WO2014148293A1 - 歯科用充填修復材料キット - Google Patents
歯科用充填修復材料キット Download PDFInfo
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- WO2014148293A1 WO2014148293A1 PCT/JP2014/056164 JP2014056164W WO2014148293A1 WO 2014148293 A1 WO2014148293 A1 WO 2014148293A1 JP 2014056164 W JP2014056164 W JP 2014056164W WO 2014148293 A1 WO2014148293 A1 WO 2014148293A1
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- polymerizable composition
- dentin
- restoration
- enamel
- restoration material
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/15—Compositions characterised by their physical properties
- A61K6/16—Refractive index
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
- A61K6/887—Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
Definitions
- the present invention relates to a dental filling / restoration material kit.
- Tooth restoration using dental restoration materials 1) A cavity is formed by cutting a tooth damaged by caries or the like (hereinafter also referred to as “restoration tooth”).
- Tooth restoration requires good aesthetics in addition to operability and mechanical strength.
- Natural teeth consist of dentin and enamel, most of which are derived from dentin and are observed through transparent enamel.
- enamel increases from the tooth neck to the cut end, and the color tone (at least one element selected from hue, saturation, and lightness) differs at each site.
- the cervical part is opaque because the dentin layer is thick, and the lightness (color shading) and saturation (color vividness) are higher than the cut edge part.
- the cut edge is highly transparent because the dentin layer is thin and almost enamel. In this way, the color tone of the tooth varies depending on the part.
- Non-patent Document 1 In order to obtain high aesthetics in the restoration of teeth, a plurality of types of polymerizable compositions having different color tones are prepared. From these, the actual restoration tooth and its adjacent teeth (hereinafter referred to as “the surroundings of the restoration tooth”). It is important to select and use the one that best matches the color tone (Non-patent Document 1).
- This color tone is selected by a dentist using a shade guide (color sample) in which each cured product sample of the prepared polymerizable composition is collected, and the color tone and restoration that is confirmed by looking into the oral cavity. This is done by comparing the color tone around the teeth and selecting the one that feels the closest.
- the restoration tooth is lightly damaged and the cavity is shallow, it is difficult to achieve the color matching by filling with a single type of polymerizable composition. That is, when the cavity is deep (for example, a class IV cavity), the color tone of the tooth is not only the color tone of the tooth surface part (enamel part) but also the color tone of the deep layer part (dentin part) that can be seen through. The scene is rich in gradation. For this reason, the subtle color tone is reproduced by changing the color tone of the polymerizable composition to be filled and laminating and filling at every certain depth.
- Patent Document 2 adjusts the refractive index of dentin restoration material and enamel restoration material equally.
- the enamel restoration material is adjusted to have a high refractive index in order to reproduce the optical characteristics of natural teeth.
- the background color in the oral cavity when the enamel restoration material is laminated on the dentin restoration material while improving the color tone compatibility with natural teeth It is necessary to prevent darkening due to the influence of.
- the enamel restoration material is affected by the background color and looks dark, so that there is a problem that the aesthetics are lowered, or when it looks dark, the structure specific to dentin becomes difficult to see, resulting in a decline in aesthetics.
- a mamelon is an internal structure comprised by the dentine seen in a cut end part, and is seen as a finger-like structure. A jagged shape of the cut end side of the dentin layer is confirmed through the surface enamel.
- a plurality of types of polymerizable compositions having different color tones within a limited thickness of 2 mm or less for example, a polymerizable composition for dentin restoration material. It is necessary to fill a total of four kinds of polymerizable compositions (two kinds and two kinds of polymerizable compositions for enamel restoration material), and a high technique regarding filling is required for the surgeon.
- the dentin restoration material and the enamel restoration material must each have a certain range of color tone.
- the contrast ratio which is an element of the color tone, is adjusted to be high (opaque) for the dentin restoration material and low (transparent) for the enamel restoration material to match the color tone of the natural tooth. It is high and can be made a lively restoration with transparency.
- enamel restoration material with high transparency tends to darken due to the influence of the background color in the oral cavity (decrease in lightness), and as a result, the color tone of the underlying dentin restoration material is blocked.
