Dental product with reduced extrusion forces

Abstract

The present invention relates to a dental product comprising: a packaging device comprising a compartment having a front end and a rear end, an inner surface, and an inner diameter; a layer of lubricant composition, the layer of lubricant composition being located on the inner surface of the compartment; a dental material located in the compartment between the leading end and the trailing end, the lubricant composition comprising a monomer ML having an ethylenically unsaturated group, and a filler FL in an amount of 0 wt% to 65 wt% relative to the weight of the lubricant composition, the dental material differing from the lubricant composition in its chemical composition.

Description

Technical Field

[0001] The present invention relates to a dental product comprising a packaging device comprising a compartment, preferably a tubular compartment, wherein the inner surface of the compartment comprises a layer of a lubricant composition, the layer of the lubricant composition comprising an ethylenically unsaturated monomer. The dental product also comprises a dental material, in particular a polymerizable dental material, located in the compartment.

[0002] Due to the presence of the lubricant composition, the force required to dispense the dental material from the packaging device may be reduced. Background Art

[0003] Dental materials, especially dental composites, are widely used to repair defective tooth structures in patients' mouths.

[0004] Dental materials generally contain a polymerizable (meth)acrylate component, a filler and an initiator system suitable for hardening the dental material by applying radiation.

[0005] In particular, dental composites often have high filler loadings, which are required to achieve adequate mechanical properties after hardening of the material.

[0006] High filler loadings generally result in high viscosity materials that require extensive storage prior to use to avoid undesired polymerization.

[0007] As suitable packaging devices, spiral tubes and so-called compules are generally proposed.

[0008] Both packaging devices allow the stored dental composite material to be extruded through a nozzle onto the tooth surface to be treated.

[0009] However, due to the high viscosity of dental composites, high extrusion forces are often required.

[0010] High extrusion forces can be achieved by using threads with appropriate pistons or by using suitable applicators.

[0011] Packaging devices for storing dental materials are described in various patent documents.

[0012] US 5,603,701 (Fischer) describes a syringe device for delivering a solid but pliable material such as a dental composite. The syringe device includes a non-threaded barrel member for containing the material. The non-threaded barrel member has an inlet end, an outlet end, and an enlarged finger grip at the inlet end. The syringe device also includes a member for slidably engaging the finger grip of the barrel member, the engaging member having a threaded through hole. The syringe device also includes a plunger member for moving through the barrel member.

[0013] US 4,863,072 (Perler) describes an apparatus for delivering a light-curable composite dental filling material, the apparatus comprising a tubular composite material reservoir, a plunger and a slider. The slider is free to move longitudinally along the reservoir but is fitted to a facet on the outer surface of the reservoir to prevent angular movement of the slider relative to the reservoir. The plunger consists of a shaft having threads to mate with the threaded inner diameter of the composite material reservoir.

[0014] US 11,351,009 B2 (Clark et al.) describes a capsule for use in a dental composite material dispenser, the capsule comprising a hollow body having a wall defining an interior space of the body, the body comprising a proximal end and a distal end having a dispensing orifice; a first composite resin positioned in the interior space of the body; and a second composite resin positioned in the interior space of the body, wherein the first composite resin has a first viscosity and the second composite resin has a second viscosity less than the first viscosity, wherein no barrier is positioned between the first composite resin and the second composite resin, wherein the second composite resin is configured to be extruded through the dispensing orifice before the first composite resin, and wherein the first composite resin and the second composite resin are in contact before the capsule is used in the dental composite material dispenser.

[0015] US 2022 / 023538 A1 (Boehm et al.) describes a syringe for storing and dispensing a first component and a second component of a material. The syringe has a first chamber for accommodating the first component and a second chamber for accommodating the second component. The syringe also has an empty blank chamber separating the first chamber and the second chamber from each other.

[0016] US 2016 / 296962 A1 (Maxa) describes a device for dispensing a composition, the device having a tip (72) comprising an internal tapered funnel portion (74); a hollow barrel (84) comprising an external tapered surface portion (86), an inner surface, an open front end and an open rear end opposite the front end; and a piston (16), wherein the external tapered surface portion of the barrel is aligned with and releasably engaged with the internal tapered funnel portion of the tip, and wherein the piston is in sliding engagement with the barrel.

[0017] Similarly, applicators for dispensing dental composite materials from packaging devices are also described in the patent literature.

[0018] US 6,790,037 B1 (Orecchia) describes a viscous material dispenser for applying viscous dental material from a small plastic container (capule), cartridge or capsule. The dispenser includes a locking mechanism mounted on a syringe-type dispenser to securely hold the small plastic container, cartridge or capsule in the syringe-type dispenser when applying the viscous material from the syringe-type dispenser.

[0019] US 10,016,257 B2 (Pauser) describes a pen-like dispenser for dispensing dental material having a handle and a cap attached for rotation relative to each other about a longitudinal axis of the dispenser and having a cartridge for holding dental material and a screw plunger for extruding the dental material from the cartridge by a screwing action.

[0020] In order to reduce the applied force, it is also recommended to heat the dental composite and thereby reduce the viscosity.

[0021] Devices and methods for heating dental composite materials are described, for example, in WO 2021 / 053408 A1 (3M), WO 2020 / 025485 A1 (Voco).

[0022] Furthermore, it has been observed that applying high forces to a high viscous dental composite may result in so-called "run-on" of the dental composite even after dispensing is complete, since the high viscous dental composite often causes the cartridge to expand in length and diameter during the extrusion process and requires adequate time to relax after the extrusion force has been applied by the screw / thread. Summary of the invention

[0023]

[0006] Therefore, there remains a general need to address one or more of the above-mentioned problems.

[0024] In particular, there is a need for a product and method that allows for easy extrusion or dispensing of, for example, highly viscous dental materials from a packaging device.

[0025] Ideally, components used to address this purpose should not adversely affect the performance and mechanical properties of the hardened dental material.

[0026] Furthermore, the "run-on problem" when dispensing high viscosity dental materials from the above packaging devices should also be addressed if possible.

[0027] Furthermore, the product should, if possible, be easy to produce and sufficiently shelf-stable.

[0028] In one embodiment, the invention features a dental product comprising:

[0029] a packaging device comprising a compartment having a front end and a rear end, an inner surface, and an inner diameter,

[0030] a layer of a lubricant composition, the layer of the lubricant composition being located on the inner surface of the compartment,

[0031] a dental material located in the compartment between the front end and the rear end,

[0032] The lubricant composition comprises

[0033] a monomer ML having an ethylenically unsaturated group, and

[0034] the filler FL in an amount of 0% to 65% by weight relative to the weight of the lubricant composition,

[0035] The dental material differs from the lubricant composition in its chemical composition.

