Abstract: A hardenable (e.g. dental) compositions is described comprising an encapsulated material. The encapsulated material comprises a basic core material and an inorganic shell material having certain viscosity criteria. Also described are dispensing devices and kits are described comprising a hardenable (e.g. dental) composition comprising a liquid material and an encapsulated material wherein the encapsulated material comprises a basic core material and an inorganic shell material comprising a metal oxide surrounding the core. The dispensing devices and kits can facilitate the methods of applying the hardenable composition. The hardenable or hardened (e.g. cured) composition can provide various technical effects such as a delayed release of a basic core material, a delayed increase in basicity, promoting remineralization of a tooth or bone structure, and increasing the average alkaline phosphatase (ALP) activity of pulp cells. In some embodiments, the composition is a dental (e.g.

Abstract: The present disclosure provides an additive manufactured article including a first portion and a second portion integral to the first portion. The second portion includes a coupling configured to engage a tool, as well as a frangible section at a connection point to the first portion. Further, a method of making the article is provided, including obtaining a photopolymerizable material and selectively curing the photopolymerizable material to form the article. Another method is provided, including obtaining a digital three-dimensional model of a patient's dental anatomy comprising a tooth in need of restoration and computing a digital three-dimensional model of a dental restoration to fit within the patient's dental anatomy, including determining a shape of the dental restoration. Optionally, the patient's dental anatomy may be prepared for a dental restoration prior to obtaining the digital three-dimensional model.

Abstract: Disclosed are of the protected photoinitiators of the formula: wherein Aryl1 is an aromatic or heteroaromatic ring; Aryl2 is an aromatic ring; each R1 is an alkyl, an aryl, an electron donating group or an electron withdrawing group, and subscript a is 0 to 3; each R2 is an alkyl, an aryl, an electron donating group or an electron withdrawing group, and subscript b is 0 to 3; Prot is a protected carbonyl group.

Abstract: Disclosed herein are non-aqueous compositions including: a flowable Part A including at least one resin and Reactant A; and a flowable Part B including at least one resin and Reactant B; wherein at least one of flowable Part A and flowable Part B further includes a free radically polymerizable resin; wherein at least one of flowable Part A and flowable Part B further includes a free radical initiator system; wherein flowable Part A and flowable Part B are capable of being mixed to provide a flowable mixed composition; wherein when flowable Part A and flowable Part B are mixed, Reactant A and Reactant B are capable of interacting to cause a non-free radical reaction within a first staging time to provide a first staged stable consistency for the mixed composition; wherein Reactant A comprises an acid and Reactant B comprises a base, and upon mixing flowable Part A and flowable Part B, the Reactant A acid is capable of reacting with the Reactant B base in an ionic acid-base reaction; and wherein the mixed compo

Abstract: The present disclosure provides an inorganic dental filler including a surface treated with at least one silane. Exemplary silanes described in the present disclosure for the surface treatment of the inorganic filler include silanes of Formula I and/or Formula II: (RSi)—(CR1R2)n—(NH—C(O)—O—CH2—CH2)q—N(R5)—C(O)—NH—(CH2—CH2—O)t—CR3R4—CH2-(A) Formula I (RSi)—(CR1R2)n—NH—C(O)—O—CR3R4-(L)q-CH2-(A) Formula II, wherein: RSi is a silane-containing group of the formula —Si(Yp)(R6)3-p, wherein Y is a hydrolysable group, R6 is a monovalent alkyl or aryl group, and p is 1, 2, or 3. Methods of making and using the surface treated inorganic dental fillers are also disclosed.

Abstract: The disclosure relates to compositions, methods of applying such compositions, and methods for curing such compositions to a depth of cure of up to about 30 mm within about 0.5 second to about two minutes per light exposure area.

Abstract: Disclosed are of the protected photoinitiators of the formula: wherein Aryl1 is an aromatic or heteroaromatic ring; Aryl2 is an aromatic ring; each R1 is an alkyl, an aryl, an electron donating group or an electron withdrawing group, and subscript a is 0 to 3; each R2 is an alkyl, an aryl, an electron donating group or an electron withdrawing group, and subscript b is 0 to 3; Prot is a protected carbonyl group.

Abstract: Dental compositions and methods of formulating a dental composition are described. In one embodiment, the dental composition comprises a polymerizable resin comprising one or more ethylenically unsaturated monomers or oligomers and nano-particles. The nanoparticles have a refractive index of at least 1.600 and an average discrete or aggregate particle size of no greater than 100 nm. The dental composition further comprises inorganic metal oxide filler having a discrete or aggregate average particle size of at least 200 nm. The nanoparticles are present at a concentration to provide a refractive index differential between the cured polymerizable resin and inorganic metal oxide filler such that the contrast ratio of the dental composition is at least 40.