- the dental filling / restoration material kit of the present invention includes (A) a polymerizable composition for a dentin restoration material for restoring a dentin portion, and (B) an enamel restoration laminated on the dentin restoration material. And (A) a dentin restoration material, and (A) a dentin restoration material having a different color tone and (A) a dentin restoration material (A) Refractive index n D a of the polymer of the polymerizable monomer in the polymerizable composition for use and (B) Refraction of the polymer of the polymerizable monomer in the polymerizable composition for the enamel restoration material (B) A difference from the rate n D b (n D a ⁇ n D b ) is 0.005 or more.
- One embodiment of the dental filling and restorative material kit of the present invention preferably comprises (A) a polymerizable composition for a dentin restorative material and (B) a polymerizable composition for an enamel restorative material.
- the contrast ratio of the 1 mm cured body of the polymerizable composition for dentin restorative material is 0.55 to 0.75
- enamel The contrast ratio of a 1 mm cured product of the polymerizable composition for a repair material is preferably 0.30 to 0.54.
- the dental filling / restoration material kit of the present invention it is possible to perform restoration with good color tone compatibility and little reduction in lightness in restoration of a tooth, so that restoration with high aesthetics is possible. In particular, even in a cavity where the background color can be seen through, the characteristic structure of the dentin can be reproduced.
- the dental filling / restoration material kit of this embodiment includes (A) a polymerizable composition for a dentin restoration material for restoring a dentin portion, and (B) an enamel restoration laminated on the dentin restoration material. And a polymerizable composition for a material.
- the color tone of (A) polymerizable composition for dentine restoration material and (B) polymerizable composition for enamel restoration material is different, and (A) in the polymerizable composition for dentin restoration material ( a) the difference between the refractive index n D b of the refractive index n D a polymer of a polymerizable monomer (B) enamel restorative material for the polymerizable composition (b) a polymerizable monomer of the polymer (n D a ⁇ n D b ) is 0.005 or more.
- a polymerizable monomer is included in the polymerizable composition for a dentin restoration material used in the dental filling restoration material kit of the present embodiment, and (B) polymerization for an enamel restoration material.
- the polymerizable composition contains (b) a polymerizable monomer, and the refractive index is defined by the refractive index n D a n D b of the polymer after the polymerization of each polymerizable monomer. ing.
- the refractive index of the polymer constituting the dentin restorative material is made 0.005 or more larger than the refractive index of the polymer constituting the enamel restorative material. It is a feature.
- the refractive index of enamel about 1.63 is larger than the refractive index of dentin (about 1.55), and this relationship is for the dental use of this embodiment. This is exactly the opposite of the filling and repair material kit. In natural teeth, dentin and enamel are not clearly separated, and a transitional boundary layer is formed between dentin and enamel, which is important for aesthetics. It is thought that it is working.
- the mechanism that expresses the effect that a restoration with good aesthetics is obtained when the dental filling / restoration material kit of the present embodiment is used is estimated as follows.
- the refractive index of the enamel restoration material is set to be relatively low, and the refractive index of the dentin restoration material is set to be relatively high.
- the reflectance of light generally increases as the refractive index of the object increases. For this reason, by setting the refractive index of the enamel restorative material to be low, reflection of light on the surface of the enamel restorative material is reduced, and as a result, the amount of light transmitted into the enamel restorative material is increased. Therefore, as a result, it is considered that light reflected at the interface between both the enamel restoration material and the dentin restoration material increases, and the aesthetics are improved.
- L * Lightness (L *)> It is a scale representing brightness, and is measured according to JIS Z8729. Specifically, a black background is brought into contact with a 1.0 mm thick sample plate, and the L * value represented by the CIELab color system in the reflected light when the standard light C is irradiated is read. The L * value indicates that the material is brighter as it is closer to 100 and darker as it is closer to 0.
- ⁇ Chromaticity (a *) (b *)> It is an index that represents hue and saturation, and is measured in accordance with the provisions of JIS Z8729. Specifically, the black background is brought into contact with a 1.0 mm thick sample plate, and the a * value and b * value represented by the CIELab color system in the reflected light when the standard light C is irradiated are read.
- a * and b * indicate the direction of the color, where a * is the red direction, -a * is the green direction, b * is the yellow direction, and -b * is the blue direction. The smaller the value, the duller the color.
- ⁇ Contrast ratio> It is a scale representing transparency, and is calculated using the Y value related to brightness among the tristimulus values of the XYZ color system defined in JIS Z8701. Specifically, a black background and a white background are brought into contact with a 1.0 mm thick sample plate, and a Y value in reflected light when standard light C is irradiated is read.