[0036] In another embodiment, the present invention relates to a method for producing a dental product, in particular a dental product as described herein, comprising the following steps:

[0037] A packaging device, a dental material, and a lubricant composition are provided, the packaging device comprising a compartment having a front end and a rear end, an inner surface, and an inner diameter,

[0038] applying a layer of a lubricant composition to the inner surface of the compartment,

[0039] The compartment to which the layer of lubricant composition has been applied is filled with the dental material.

[0040] Another embodiment of the present invention relates to a method for dispensing dental material from a dental product described in the present text or a product obtainable by the method described in the present text, the method for dispensing comprising the step of applying a force in the range of 5N to 60N to the dental material located at the rear end of the compartment of the packaging device.

[0041] The present invention also relates to a kit, a dental product as described herein, an applicator for dispensing the dental material from the packaging device, and optionally one or more of the following: a dental adhesive; a dental primer; a dental cement; a dental curing light; instructions for use.

[0042] Furthermore, the invention features the use of a lubricant composition for reducing the extrusion force required to dispense a dental material from a packaging device comprising a compartment, the lubricant composition, the dental material, and the packaging device being described herein.

[0043] Unless defined differently, for the purpose of this specification, the following terms shall have the given meanings:

[0044] "Dental product" means a product intended for use in dental practice. Dental products typically contain dental materials stored in a packaging device prior to use.

[0045] "Dental material" means a material intended for use in dental practice. More specifically, dental materials include dental composites, dental cements, dental adhesives, dental crowns and bridge materials.

[0046] The dental material is typically a hardenable composition that can be hardened under ambient conditions, including a temperature range of 15°C to 50°C or 20°C to 40°C, within a time range of 30 minutes or 20 minutes or 10 minutes.

[0047] Higher temperatures are not recommended as they may cause pain to the patient and may be harmful to the patient's health.

[0048] Dental materials are typically provided to the practitioner in relatively small volumes, ie volumes in the range of 0.1 ml to 100 ml, or 0.5 ml to 50 ml, or 1 ml to 30 ml.

[0049] "Dental composite" means a material suitable for the production of dental restorations. Dental composites typically comprise (meth)acrylate monomers, fillers and an initiator system. Dental composites are typically formulated as one-component compositions.

[0050] "Dental restoration" means a dental article used to repair a tooth to be treated. Examples of dental restorations include crowns, bridges, inlays, onlays, veneers, facings, copings, crown-bridge frameworks, and parts thereof.

[0051] The term "compound" or "component" is a chemical substance having specific molecular characteristics or a chemical substance made from a mixture of such substances, such as a polymeric substance.

[0052] A "hardenable or curable or polymerizable component" is any component that can be cured or solidified by radiation-induced polymerization in the presence of a photoinitiator. The hardenable component may contain only one, two, three or more polymerizable groups. Typical examples of polymerizable groups include unsaturated carbon groups, such as vinyl groups, particularly present in (meth)acrylate groups.

[0053] As used herein, "(meth)acryloyl" is a shortened term that refers to "acryloyl" and / or "methacryloyl." For example, a "(meth)acryloyloxy" group is a shortened term that refers to an acryloyloxy group (i.e., CH2=CH-C(O)-O-) and / or a methacryloyloxy group (i.e., CH2=C(CH3)-C(O)-O-).

[0054] As used herein, "hardening" or "curing" a composition are used interchangeably and refer to a polymerization and / or cross-linking reaction involving one or more materials contained in the composition, including, for example, photopolymerization and chemical polymerization techniques (e.g., ionic reactions or chemical reactions that form free radicals effective to polymerize ethylenically unsaturated compounds).

[0055] An "initiator or initiator system" is a component or combination of components that is capable of initiating the curing process of a hardenable component.

[0056] "Particle" means a solid substance having a geometrically definable shape. The shape may be regular or irregular. Particles can often be analyzed with respect to, for example, particle size and particle size distribution.

[0057] "Nanosized filler" means a filler having an average particle size in the range of 5 nm to 50 nm.

[0058] "Environmental conditions" means the conditions to which the compositions described herein are typically subjected during storage and handling. Environmental conditions can be, for example, a pressure of 900 to 1,100 mbar, a temperature of 10°C to 40°C, and a relative humidity of 10% to 100%. In the laboratory, environmental conditions are typically adjusted to 20°C to 25°C and 1,000 to 1,025 mbar (at sea level).

[0059] As used herein, "a", "an", "the", "at least one", and "one or more" are used interchangeably. Also herein, numerical ranges recited by endpoints include all numbers subsumed within that range (e.g., 1 to 5 includes 1, 1.5, 2, 2.75, 3, 3.80, 4, 5, etc.).

[0060] Adding "plural" to a term means that the term shall include both the singular and the plural. For example, the term "additive" refers to one additive and multiple additives (e.g., 2, 3, 4, etc.).

[0061] Unless otherwise indicated, all numbers expressing quantities of ingredients, measurements of physical properties (such as described below), and so forth, used in the specification and claims are to be understood as being modified in all instances by the term "about."

[0062] The terms "comprises" or "comprising" and variations thereof do not have a limiting meaning when these terms appear in the specification and claims. "Consisting essentially of means that certain additional components may be present, i.e., those components that do not materially affect the basic characteristics of the article or composition. "Consisting of means that no additional components should be present. The term "comprising" shall also include the terms "consisting essentially of" and "consisting of."

[0063] If a composition does not contain a certain component as an essential feature, then the composition is "substantially or substantially free of" the component. Thus, the component itself is not intentionally added to the composition, or the component is not intentionally added to the composition together with other components or ingredients of other components. A composition that is substantially free of a certain component generally does not contain the component at all. However, sometimes the presence of a small amount of the component is unavoidable, for example due to impurities contained in the raw materials used. "Substantially free" generally means an amount of less than 1%, 0.5% or 0.1% by weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 is a schematic diagram of a packaging device used to test the extrusion behavior of dental materials.

[0065] Figure 2 A schematic sample of a packaging device for storing dental material according to the present invention is shown.

[0066] Figure 3 A schematic sample of a packaging device according to the invention containing a lubricant composition and a dental material is shown.

[0067] Figures 4 to 7 The composition of various commercially available dental materials is outlined. DETAILED DESCRIPTION

[0068] The dental products described herein have been found to have several advantageous properties.

[0069] It was found that the use of a lubricant layer on the inner surface of the tubular compartment of the packaging device results in a reduced friction between the dental material and the material of the packaging device and thus in a reduced force required to dispense the dental material from the packaging device.

