Abstract:
Disclosed herein are curable glass ionomer compositions that include a first paste and a second paste, and methods for using the disclosed compositions. The first paste includes water, a polyacid, and a non acid-reactive filler. The second paste includes water, an acid-reactive filler; and non-aggregated, water-miscible, nano-sized silica particles having at least 25% surface coverage of the particles with a silane. The composition is essentially free of a resin. In some embodiments, the water content of the first paste and the second paste of the paste/paste GI composition disclosed herein is less than 20% by weight, based on the total weight of the composition.
Abstract:
The application relates to a kit of parts for preparing a glass ionomer composition for dental use, the kit comprising a Paste A and a Paste B, Paste A comprising water, acid-reactive inorganic filler C, non acid-reactive filler A, Paste B comprising water, polyacid, complexing agent, non acid-reactive filler B, the mean particle size of non acid-reactive filler B being larger than the mean particle size of non acid-reactive filler A, the water content of the composition obtained when mixing Paste A and Paste B being below 20 wt.-%. The application also relates to a device for storing such a kit of parts and the use of the kit of parts and/or the device for preparing a dental cement, dental filling material, dental core build up material or dental root channel filling material.
Abstract:
The invention relates to a porous dental milling block comprising at least two geometrically defined Material Sections A and B, Material Section A comprising a tetragonal zirconia crystal phase in an amount A-T in % and a cubic zirconia crystal phase in an amount A-C in %, Material Section B comprising cubic zirconia crystal phase in an amount B-T in % and cubic zirconia crystal phase in an amount B-C in %, wherein (amount of tetragonal phase A-T in %)/(amount of cubic phase content A-C in %)>1 and (amount of tetragonal phase content B-T in %)/(amount of cubic phase content B-C in %)
Abstract:
A dental coloring stamp has a transfer pad for transferring a dental coloring solution to a precursor of a dental restoration. The transfer pad is at least partially formed of an open-celled elastic sponge and has a free transfer surface. The cross-section of the transfer pad is greater than a circular area of 10 mm in diameter so that a side of a dental restoration precursor can be stamped and thus colored. The invention helps facilitating the coloring of dental restorations.
Abstract:
The invention relates to a process for selectively treating parts of the surface of a porous dental zirconia article, the process comprising the steps of providing a liquid composition and a porous 3-dimensional dental zirconia article having an outer and inner surface, applying the liquid composition to only a part the outer surface and/or inner surface of the porous dental zirconia article, the liquid composition comprising a whitening agent comprising a phosphorous containing component, the phosphorous containing component comprising a phosphate, phosphone or phosphine moiety, with the proviso that at least one P—O unit of the phosphate, phosphone or phosphine moiety is dissociable or able to otherwise interact with zirconia. The invention also relates to a dental zirconia article obtainable or obtained by such a process and a kit of parts comprising a container containing a certain liquid composition.
Abstract:
The invention relates to a coloured zirconia ceramic dental mill blank having fluorescing properties, processes of production such a mill blank and uses thereof, in particular for producing zirconia ceramic dental restorations. The dental mill blank having a shape allowing the dental mill blank to be attached or fixed to a machining device, the dental mill blank comprising a porous zirconia material, the porous zirconia material comprising the oxides Zr oxide calculated as Zr02: from about 80 to about 97 wt.-%, Al oxide calculated as Al203: from about 0 to about 0.15 wt.-%, Y oxide calculated as Y203: from about 1 to about 10 wt-%, Bi oxide calculated as Bi203: from about 0.01 to about 0.20 wt-%, Tb oxide calculated as Tb203: from about 0.01 to about 0.8 wt.-%, and optionally one or two of the following oxides: Er oxide calculated as Er203: from about 0.01 to about 3.0 wt.-%, Mn oxide calculated as Mn02: from about 0.0001 to about 0.08 wt.-%, the porous zirconia material not comprising Fe oxide calculated as Fe203 in an amount of more than about 0.01 wt.-%, wt.-% with respect to the weight of the porous zirconia material.
Abstract translation:本发明涉及一种具有荧光特性的着色氧化锆陶瓷牙科磨机坯料,生产这种研磨坯料的方法及其用途,特别是用于生产氧化锆陶瓷牙科修复体。 将具有允许牙科磨料坯料的形状附着或固定在加工装置上的牙科磨料坯料,所述牙科磨料坯料包含多孔氧化锆材料,所述多孔氧化锆材料包含以ZrO 2计算的氧化物Zr氧化物:约80至约 97重量%,以Al 2 O 3计算的Al氧化物:约0至约0.15重量%,以Y 2 O 3计算的Y氧化物:约1至约10重量%,以Bi 2 O 3计算的Bi氧化物:约0.01至约 0.20重量%,以Tb 2 O 3计算的Tb氧化物:约0.01至约0.8重量%,以及任选的一种或两种以下氧化物:以Er 2 O 3计算的Er氧化物:约0.01至约3.0重量%,Mn 氧化物计算为MnO 2:约0.0001至约0.08重量%,不包含Fe氧化物的多孔氧化锆材料以Fe 2 O 3计,其量相对于重量的大于约0.01重量%,重量百分比 多孔氧化锆材料。
Abstract:
A method of making a customized dental blank comprises the steps of providing individual tooth color information, forming an open-celled dental blank precursor, providing the open-celled dental blank precursor with color in accordance with the individual tooth color information, and compressing the dental blank precursor. The method helps maximizing the optical quality of dental restoration at minimized costs.
Abstract:
The invention relates to a process of treating parts of the surface of a porous dental ceramic article comprising the steps of: a) providing a composition and a porous dental ceramic article having an outer surface, b) applying the composition to only a part of the outer surface of the porous dental ceramic article, c) optionally drying the porous dental ceramic article, and d) optionally firing the porous dental ceramic article, the composition comprising: a liquid being miscible with water, but not being water, a whitening agent comprising nano-sized metal oxide particles, metal ion containing components or mixtures thereof, a stabilizer (e.g. acid, base, complexing agent or mixture thereof). the porous dental ceramic article showing a N2 adsorption and/or desorption of isotherm type IV according to IUPAC classification. The invention also relates to a dental ceramic article obtainable by a process.