- the contrast ratio (C) can be obtained from Yb / Yw, where Yb for a black background is Yb and Y for a white background is Yw. The closer the value of C is to 1, the more opaque the material is, and the closer to 0 the transparent material.
- the dental filling / restoration material kit of the present embodiment includes (A) a polymerizable composition for a dentin restorative material for repairing a dentin portion (hereinafter, also simply referred to as a polymerizable composition for a dentin restorative material), (B) What is necessary is just to include the polymerizable composition for enamel restoration materials (henceforth only called the polymerizable composition for enamel restoration materials) laminated
- the dental filling / restoration material kit of the present embodiment may further include a composition other than the polymerizable composition for the dentin restorative material and the polymerizable composition for the enamel restorative material.
- the dental filling / restoration material kit of the present embodiment may be composed of only a polymerizable composition for a dentin restoration material and a polymerizable composition for an enamel restoration material.
- the dental filling / restoration material kit of the present embodiment may include one type of polymerizable composition for a dentin restoration material and one type of polymerizable composition for an enamel restoration material.
- the dental filling / restoration material kit of this embodiment includes one or more types of polymerizable composition for dentin restoration material and one or more types of polymerizable composition for enamel restoration material.
- it is selected from at least one polymerizable composition P for dentin restorative material selected from m kinds of polymerizable compositions for dentin restorative material and n polymerizable compositions for enamel restorative material.
- the at least one polymerizable composition Q for enamel restoration material may satisfy the following ⁇ I> and ⁇ II>.
- n and n are each an integer of 1 or more, and when m is 2 or more, m kinds of polymerizable compositions for dentin restoration material are different in color tone, and when n is 2 or more The n kinds of polymerizable compositions for enamel restoration materials have different chromaticities. ⁇ I> The color tone of the polymerizable composition P for dentin restoration material and the polymerizable composition Q for enamel restoration material are different.
- the refractive index n D a of the polymer of the polymerizable monomer (a) in the polymerizable composition P for dentine restoration material and the (b) polymerizable monomer in the polymerizable composition Q for enamel restoration material the difference between the refractive index n D b of the polymer of mer (n D a -n D b) is 0.005 or more.
- M is preferably an integer selected from the range of 1 to 20, more preferably an integer selected from the range of 2 to 20 for practical purposes, and n is also selected from the range of 1 to 20. It is preferably an integer selected, and in practice, it is more preferably an integer selected from the range of 2 to 20. Further, among the combinations of m kinds of polymerizable compositions for dentin restorative materials and n kinds of polymerizable compositions for enamel restorative materials, the combinations satisfying the above ⁇ I> and ⁇ II> are as described above. It is sufficient that at least one set exists in each.
- n + n 3 or more
- the number of m and n and the number of combinations satisfying ⁇ I> and ⁇ II> are larger as described above, it becomes easier to perform restoration with high aesthetics according to the patient's teeth.
- the dentine restorative material is obtained by curing the dentin restorative polymerizable composition
- the enamel restorative material is a polymerizable composition for the enamel restorative material. It is a cured product.
- stacked in the dental filling restoration material kit of this embodiment is not specifically limited, As a result, it means that the enamel restoration material should just be arrange
- the polymerizable composition for enamel restoration material may be filled on the polymerizable composition for quality restoration material, and then both polymerizable compositions may be cured.
- These two types of polymerizable compositions can take any form such as a paste, liquid, powder, jelly, etc., but a paste is particularly preferred.
- the color tone of the polymerizable composition for dentin restorative material and the polymerizable composition for enamel restorative material constituting the dental filling restorative material kit of the present embodiment is different. This is to match the enamel and dentin of the human teeth to be restored.
- the color tone is different means that there is a difference in any index among a *, b *, L *, and contrast ratio in the CIELab color system.
- a polymerizable composition for a dentin restoration material While the color tone of the product is a *:-2, b *: 12, L *: 60, the color tone of the polymerizable composition for enamel restoration material is a *:-2, b *: 12, L *: 48. In this case, there is no difference between a * and b *, and there is a difference only in L *, but it is recognized as a different color tone.
- the polymerizable composition for dentin restorative material and the polymerizable composition for enamel restorative material constituting the dental filling / restoration material kit of the present embodiment are subjected to color matching in consideration of color tone compatibility, and when measured in the CIELab color system, a * is provided in the range of ⁇ 5.0 to 3.0, more preferably in the range of ⁇ 4.0 to 2.0. On the other hand, b * is provided in the range of -10 to 20, more preferably in the range of -9 to 19.