[0070] If the lubricant composition comprises a (meth)acrylate monomer, a component that is generally compatible with the chemical composition of the dental material, the (meth)acrylate monomer can subsequently copolymerize with the dental material and thus does not adversely affect the overall properties of the hardened dental material.

[0071] This is advantageous compared to using, for example, silicone oil as lubricant, which may have a negative impact on the adhesion properties and other mechanical properties of the dental material during and after hardening.

[0072] Furthermore, it was found that the so-called "add-on problem" can be alleviated, since the force normally required to dispense the dental material from the packaging device can be reduced.

[0073] The dental product described in this text is also easy for the practitioner to handle, as he generally only needs to push the piston rod, which is a "one-handed application". This is beneficial compared to spiral tube packaging systems that require two hands during the extrusion process.

[0074] Thus, the dental material can be squeezed out of the packaging device more easily and quickly.

[0075] The packaging device is also easy to produce. Only a few components are required, such as a compartment, an optional plunger for sealing, and an optional nozzle for dispensing dental material from the packaging device.

[0076] Furthermore, since the extrusion forces have been reduced, the thickness of the walls of the compartments of the packaging device may also be reduced without the risk of the packaging device deforming during the extrusion process.

[0077] This is also beneficial from an environmental perspective, as less material is required to produce the packaging device. This can also reduce production costs.

[0078] The invention relates to a dental product containing a dental material.

[0079] Dental materials are usually provided to practitioners under sanitary conditions. During storage, dental materials are usually packaged in suitable packaging devices.

[0080] The dental product of the present invention comprises a packaging device having a compartment, in particular a tubular compartment.

[0081] The compartment includes a front end and a rear end and has inner and outer surfaces and an inner diameter.

[0082] The inner surface, the front end and the rear end define a volume of a compartment of the packaging device that is usable and accessible for storing dental material.

[0083] There is a layer of lubricant composition on the inner surface of the compartment.

[0084] The compartment has a front end and a rear end, an interior surface, and an interior diameter.

[0085] The length of the compartment substantially defines the volume of the packaging device which is available for receiving the dental material to be stored in the packaging device.

[0086] The volume of the compartment is typically in the range of 0.1 ml to 100 ml, or 0.5 ml to 50 ml, or 1 ml to 30 ml.

[0087] The inner diameter of the compartment is usually in the range of 2 mm to 25 mm. The outer diameter of the compartment is usually in the range of 4 mm to 30 mm. Therefore, the wall thickness of the compartment is usually in the range of 0.5 mm to 2 mm.

[0088] The ratio of the length to the inner diameter of the compartment is typically in the range of 25 / 1 to 3 / 1.

[0089] Such a ratio has been found to be useful because it provides a good balance between the diameter available to transmit forces to the dental material during the extrusion process and the handling of the dental product by the practitioner.

[0090] Preferably, the compartment has a tubular shape.

[0091] Generally, the packaging device may have the shape of a syringe having a tubular hollow barrel having a front end and a rear end opposite the front end.

[0092] In the compartment, in particular at the rear end of the compartment, a piston can be inserted, which is in sliding engagement with the inner surface of the compartment. That is, the piston can move in the compartment.

[0093] The piston also serves to seal the rear end of the compartment and to transmit pressure to the dental material during the extrusion or dispensing process.

[0094] The packaging device may further comprise a nozzle at a front end of the compartment through which the dental material may be dispensed.The nozzle may be releasably engageable or attached to the compartment.

[0095] The compartment may include a tapered funnel section at the front end.The tapered funnel section may include a tapered inner surface.

[0096] Examples of packaging devices that can be used are shown in Figures 1 to 3 middle.

[0097] exist Figure 1 , a packaging device used in the embodiment is shown. The packaging device comprises a compartment for storing dental material. A plunger with a tapered front end is partially inserted into the compartment. The length of this portion is 55 mm. At the left end of the compartment, the device comprises a plate for better handling of the device during the dispensing step.

[0098] and Figure 1 Compared to the packaging device shown, Figure 2 The packaging device shown has a nozzle at the front end. The nozzle has a conical shape.

[0099] Figure 3 Another embodiment of a dental article described herein is shown.

[0100] exist Figure 3 Here, (1) refers to the dental material stored in the compartment of the packaging device.

[0101] (2) refers to the lubricant composition being located on the inner wall of the compartment of the packaging device.

[0102] (3) refers to the housing of a packaging device, especially a compartment.

[0103] (4) Refers to a plunger or piston that can be inserted into a compartment and used to dispense a dental product.

[0104] The dental material can be dispensed from the compartment by moving the piston (4) in the direction of the front end of the packaging device. The piston can be moved manually or by means of an applicator or applicator designed to receive the dental product (eg, an applicator in the shape of a caulking gun).

[0105] A layer of the lubricant composition is located on the inner surface of the compartment of the packaging device.

[0106] Typically, the thickness of the layer of lubricant composition is in the range of 1 µm to 500 µm, or 2 µm to 300 µm.

[0107] If desired, the thickness of the layer can be determined microscopically by cutting the packaging device and examining the interface of the dental material and the inner wall of the compartment.

[0108] The lubricant composition comprises a monomer ML having ethylenically unsaturated groups and optionally a filler FL.

[0109] At 25°C for 10 s -1 At a shear rate of 1 Up to 10,000 , or 10 Up to 1,000 , or 20 Up to 800 In the range of Up to 1,000 , or 20 Up to 800 A range of is sometimes preferred.

[0110] Such a viscosity has been found to be useful as it facilitates coating the inner surface of the compartment of the packaging device during the production process.

[0111] The viscosity is low enough to achieve uniform coating, and high enough to reduce the risk of the lubricant composition dripping or running off the inner surface of the compartment of the packaging device.

[0112] The monomer ML typically has a molecular weight in the range of 130 g / mol to 1,200 g / mol, or 130 g / mol to 1,000 g / mol, or 130 g / mol to 800 g / mol, or 130 g / mol to 600 g / mol.

[0113] The lubricant composition comprises a (meth)acrylate monomer, ie, a component copolymerizable with other polymerizable components typically present in dental materials.

