalline titanium oxide in the anatase phase and wherein the surface area roughness Sa and the pore size of the implant surface on which said surface layer is formed increase from the coronal region toward the apical region of the dental implant along the longitudinal axis.

The present disclosure provides a dental implant configured to be inserted in a hole in jaw bone and to be at least partially situated in the bone tissue when implanted and includes: a coronal region, an apical region, a longitudinal axis extending from the coronal region of the dental implant to the apical region of the dental implant; an implant surface configured to form an interface between an implant material and the oral environment/surrounding tissue and a surface layer formed on at least part of the implant surface, the surface layer including crystalline titanium oxide in the anatase phase and wherein the surface area roughness Sa and the pore size of the implant surface on which said surface layer is formed increase from the coronal region toward the apical region of the dental implant along the longitudinal axis.

Dental crowns and methods of making the same. The dental crown may include a metal shell shaped to cover a portion of a tooth of a patient; a coating retention metal layer diffusion bonded to the metal shell, wherein an interface between the coating retention layer and the metal shell comprises a plurality of interstitial regions; and a composition on the coating retention layer and within the plurality of the interstitial regions to bond the coating composition to the metal shell.