- the absolute value of the difference in a * is in the range of 0.1 to 4, preferably 0.3 to 2, and the difference in b *
- the absolute value of is in the range of 0.1 to 30, preferably 0.3 to 15.
- the lightness L * of the polymerizable composition for dentin restorative material constituting the dental filling restorative material kit of this embodiment is selected from the range of 50 to 75, more preferably 51 to 74.
- the polymerizable composition for the enamel restoration material is selected from the range of L * of 40 to 55, more preferably 41 to 54.
- the difference in L * between the two polymerizable compositions Is in the range of 1-30, preferably in the range of 3-20.
- the color tone of the 1 mm cured body of the polymerizable composition for dentin restoration material (1 mm cured body means a 1 mm thick cured product obtained by curing the polymerizable composition) is CIELab color.
- the contrast ratio is preferably selected from the range of 0.55 to 0.75. More preferably, 0.57 to 0.70 is preferable.
- the polymerizable composition for an enamel restoration material is preferably selected from the range of the contrast ratio of 0.30 to 0.54, and more preferably in the range of 0.35 to 0.52.
- the polymerizable composition for dentin restorative material and the polymerizable composition for enamel restorative material are preferably different in transparency, specifically, the difference in contrast ratio between the two polymerizable compositions (dentin restorative material).
- the contrast ratio of the polymerizable composition for the coating-contrast ratio of the polymerizable composition for the enamel restoration material is preferably in the range of 0.05 to 0.40, more preferably in the range of 0.10 to 0.30. When the contrast ratio is in this range, it is well suited to the transparency of enamel and dentin of natural teeth. Thus, when the contrast ratio is controlled, the effects described below are remarkably exhibited.
- the contrast ratio when the contrast ratio is controlled as described above, the color tone compatibility with natural teeth is good, but the enamel restoration part looks dark, and the characteristic structure of the dentin cannot be confirmed. There is a tendency to reduce aesthetics.
- the refractive index of the polymer of each polymerizable monomer constituting the polymerizable composition for dentin restorative material and the polymerizable composition for enamel restorative material like the dental filling restorative material kit of this embodiment By adjusting to a specific range, the above-mentioned problem of aesthetic deterioration is solved. Specifically, since a dentin restoration material having a large contrast ratio has high brightness, the amount of light reflected at the interface between the dentin restoration material and the enamel restoration material increases. Furthermore, since the enamel restoration material laminated
- the dental filling and restorative material kit includes (A) a polymerizable composition for a dentin restorative material and (B) a polymerizable composition for an enamel restorative material that constitute the dental filling and restorative material kit of this embodiment.
- a polymerizable composition having a special color tone may be included.
- the brightness suitable for opaque white teeth after bleaching is high (L * is greater than 75), and the contrast ratio suitable for white color polymerizable compositions and highly transparent teeth. Examples thereof include a polymerizable composition having a transparent color of less than 0.3.
- the dental filling restorative material kit having such a color tone is adopted from a general dental restorative material, and a composite resin composed of a polymerizable monomer, a polymerization initiator, a filler, and a colorant is used. .
- each polymerizable monomer constituting (A) a polymerizable composition for a dentin restoration material and (B) a polymerizable composition for an enamel restoration material
- the refractive indexes of the polymers are different. Specifically, (A) the refractive index n D a of the polymer of the polymerizable monomer in the polymerizable composition for a dentin restoration material and (B) the polymerizable composition for an enamel restoration material (B)
- the difference (n D a ⁇ n D b ) from the refractive index n D b of the polymer of the polymerizable monomer is 0.005 or more.
- the difference in refractive index (n D a ⁇ n D b ) is preferably 0.007 or more, more preferably 0.009 or more.
- the polymerizable monomer used in dentistry is limited from the viewpoint of safety, and can be composed of a polymerizable monomer generally used in dentistry.
- the difference in refractive index is 0.15. It is almost the upper limit.
- the refractive index difference is too large, the reflection of light at the interface also increases, and the characteristic structure (mamelon) of the dentin becomes conspicuous, which may make it impossible to achieve harmony with the restoration tooth periphery.
- the difference in refractive index (n D a ⁇ n D b ) is preferably 0.15 or less, more preferably 0.065 or less, further preferably 0.05 or less, and particularly preferably 0.03 or less.
- the refractive index of the polymerizable monomer polymer suitable for each polymerizable composition can be appropriately selected as long as the above refractive index difference is satisfied.