[0114] Suitable polymerizable components may be characterized by the formula:

[0115] A n BA m

[0116] wherein A is an ethylenically unsaturated group, such as a (meth)acryloyl moiety,

[0117] B is selected from (i) a linear or branched C1 to C2 optionally substituted with other functional groups (e.g., halogen (including Cl, Br, I), OH or a mixture thereof); 12 (ii) a C6 to C16 alkyl group optionally substituted with other functional groups (e.g., halogen, OH or mixtures thereof); 12 aryl, or (iii) an organic group having 4 to 20 carbon atoms bonded to one another via one or more ether, thioether, ester, thioester, thiocarbonyl, amide, carbamate, carbonyl and / or sulfonyl bonds,

[0118] m, n are independently selected from 0, 1, 2, 3, 4, 5 or 6, provided that n+m is greater than 0, ie, at least one A group is present.

[0119] Such polymerizable materials include mono-, di- or polyacrylates and methacrylates such as methyl acrylate, methyl methacrylate, ethyl (meth)acrylate, isopropyl (meth)acrylate, n-hexyl (meth)acrylate, stearyl (meth)acrylate, allyl (meth)acrylate, glycerol di(meth)acrylate, diurethane dimethacrylate known as UDMA which is a reaction product of 2-hydroxyethyl methacrylate (HEMA) and 2,2,4-trimethyl-hexamethylene diisocyanate (TMDI) (a mixture of isomers, e.g., Röhm Plex 6661-0), glycerol tri(meth)acrylate, ethylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, triethylene glycol di(meth)acrylate (TEGDMA), 1,3-propylene glycol diacrylate, 1,3-propylene glycol dimethacrylate, 1,6-hexanediol di(meth)acrylate, 1,10-decanediol di(meth)acrylate, 1,12-dodecanediol di(meth)acrylate, trimethylolpropane tri(meth)acrylate, 1,2,4-butanetriol tri(meth)acrylate, di(meth)acrylate The free radical polymerizable materials include 1,4-cyclohexanediol (meth)acrylate, pentaerythritol tri(meth)acrylate, pentaerythritol tetraacrylate, pentaerythritol tetramethacrylate, sorbitol hexa(meth)acrylate, bis[1-(2-(meth)acryloyloxy)]-p-ethoxy-phenyldimethylmethane and trihydroxy-ethyl-isocyanurate trimethacrylate; diacrylate and dimethacrylate of polyethylene glycol having a molecular weight of 200 to 500, and vinyl compounds such as styrene, divinyl succinate, divinyl adipate and divinyl phthalate. If desired, a mixture of two or more of these free radical polymerizable materials may be used.

[0120] Monomers containing hydroxyl moieties may also be added. Suitable compounds include 2-hydroxyethyl (meth)acrylate (HEMA), 2- or 3-hydroxypropyl (meth)acrylate, 4-hydroxybutyl (meth)acrylate, 5-hydroxypentyl (meth)acrylate, 6-hydroxyhexyl (meth)acrylate, 10-hydroxydecyl (meth)acrylate, dialkylene glycol mono(meth)acrylate (e.g., diethylene glycol mono(meth)acrylate, triethylene glycol mono(meth)acrylate, tetraethylene glycol mono(meth)acrylate, polyethylene glycol mono(meth)acrylate, dipropylene glycol mono(meth)acrylate, polypropylene glycol mono(meth)acrylate), and further, 1,2- or 1,3- and 2,3-dihydroxypropyl (meth)acrylate, 2-hydroxypropyl-1,3-di(meth)acrylate, 3-hydroxypropyl-1,2-di(meth)acrylate, N-(meth)acryloyl-1,2-dihydroxypropylamine, N-(meth)acryloyl-1,3-dihydroxypropylamine, an adduct of phenol and glycidyl (meth)acrylate (e.g., 1-phenoxy-2-hydroxypropyl (meth)acrylate), 1-naphthyloxy-2-hydroxypropyl (meth)acrylate, 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate and 2,3-dihydroxypropyl (meth)acrylate are particularly preferred. If desired, a mixture of one or more of these components may be used.

[0121] The lubricant composition typically comprises the following amount of monomer ML: at least: 5 wt% or 10 wt% or 20 wt%; at most: 100 wt% or 80 wt% or 65 wt%; range: 5 wt% to 100 wt%, or 10 wt% to 80 wt%, or 20 wt% to 65 wt%; wt% relative to the weight of the lubricant composition.

[0122] The lubricant composition may also contain a filler. One or more fillers may be present.

[0123] The addition of fillers may be beneficial, for example, to adjust rheological properties such as viscosity.

[0124] The size of the filler particles should be such that a homogeneous mixture with the hardenable components of the lubricant composition can be obtained.

[0125] The average particle size of the filler is usually in the range of 0.4µm to 10µm.

[0126] If desired, measurement of the particle size of the filler particles can be performed as described in the Examples section.

[0127] Useful fillers include fumed silica, fillers based on non-acid-reactive fluoroaluminosilicate glasses, quartz, ground glass, water-insoluble fluorides such as CaF2, silica gels such as silicic acid, especially fumed silicic acid and particles thereof, cristobalite, calcium silicate, zirconium silicate, zeolites, including molecular sieves.

[0128] Suitable fumed silicas include, for example, those sold under the trade name Aerosil ™ Products sold in the series OX-50, -130, -150 and -200 are available from Evonik's Aerosil ™ R8200, R805, CAB-O-SIL from CabotCorp (Tuscola) ™ M5, and HDK types from Wacker, such as HDK ™ -H2000, HDK ™ H15, HDK ™ H18, HDK ™ H20 and HDK ™ H30.

[0129] Fillers that may also be used include nano-sized fillers such as nano-sized silica or a mixture of nano-sized silica and zirconia particles. Suitable nano-sized particles typically have an average particle size in the range of 5 nm to 50 nm.

[0130] The preferred nano-sized silica is available under the trade name NALCO ™ Colloidal silica was purchased from Nalco Chemical Co. (Naperville, Ill.) (e.g., preferred silica particles can be obtained using NALCO ™ Products 1040, 1042, 1050, 1060, 2327 and 2329 are available from Nissan Chemical America Company, Houston, Texas (e.g., SNOWTEX-ZL, -OL, -O, -N, -C, -20L, -40 and -50); available from Admatechs Co., Ltd., Japan (e.g., SX009-MIE, SX009-MIF, SC1050-MJM and SC1050-MLV); available from Grace GmbH & Co. KG, Worms, Germany (e.g., available under the trade name LUDOX ™those available from Akzo Nobel Chemicals GmbH, Leverkusen, Germany (e.g., available under the trade name LEVASIL ™ 50 / 50%, 100 / 45%, 200 / 30%, 200A / 30%, 200 / 40%, 200A / 40%, 300 / 30% and 500 / 15%), and those available from Bayer MaterialScience AG, Leverkusen, Germany (e.g., available under the trade name DISPERCOLL ™ S obtained, such as 5005, 4510, 4020 and 3030).