- the refractive index of the polymer of the polymerizable monomer used in the polymerizable composition is preferably 1.53 to 1.60, and more preferably 1.54 to 1.58.
- the refractive index of the polymer of the polymerizable monomer used in the polymerizable composition for enamel restoration material is preferably 1.45 to 1.57, and more preferably 1.50 to 1.56. .
- the refractive index in the dental filling / restoration material kit of the present embodiment indicates a value measured with an Abbe refractometer in an atmosphere at 25 ° C.
- the refractive index n D a of the polymer of the polymerizable monomer (a) in the polymerizable composition for dentin restorative material is (B) in the polymerizable composition for enamel restorative material (b It is very important that the refractive index n D b of the polymer of the polymerizable monomer).
- the refractive index (about 1.55) of dentin of natural teeth is lower than the refractive index (about 1.63) of enamel of natural teeth. That is, the two types of polymerizable compositions constituting the dental filling / restoration material kit of the present embodiment have opposite magnitude relationships with the dentin of natural teeth and the refractive index of enamel.
- a dental filling restorative material kit is not merely a mimic of the properties of natural teeth.
- each of the polymerizable compositions (A) and (B) has a refractive index of a polymer of a polymerizable monomer contained in each of the specific ranges.
- any conventional dental restoration material may be adopted and used.
- a composite resin composed of a polymerizable monomer, a polymerization initiator, a filler, and a colorant is used as a general dental restorative material.
- polymerizable monomer those used as the same component of the composite resin in the dental field can be used without limitation.
- a (meth) acrylate-based polymerizable monomer is preferable, and from the viewpoints of curing speed, mechanical properties of the cured body, water resistance, color resistance, and the like, these are more preferably polyfunctional ones.
- polyfunctional (meth) acrylate-based polymerizable monomer examples include the following (I) to (III).
- (I) Bifunctional polymerizable monomer i) Aromatic compound type 2,2-bis (methacryloyloxyphenyl) propane, 2,2-bis [4- (3-methacryloyloxy) -2-hydroxypropoxyphenyl] Propane (hereinafter abbreviated as bis-GMA), 2,2-bis (4-methacryloyloxyphenyl) propane, 2,2-bis (4-methacryloyloxypolyethoxyphenyl) propane (hereinafter abbreviated as D2.6E) ), 2,2-bis (4-methacryloyloxydiethoxyphenyl) propane, 2,2-bis (4-methacryloyloxytetraethoxyphenyl) propane, 2,2-bis (4-methacryloyloxypentaethoxyphenyl) propane, 2,2-bis (4-methacryloyloxydipropoxyphenyl) propane 2 (4-methacryloyloxydiethoxyphenyl) -2 (4-methacryloyloxytrieth
- Aliphatic compounds ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate (hereinafter abbreviated as 3G), tetraethylene glycol dimethacrylate, neopentyl glycol dimethacrylate, 1,3-butanediol di Methacrylate, 1,4-butanediol dimethacrylate, 1,6-hexanediol dimethacrylate and acrylates corresponding to these methacrylates; 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, 3-chloro-2-hydroxypropyl methacrylate, etc.
- Methacrylates or vinyl monomers having —OH groups such as acrylates corresponding to these methacrylates, Diadducts obtained from adducts with diisocyanate compounds such as socyanate, trimethylhexamethylene diisocyanate, diisocyanate methylcyclohexane, isophorone diisocyanate, methylenebis (4-cyclohexylisocyanate), for example 1,6-bis (methacrylethyloxycarbonylamino) Trimethylhexane (hereinafter abbreviated as “UDMA”); acrylic acid anhydride, methacrylic acid anhydride, 1,2-bis (3-methacryloyloxy-2-hydroxypropoxy) ethyl, di (2-methacryloyloxypropyl) phosphate, etc. .
- diisocyanate compounds such as socyanate, trimethylhexamethylene diisocyanate, diisocyanate methylcyclohexane, isophorone diisocyan
- Methacrylates such as trimethylolpropane trimethacrylate, trimethylolethane trimethacrylate, pentaerythritol trimethacrylate, trimethylolmethane trimethacrylate, and acrylates corresponding to these methacrylates.
- diisocyanate compounds such as 1,4-diphenylmethane diisocyanate and tolylene-2,4-diisocyanate and glycidol dimethacrylate.