[0131] Fillers that may also be used include prepolymeric fillers. Prepolymeric filler particles are typically prepared by mixing an inorganic filler with an organic polymerizable resin and curing the mixture.

[0132] If necessary, the filler is surface treated. Available surface treatment agents include silanes. Silane surface treatment agents generally contain a polymerizable portion, particularly a (meth)acrylate portion. Surface treatment makes it easier to disperse nano-sized filler particles in the monomer matrix and can prevent the filler from settling from the formulation during storage.

[0133] The lubricant composition may include filler in an amount of: at least: 0 wt % or 1 wt % or 5 wt %; at most: 65 wt % or 50 wt % or 40 wt %; range: 0 wt % to 65 wt %, or 1 wt % to 50 wt %, or 5 wt % to 40 wt %; wt % relative to the weight of the lubricant composition.

[0134] The lubricant composition may also contain an initiator. One or more initiators may be present.

[0135] Suitable initiators that may be present include photoinitiator systems and redox initiator systems.

[0136] Suitable photoinitiator systems typically contain a sensitizer comprising an alpha-alpha diketone moiety, an anthraquinone moiety, a thioxanthone moiety, or a benzoin moiety. Sensitizers containing an alpha-alpha diketone moiety are generally preferred.

[0137] A typical photoinitiator system comprises a combination of a sensitizer and a reducing agent or donor component, which is generally referred to as a photoinitiator system.

[0138] As the sensitizer, those which can polymerize the polymerizable monomer by the action of visible light having a wavelength of 390 nm to 830 nm are preferred.

[0139] Examples of the sensitizer include camphorquinone, benzil, diacetyl, benzyl dimethyl ketal, benzyl diethyl ketal, benzyl di(2-methoxyethyl) ketal, 4,4,'-dimethylbenzyl dimethyl ketal, anthraquinone, 1-chloroanthraquinone, 2-chloroanthraquinone, 1,2-benzanthraquinone, 1-hydroxyanthraquinone, 1-methylanthraquinone, 2-ethylanthraquinone, 1-bromoanthraquinone, thioxanthone, 2-isopropylthioxanthone, 2-nitrothioxanthone, 2-thioxanthone, 2-isopropylthioxanthone, 2-nitrothioxanthone, 2- Methylthioxanthone, 2,4-dimethylthioxanthone, 2,4-diethylthioxanthone, 2,4-diisopropylthioxanthone, 2-chloro-7-trifluoromethylthioxanthone, thioxanthone-10,10-dioxide, thioxanthone-10-oxide, benzoin methyl ether, benzoin ethyl ether, isopropyl ether, benzoin isobutyl ether, benzophenone, bis(4-dimethyl-amino-phenyl)ketone, 4,4,'-bisdiethylamino-benzophenone.

[0140] Alternatively, free radical initiators include acylphosphine oxides and bisacylphosphine oxides.

[0141] As the reducing agent or donor component, a tertiary amine is generally used. Suitable examples of tertiary amines include N,N-dimethyl-p-toluidine, N,N-dimethyl-aminoethyl methacrylate, triethanolamine, 4-dimethylaminobenzoic acid methyl ester, 4-dimethyl-aminobenzoic acid ethyl ester, methyldiphenylamine and 4-dimethylaminobenzoic acid isopentyl ester.

[0142] If a redox initiator system is present, the packaging device usually has two separate compartments for storing the dental material, which is then divided into a portion containing the oxidizing agent of the redox initiator system and a portion containing the reducing agent of the redox initiator system.

[0143] As the oxidizing agent, generally a peroxy component such as peroxide can be used.

[0144] Additionally, persulfate components, particularly water-soluble persulfate components, may be used.

[0145] Organic peroxides that may be used include diperoxides and hydroperoxides.

[0146] According to one embodiment, the organic peroxide is a diperoxide, preferably a diperoxide comprising the moiety R1-OO-R2-OO-R3, wherein R1 and R3 are independently selected from H, alkyl (e.g., C1 to C6), branched alkyl (e.g., C1 to C6), cycloalkyl (e.g., C5 to C6), 10 ), alkylaryl (e.g., C7 to C 12 ) or aryl (e.g., C6 to C10 ), and R2 is selected from an alkyl group (eg, C1 to C6) or a branched alkyl group (eg, C1 to C6).

[0147] Examples of suitable organic diperoxides include 2,2-di-(tert-butylperoxy)butane and 2,5-dimethyl-2,5-di-(tert-butylperoxy)hexane and mixtures thereof.

[0148] The organic peroxide may also be a hydroperoxide, in particular a hydroperoxide comprising the following moiety:

[0149] ROOH

[0150] Where R is (for example, C1 to C 20 ) alkyl, (e.g., C3 to C 20 ) branched alkyl, (e.g., C6 to C 12 ) cycloalkyl, (e.g., C7 to C 20 ), alkylaryl (e.g., C6 to C 12 ) or aryl (e.g., C6 to C 12 ).

[0151] Examples of suitable organic hydroperoxides include tert-butyl hydroperoxide, tert-amyl hydroperoxide, p-diisopropylbenzene hydroperoxide, cumene hydroperoxide, pinane hydroperoxide, p-methane hydroperoxide and 1,1,3,3-tetramethylbutyl hydroperoxide and mixtures thereof.

[0152] Examples of reducing agents include barbituric acid components or thiobarbituric acid components, especially the corresponding salts thereof.

[0153] Examples of suitable barbituric acid components or thiobarbituric acid components include barbituric acid, thiobarbituric acid, 1,3,5-trimethylbarbituric acid, 1-phenyl-5-benzylbarbituric acid, 1-benzyl-5-phenyl-barbituric acid, 1,3-dimethylbarbituric acid, 1,3-dimethyl-5-phenylbarbituric acid, 1-cyclohexyl-5-ethylbarbituric acid, 5-laurylbarbituric acid, 5-butyl-barbituric acid, 5-allylbarbituric acid, 5-phenylthiobarbituric acid, 1,3-dimethylthiobarbituric acid, triclobarbituric acid, 5-nitrobarbituric acid, 5-aminobarbituric acid, and 5-hydroxybarbituric acid.

[0154] Other reducing agents that may be used include aromatic sulfinates or thiourea components.

[0155] Suitable sulfinic acid components include benzenesulfinic acid, sodium benzenesulfinic acid, sodium benzenesulfinic acid dihydrate, sodium toluenesulfinic acid, formamidinesulfinic acid, sodium salt of hydroxymethanesulfinic acid, sodium salt of 2,5-dichlorobenzenesulfinic acid, 3-acetamido-4-methoxybenzenesulfinic acid, among which sodium toluenesulfinic acid or sodium benzenesulfinic acid and their hydrates are sometimes preferred.