- polyfunctional (meth) acrylate polymerizable monomers usually have a refractive index (25 ° C.) of the cured product in the range of 1.45 to 1.60.
- the polymerizable monomer used in each of the two kinds of polymerizable compositions constituting the dental filling / restoration material kit of the present embodiment is not limited to the (meth) acrylate system, but for example, as shown above What is necessary is just to select suitably from a polymerizable monomer, considering a refractive index.
- polymers of aromatic polymerizable monomers for example, D2.6E and bisGMA
- polymers of aliphatic polymerizable monomers for example, 3G and UDMA
- the refractive index may be adjusted as appropriate by combining these polymerizable monomers alone or in combination of two or more.
- monofunctional (meth) acrylate-based monomethacrylates such as methacrylates such as methyl methacrylate, ethyl methacrylate, isopropyl methacrylate, hydroxyethyl methacrylate, tetrahydrofurfuryl methacrylate, glycidyl methacrylate, and acrylates corresponding to these methacrylates.
- a polymerizable monomer other than the above-mentioned (meth) acrylate monomer may be used.
- any known initiator can be used without any limitation as long as it can polymerize and cure the polymerizable monomer.
- a photopolymerization initiator is often used, but even a chemical polymerization initiator (normal temperature redox initiator), a thermal polymerization initiator, or the like can be used.
- the polymerization initiators may be used alone or in combination of two or more.
- Photopolymerization initiators include benzoin alkyl ethers such as benzoin methyl ether, benzoin ethyl ether and benzoin isopropyl ether, benzyl ketals such as benzyl dimethyl ketal and benzyl diethyl ketal, diaryl ketones such as benzophenone, anthraquinone and thioxanthone, diacetyl , Benzyl, camphorquinone, ⁇ -diketones such as 9,10-phenanthraquinone, bis- (2,6-dichlorobenzoyl) phenylphosphine oxide, bis- (2,6-dichlorobenzoyl) -2,5- Dimethylphenylphosphine oxide, bis- (2,6-dichlorobenzoyl) -4-propylphenylphosphine oxide, bis- (2,6-dichlorobenzoyl) -1-naph
- the photopolymerization initiator is preferably used in combination with a reducing compound.
- Reducing compounds include tertiary amines such as 2- (dimethylamino) ethyl methacrylate, ethyl 4-dimethylaminobenzoate, N-methyldiethanolamine, dimethylaminobenzaldehyde, terephthalaldehyde, 2-mercaptobenzoxazole, 1- Examples thereof include sulfur-containing compounds such as decanethiol, thiosalicylic acid, and thiobenzoic acid, and N-phenylalanine.
- a photoacid generator in order to further increase the activity of the photopolymerization initiator.
- the photoacid generator include diaryl iodonium salt compounds, sulfonium salt compounds, sulfonic acid ester compounds, halomethyl-substituted S-triazine conductors, pyridinium salt compounds, and the like.
- the photopolymerization initiator is preferably an ⁇ -diketone such as camphorquinone, and more preferably a reducing compound such as 4-dimethylaminobenzoic acid is used in combination.
- thermal polymerization initiators benzoyl peroxide, p-chlorobenzoyl peroxide, tert-butyl peroxy-2-ethylhexanoate, tert-butyl peroxydicarbonate, diisopropyl peroxydicarbonate, etc.
- azo compounds such as azobisisobutyronitrile.
- Examples of the chemical polymerization initiator include a system in which a peroxide used in the above thermal polymerization initiator and a tertiary amine exemplified as a reducing compound in the photopolymerization initiator are combined. It is done.
- the blending amount of the polymerization initiator is preferably 0.01 to 5 parts by mass, more preferably 0.1 to 5 parts by mass with respect to 100 parts by mass of the polymerizable monomer. . It is used in such a range that the desired color tone of the polymerizable composition can be realized.
- amorphous silica, silica-zirconia, silica-titania, quartz examples thereof include inorganic powders such as alumina, barium glass, zirconia, titania, lanthanoid, colloidal silica and the like. These inorganic powders may be a surface treated product with a silane coupling agent or the like. Furthermore, organic powder and organic-inorganic composite powder can also be used.
- particularly preferably used fillers are produced by the methods described in JP-A Nos. 58-110414 and 58-156524. The spherical composite oxide particles.
- the blending amount of the filler is preferably 200 to 1900 parts by mass, more preferably 300 to 900 parts by mass with respect to 100 parts by mass of the polymerizable monomer. It is used in such a range that the desired color tone of the polymerizable composition can be realized.