[0156] In addition to those components, activators and / or transition metal components may be present in the redox initiator system.

[0157] Suitable activators include aromatic tertiary amines such as N,N-bis(hydroxyalkyl)-3,5-xylidine (e.g., as described in U.S. Pat. No. 3,541,068) and N,N-bis(hydroxyalkyl)-3,5-di-tert-butylaniline, particularly N,N-bis([β]-oxybutyl)-3,5-di-tert-butylaniline and N,N-bis(hydroxyalkyl)-3,4,5-trimethylaniline.

[0158] Suitable transition metal components include organic and / or inorganic salts of vanadium, chromium, manganese, iron, cobalt, nickel and / or copper, with copper, iron and vanadium sometimes being preferred.

[0159] The lubricant composition may contain the following amounts of initiator: at least: 0 wt % or 0.05 wt % or 0.1 wt %; at most: 6 wt % or 4 wt % or 2 wt %; range: 0 wt % to 6 wt %, or 0.05 wt % to 4 wt %, or 0.1 wt % to 2 wt %; wt % relative to the weight of the lubricant composition.

[0160] Dental products described herein also include dental materials.

[0161] The dental material is located in a compartment of the packaging device. The dental material is in contact with the lubricant composition. That is, the lubricant composition serves as an interface between the interior surface of the compartment and the dental material stored therein.

[0162] The lubricant layer surrounds the dental material in areas where the dental material would otherwise be in direct contact with the inner surface of the compartment of the packaging device.

[0163] Dental material differs from lubricant compositions in its chemical composition.

[0164] Dental materials generally contain one or more monomers MC having ethylenically unsaturated groups.

[0165] Monomer MC may be the same as or different from monomer ML.

[0166] If they are the same, they are used in different amounts.

[0167] The dental material typically comprises monomer MC in the following amounts: at least: 5 wt % or 10 wt % or 20 wt %; at most: 80 wt % or 70 wt % or 60 wt %; range: 5 wt % to 80 wt %, or 10 wt % to 70 wt %, or 20 wt % to 60 wt %; wt % relative to the weight of the lubricant composition.

[0168] The dental material further comprises a filler FC.

[0169] Filler FC may be the same as or different from filler FL which may be present in the lubricant composition.

[0170] Filler FC is typically present in the following amounts: at least: 20 wt% or 30 wt% or 40 wt%; at most: 85 wt% or 70 wt% or 65 wt%; range: 20 to 85 wt%, or 30 to 70 wt%, or 40 to 65 wt%; wt% relative to the weight of the dental material.

[0171] The dental material may also contain an initiator.

[0172] The initiator may be the same as or different from the initiator that may be present in the lubricant composition.

[0173] The dental product can be manufactured by a method comprising the following steps:

[0174] A packaging device, a dental material, and a lubricant composition are provided, the packaging device comprising a compartment having a front end and a rear end, an inner surface, and an inner diameter,

[0175] applying a layer of a lubricant composition to the inner surface of the compartment,

[0176] The compartment to which the layer of lubricant composition has been applied is filled with the dental material.

[0177] The lubricant composition may be applied by spraying or coating with a suitable coating device (eg, a sponge impregnated with the lubricant composition).

[0178] The invention also relates to a method for dispensing a dental material from a packaging device for a dental product.

[0179] The method for allocating comprises the following steps:

[0180] applying an extrusion force to the dental material at the rear end of the compartment of the packaging device,

[0181] The extrusion force is in the range of 0.1 N to 100 N, or in the range of 10 N to 60 N.

[0182] The applied force is generally within a range that can be provided by the practitioner without great effort and without the use of additional gadgets or special packaging devices such as a spiral tube.

[0183] The invention also relates to a kit box.

[0184] The kit includes a dental product as described herein, an applicator for dispensing the dental material from a packaging device, and optionally one or more of the following: a dental adhesive; a dental primer; a dental cement; a dental curing light; instructions for use.

[0185] A suitable applicator comprises at least a hand piece and a rod, optionally a rod and a gear.

[0186] Dental adhesives are generally of relatively low viscosity (e.g., 0.01 at 25°C). to 3 ). Dental adhesives interact directly with the enamel or dentin surface of the tooth. Dental adhesives are typically one-part compositions, are radiation curable, and contain an ethylenically unsaturated component having an acidic moiety, an ethylenically unsaturated component not having an acidic moiety, water, a sensitizer, a reducing agent, and additives.

[0187] Examples of dental adhesives are described in US 2020 / 0069532 A1 (Thalacker et al.) and US 2017 / 0065495 A1 (Eckert et al.). Dental adhesives are also commercially available, such as 3M ™ Scotchbond ™ Universal (3M Oral Care).

[0188] Suitable dental primers are described in US 6,126,922 (Rozzi et al.) and WO 00 / 69393 A1 (3M). Dental primers are also commercially available, for example from 3M ™ Transbond ™ XT Primer (3M OralCare).

[0189] Dental cements that can be added to the kit include, in particular, self-adhesive resin cements containing an acidic polymerizable component (e.g., a (meth)acrylate component having a phosphoric acid or carboxylic acid moiety), a polymerizable component not having an acidic moiety, an initiator system, and a filler.

[0190] Suitable dental cements are also commercially available, such as RelyX ™ Unicem 2, RelyX ™Universal or RelyX ™ Luting Plus (3M Oral Care Company).

[0191] Suitable dental curing lights are described in US 10,758,126 B2 (Geldmacher et al.) or US 10,231,810 B2 (Gramann et al.). Dental curing lights are also commercially available, for example from 3M ™ Elipar ™ S10 or 3M ™ Elipar ™ DeepCure S LED curing light (3M Oral Care).

[0192] The instructions for use describe how the dental product should be used in everyday practice, for example outlining the application steps and optional curing conditions.

[0193] The invention also relates to the use of a lubricant composition for reducing the extrusion force required for dispensing a dental material from a packaging device comprising a compartment, the lubricant composition, the dental material and the packaging device being as described herein.

[0194] Specific embodiments of the dental products described herein include the following:

[0195] Implementation 1

[0196] A dental product comprising

[0197] a packaging device comprising a compartment having a front end and a rear end, an inner surface, and an inner diameter,

[0198] a layer of a lubricant composition, the layer of the lubricant composition being located on the inner surface of the compartment,

[0199] a dental material located in the compartment between the front end and the rear end,

[0200] The lubricant composition comprises

[0201] a monomer ML having an ethylenically unsaturated group, and

[0202] the filler FL in an amount of 0% to 65% by weight relative to the weight of the lubricant composition,

[0203] The dental material contains

[0204] a monomer MC having an ethylenically unsaturated group, the monomer MC being different from the monomer ML,

[0205] The filler FC is present in an amount of 65% to 85% by weight relative to the weight of the dental material.