- the polymerizable composition containing the polymerizable monomer, the polymerization initiator, and the filler is adjusted to a desired color tone by blending the colorant.
- the colorant used may be a pigment or a dye. If it is a pigment, white pigments such as titanium oxide, zinc oxide, zirconium oxide, etc .; red pigments such as brown, molybdenum red, chromoftal red; yellow iron oxide, titanium yellow, chromium oxide, chromoftal yellow Yellow pigments such as cobalt blue, ultramarine blue, bituminous blue, chromoftal blue, and phthalocyanine blue; black pigments such as black iron oxide and carbon black.
- dyes red dyes of KAYASET RED G (Nippon Kayaku), KAYASET RED B (Nippon Kayaku); yellow dyes such as KAYASET Yellow 2G, KAYASET Yellow GN; KAYASET Blue N, KAYASETBlu And the like.
- a water-insoluble pigment rather than a water-soluble dye.
- the average particle size of the pigment is usually about 1 ⁇ m or less. If necessary, commercially available pigments can be pulverized to smaller particle sizes. Also, pigments can be added to the formulation in the form of dispersions to facilitate mixing with other components of the dental filling restorative material. For example, it can be used as a master batch in which a pigment is dispersed in a low-viscosity liquid such as a reactive diluent or in a powder such as inorganic particles.
- the a * is in the range of ⁇ 5.0 to 3.0, and the b * is ⁇ 10 to
- the L * of the polymerizable composition for a dentine restoration material is 50 to 75, and the L * of the polymerizable composition for an enamel restoration material is 40 to 55.
- the contrast ratio can also be adjusted with a colorant, but it is preferable to adjust with a white pigment.
- the total amount thereof is preferably 0.0005 to 0.5 parts by mass, more preferably 0.001 to 0.5 parts by mass with respect to 100 parts by mass of the polymerizable monomer. 0.3 parts by mass.
- the polymerizable composition constituting the dental filling / restoration material kit of the present embodiment is composed of i) filling / restoring material (composite resin) and ii) pretreatment material (primer) or adhesive material (bonding material). Is a material similar to the composite resin used in the photopolymerization type dental filling / restoration material kit.
- the polymerizable composition constituting the dental filling / restoration material kit of the present embodiment has an adhesive property between the composite resin and the tooth surface in terms of the main function / role of the material and the presence or absence of water or an organic solvent. It is a material that is fundamentally different from primers and bonding materials that have the main functions and roles of improvement, and that contain a large amount of water and organic solvents. That is, in the polymerizable composition constituting the dental filling / restoration material kit of the present embodiment, the content of water and the organic solvent may be usually 0 parts by mass (that is, the composite resin described above) (that is, Free of water and organic solvents).
- the polymerizable composition constituting the dental filling / restoration material kit of this embodiment may contain a trace amount of water and / or an organic solvent.
- the content of water and / or organic solvent is preferably in the range of 0 to 1 part by weight, for example, in the range of 0 to 0.5 part by weight per 100 parts by weight of the polymerizable monomer component. More preferred.
- the dental filling / restoration material kit of the present embodiment can be used for any restoration of a tooth, and is used according to a general method of using a composite resin for filling. Specifically, after treating the cavity of the tooth to be repaired with an appropriate pretreatment material or adhesive, the polymerizable composition constituting the dental filling / restoration material kit of the present embodiment is directly filled to form the tooth shape. And a method of polymerizing and curing by irradiating strong light with a dedicated light irradiator.
- the dental filling / restoration material kit of the present embodiment is for enamel restoration material on a dentin restoration material polymerizable composition or a dentin restoration material obtained by curing a dentin restoration material polymerizable composition. What is necessary is just to use it in the aspect by which a polymeric composition is laminated
- the polymerizable composition for dentin restorative material is laminated on the enamel restorative material that is filled and cured thinly on the tongue side with the polymerizable composition for enamel restorative material, Furthermore, there is no problem that the polymerizable composition for enamel restoration material is laminated.
- the dental filling / restoration material kit of the present embodiment has a dentin restoration material in order to adapt the color tone of the restoration target human tooth and the restoration material in a wide range of restoration from the actual incision to the neck.
- the polymerizable composition for enamel restoration material may not be partially laminated on the polymerizable composition.
- the polymerizable composition for an enamel restoration material may be thickly laminated on the polymerizable composition for a dentin restoration material.