[0206] Implementation 2

[0207] A dental product comprising

[0208] a packaging device comprising a compartment having a front end and a rear end, an inner surface, and an inner diameter,

[0209] a layer of a lubricant composition, the layer of the lubricant composition being located on the inner surface of the compartment,

[0210] a dental material located in the compartment between the front end and the rear end,

[0211] The lubricant composition comprises

[0212] a monomer ML having an ethylenically unsaturated group, and

[0213] the filler FL in an amount of 0% to 65% by weight relative to the weight of the lubricant composition, and

[0214] At 25°C for 10 s -1 At a shear rate of 1 Up to 10,000 Viscosity in the range

[0215] The dental material contains

[0216] a monomer MC having an ethylenically unsaturated group, the monomer MC being different from the monomer ML,

[0217] The filler FC is present in an amount of 65% to 85% by weight relative to the weight of the dental material.

[0218] Implementation 3

[0219] A dental product comprising

[0220] a packaging device comprising a compartment having a front end and a rear end, an inner surface, and an inner diameter,

[0221] a layer of a lubricant composition, the layer of the lubricant composition being located on the inner surface of the compartment,

[0222] a dental material located in the compartment between the front end and the rear end,

[0223] The lubricant composition comprises

[0224] a monomer ML having an ethylenically unsaturated group, and

[0225] the filler FL in an amount of 10% to 65% by weight relative to the weight of the lubricant composition, and

[0226] At 25°C for 10 s -1 At a shear rate of 10 Up to 1,000 Viscosity in the range

[0227] The dental material contains

[0228] a monomer MC having an ethylenically unsaturated group, the monomer MC being different from the monomer ML,

[0229] filler FC in an amount of 65% to 85% by weight relative to the weight of the dental material,

[0230] the compartment of the packaging device

[0231] having a volume ranging from 1 ml to 100 ml,

[0232] The ratio of the length to the inner diameter of the compartment is in the range of 25 / 1 to 3 / 1.

[0233] The lubricant compositions described herein generally do not contain the following components, alone or in combination:

[0234] a) silicone oil in an amount exceeding 0.5 wt. % or 0.2 wt. % or 0.1 wt. %;

[0235] b) an acidic polymerizable component in an amount exceeding 1 wt % or 0.5 wt % or 0.2 wt %.

[0236] Therefore, the above components are usually not added arbitrarily and are substantially absent.

[0237] The entire disclosure of the patents, patent documents and publications cited herein are incorporated by reference as a whole, as if each was incorporated separately. Various modifications and changes to the present invention will be apparent to those skilled in the art without departing from the scope and spirit of the present invention. The above specifications, examples and data provide a description of the manufacture and use of the compositions of the present invention and the methods of the present invention. The present invention is not limited to the embodiments disclosed herein. It will be appreciated by those skilled in the art that many alternative embodiments of the present invention may be prepared without departing from the spirit and scope of the present invention.

[0238] The following examples are given to illustrate the present invention.

[0239] Example

[0240] Unless otherwise indicated, all parts and percentages are based on weight, all water is deionized water, and all molecular weights are weight average molecular weight (Mw). In addition, unless otherwise indicated, all experiments were conducted under ambient conditions (23°C).

[0241] method

[0242] Viscosity (for up to 100.000 Viscosity of the material)

[0243] If desired, viscosity can be measured with a Physica MCR 301 (Anton Paar Germany GmbH, Ostfildern-Scharnhausen, Germany). Flowable composites and monomers can be measured at 25.0°C with a 15 mm plate / plate system and a gap of 0.2 mm at a shear rate of 10 / s.

[0244] pH

[0245] If desired, the pH of the composition can be determined as follows: pH sensitive paper (Carl Ross ™ Company (Carl Roth ™ company). Wet a pH-sensitive paper strip. Place a small portion of the composition to be tested on the wetted pH-sensitive paper. After 5 seconds, determine the color change of the pH-sensitive paper.

[0246] Molecular weight (Mw)

[0247] If necessary, the average molecular weight Mw can be measured by HPLC (e.g., Perkin Elmer Series 200 with UV / VIS detector Shimadzu SPD20AV) using a suitable solvent or solvent mixture. The HPLC chromatogram obtained contains different peaks of chemically similar compounds. According to the area (area %) of the different peaks and taking into account the molecular mass of the corresponding substance, the mass % of the corresponding substance can be calculated.

[0248] Particle size distribution (applicable to non-nano sized particles)

[0249] If desired, the particle size distribution can be determined by light scattering, for example using the device Horiba (Horiba, JP). A light scattering particle size analyzer illuminates the sample with a laser and analyzes the intensity fluctuations of the light scattered from the particles at an angle of 173 degrees. The instrument can calculate the particle size using the photon correlation spectroscopy (PCS) method. PCS uses the fluctuating light intensity to measure the Brownian motion of particles in a liquid. The particle size is then calculated as the diameter of a sphere moving at the measured speed.

[0250] The intensity of light scattered by a particle is proportional to the sixth power of the particle size. The Z-average size or cumulative mean is the average value calculated from the intensity distribution and the calculation is based on the assumption that the particles are unimodal, monodisperse and spherical. The correlation function calculated from the fluctuating light intensity is the intensity distribution and its mean. The mean of the intensity distribution is calculated based on the assumption that the particles are spherical. The Z-average size and the intensity distribution mean are more sensitive to larger particles than to smaller particles.

[0251] The volume distribution gives the percentage of the total volume of particles that corresponds to particles in a given size range. The volume average size is the size of the particles corresponding to the mean of the volume distribution. Since the volume of a particle is proportional to the cube of the diameter, this distribution is less sensitive to larger particles than the Z-average size. Therefore, the volume average is usually a smaller value than the Z-average size. In the context of this document, the Z-average size is referred to as the "average particle size".

[0252] Particle size distribution (for nano-sized particles)

[0253] The measurement of nanoparticle size is preferably based on the TEM (Transmission Electron Microscopy) method, whereby the population is analyzed to obtain the average particle size. The preferred method for measuring particle size can be described as follows:

[0254] The approximately 80 nm thick sample was placed on a 200 mesh copper grid with a carbon stabilized polyvinyl acetate substrate (SPI Supplies-Structure Probe, Inc., West Chester, PA). Transmission electron micrographs (TEM) were taken at 200 KV using a JEOL 200CX (JEOL, Ltd., Akishima, Japan, and sold by JEOL USA, Inc.). The population size of approximately 50-100 particles can be measured and the average diameter determined.

[0255] Extrusion force

[0256] The extrusion force was measured with a universal testing machine from ZwickRoell: Zwick 010, load cell Xforce K, nominal force 10 kN, test speed 0.25 mm / s.

[0257] The sample to be tested (packaging device with lubricant composition and dental material) was placed vertically in the sample holder of the universal testing machine with the front outlet pointing downwards. The composite material was pressed out of the syringe under ambient conditions (23°C) using a bolt attached to the load cell of the testing machine at the top of the plunger of the syringe. In the process, the applied force was recorded.

[0258] Material

[0259]

[0260] Table 1

[0261] Included in 3M ™ Filtek ™ The components in Universal are listed in Section 3 of the Material Data Sheet ( Figure 4 ). Included in 3M ™ Filtek ™ The components of Supreme Flowable are listed in Section 3 of the Material Data Sheet ( Figure 5 ). Included in 3M ™ Filtek ™ The components of Bulk Fill Flowable are listed in Section 3 of the Material Data Sheet ( Figure 6 ). Included in GC G-aenial ™ The components in the Universal Injectable are listed in Section 3 of the Material Data Sheet ( Figure 7 ).

[0262] Test Setup

[0263] The tubular packaging device used for the test is shown in Figure 1 middle.

[0264] The dimensions of the packaging device are as follows: length (L): 5.5 cm; inner diameter (ID): 6.4 mm; outer diameter (OD): 7.7 mm. The packaging device is made of polypropylene.

[0265] The inner surface of the tubular packaging device was coated with the lubricant composition using a cotton swab. Approximately 0.10 g of material was used. The thickness of the coating ranged from 1 µm to 200 µm.

[0266] The dental composite 3MFU was then filled into the packaging device by squeezing it from its original threaded cartridge (syringe) into the rear end of the new packaging using a universal testing machine (Zwick 010, Roell).

[0267] The packaging device is sealed with a plunger and the extrusion force (F max ) and stored at room temperature for 1 day before use (Table 2).

[0268]

[0269] Table 2; standard deviations (SD) are given in brackets

[0270] As can be seen from the results shown in Table 2, the extrusion force for pressing the dental material contained in the packaging device onto the inner surface to which the lubricant composition according to the present invention has been applied is reduced compared to the case where the lubricant composition according to the present invention has not been applied. This was also confirmed for the case where the dental material was stored at 50° C. for 14 days to simulate the cut-off storage condition.

[0271] Since the lubricant composition comprises components normally present in dental materials and optional filling materials, the components or the lubricant composition have no negative impact on the properties of the dental material stored in the packaging device.

Claims

1. A dental product, comprising: a packaging device comprising a compartment having a front end and a rear end, an inner surface, and an inner diameter, a layer of a lubricant composition, said layer of lubricant composition being located on said inner surface of said compartment, a dental material located in the compartment between the front end and the rear end, The lubricant composition comprises a monomer ML having ethylenically unsaturated groups, preferably (meth)acrylate groups, and a filler FL in an amount of 0% to 65% by weight, relative to the weight of the lubricant composition, The dental material differs from the lubricant composition in its chemical composition.

2. The dental product according to the preceding claim, said dental material comprising: a monomer MC having an ethylenically unsaturated group, and The filler FC is present in an amount of 65% to 85% by weight relative to the weight of the dental material.

3. The dental product according to any one of the preceding claims, wherein the lubricant composition is -1 At a shear rate of 1 Up to 10,000 Viscosity within the range.

4. Dental product according to any of the preceding claims, the monomer ML having a molecular weight Mw in the range of 130 g / mol to 1,200 g / mol.

5. The dental product according to any one of the preceding claims, the monomer ML being characterized by the following formula: IN n NOT m wherein A is an ethylenically unsaturated group, B is selected from (i) a linear or branched C1 to C2 optionally substituted by a functional group selected from Cl, Br, I, OH 12 (ii) a C6 to C6 alkyl group optionally substituted by a functional group selected from Cl, Br, I, OH 12 aryl, or (iii) an organic group having 4 to 20 carbon atoms bonded to one another via one or more ether, thioether, ester, thioester, thiocarbonyl, amide, carbamate, carbonyl and / or sulfonyl bonds, m and n are independently selected from 0, 1, 2, 3, 4, 5 or 6, The condition is that n+m is greater than 0.

6. The dental product according to any of the preceding claims, the monomer MC being different from the monomer ML.

7. The dental product according to any of the preceding claims, filler FL and filler FC being the same or different and comprising nano-sized fillers.

8. The dental product according to any one of the preceding claims, the lubricant composition and the dental material further comprising an initiator system.

9. The dental product according to any one of the preceding claims, wherein the lubricant composition does not comprise the following components, either alone or in combination: Silicone oil in an amount exceeding 0.5% by weight; An acidic polymerizable component in an amount exceeding 1% by weight.

10. The dental product according to any one of the preceding claims, the packaging device further comprising at least one of the following: a nozzle located at the front end of the compartment; A movable piston is located within the compartment.

11. The dental product according to any of the preceding claims, the packaging device being characterized by the following features alone or in combination: The compartment has a volume of 0.1 ml to 100 ml; The ratio of the length to the inner diameter of the compartment is in the range of 25 / 1 to 3 / 1.

12. A method for producing a dental product, in particular a dental product according to any one of the preceding claims, comprising the following steps: Providing a packaging device, a dental material, and a lubricant composition, the packaging device comprising a compartment having a front end and a rear end, an inner surface, and an inner diameter; applying a layer of a lubricant composition to the interior surface of the compartment; The compartments to which the layer of lubricant composition has been applied are filled with the dental material.

13. A method for dispensing the dental material from a dental product according to any one of claims 1 to 11 or a product obtainable by a method according to claim 12, the method for dispensing comprising the step of applying a force to the dental material located at the rear end of the compartment of the packaging device, the force being in the range of 5N to 60N.

14. A kit box, comprising: The dental product according to any one of claims 1 to 11; an applicator for dispensing the dental material from the packaging device; and Optionally one or more of the following: dental adhesive; dental primer; dental cement; dental curing light; instructions for use.

15. Use of a lubricant composition for reducing the extrusion force required to dispense a dental material from a packaging device comprising a compartment, the lubricant composition, the dental material and the packaging device being as described in any one of claims 1 to 11.

Images