- the polymerizable composition for dentin restoration material is the polymerizable composition for enamel restoration material (or enamel restoration material).
- the polymerizable composition for dentin restoration material may be partially on the surface layer.
- the polymerizable composition for dentin restorative material and the polymerizable composition for enamel restorative material used in the dental filling restorative material kit of the present embodiment are well adapted to human enamel and dentin.
- a polymerizable composition for a restoration material may be selected and used. Necessary species from the A line (red brown), B line (red yellow), C line (gray), and D line (red grey) provided with a general shade guide ("VITAPAN Classic" is the most versatile) Is adopted as appropriate.
- a * is ⁇ 5.0. In the range of -3.0, more preferably in the range of -4.0 to 2.0.
- b * is provided in the range of ⁇ 10 to 20, more preferably in the range of ⁇ 9 to 19.
- the thickness for filling the polymerizable composition for dentine restoration material and the polymerizable composition for enamel restoration material constituting the dental filling restoration material kit of the present embodiment may be appropriately adjusted depending on the restoration site.
- the polymerizable composition for dentin restoration material is filled and repaired with a thickness of 3 mm or less and the polymerizable composition for enamel restoration material with a thickness of 2 mm or less.
- the dental filling / restoration material kit of the present embodiment is particularly suitable for restoration including a cut end portion such as a class IV cavity that is thinly filled with a polymerizable composition for dentin restoration material.
- the cut end portion is usually filled with a polymerizable composition for dentin restorative material at a thickness of 1 mm or less, more preferably 0.5 mm or less, whereas a polymerizable composition for enamel restorative material is 1 mm. It is filled with a thickness of about 2 mm.
- a polymerizable composition for dentin restorative material is thin and the polymerizable composition for enamel restorative material is thickly filled, the restoration is generally darkened, The structure (Mamelon) is difficult to see and the aesthetics are reduced.
- the dental filling and restorative material kit of this embodiment is used, the problem of a decrease in lightness caused by laminating the enamel restoration part is improved, the characteristic form of the dentin is reproduced, and the natural tooth and Restoration with good color compatibility can be achieved.
- Refractive index 1.52
- F-2 A surface-treated product of amorphous silica zirconia (average particle size: 1.2 ⁇ m) treated with ⁇ -methacryloyloxypropyltrimethoxysilane.
- F-3 Spherical silica zirconia (average particle size: 0.2 ⁇ m) treated with ⁇ -methacryloyloxypropyltrimethoxysilane.
- Refractive index 1.52
- F-4 organic / inorganic composite filler, bis-GMA 40 parts by weight, 3G 60 parts by weight, azobisisobutyronitrile 1 part by weight, F-3 300 parts by weight, after degassing and thermal polymerization, What performed grinding
- the color tone was measured according to JIS Z8729. Specifically, the polymerizable composition was filled in a 1.0 mm thick polyacetal mold having a 7 mm diameter through-hole, pressed with a polypropylene film, and a dental light irradiator (Toxo Powerlite, The product was irradiated with light at a light output density of 700 mW / cm 2, manufactured by Tokuyama Dental Co., Ltd. for 30 seconds.
- the color tone of the reflected light when irradiated with the standard light C was measured using a color difference meter (manufactured by Tokyo Denshoku Co., Ltd .: TC-1800MKII) under black background conditions, and the CIELab color system was used.
- the brightness L * and the chromaticity a * and b *, respectively, were obtained.
- the polypropylene film is peeled off, another 0.5 mm thick polyacetal mold with a 7 mm diameter through-hole is stacked, (B) the polymerizable composition for the enamel restoration material is filled, and the polypropylene film is pressed. Then, light was irradiated for 30 seconds with a dental light irradiator. About the surface of the polymerizable composition for the enamel restoration material (B) of the obtained cured product, the color tone in the reflected light when irradiated with the standard light C was measured with a color difference meter (Tokyo Denshoku Co., Ltd .: TC-1800MKII). The lightness L * and the chromaticities a * and b * expressed in the CIELab color system were measured respectively under the black background conditions.
- L * S is L * of a cured product (thickness 1 mm) of a polymerizable composition for a dentin restoration material
- L * I is a cured product (thickness 0.5 mm) of the polymerizable composition for a dentin restoration material
- L * of a cured product obtained by laminating a polymerizable composition for enamel restorative material to a thickness of 0.5 mm. ⁇ L * indicates that the greater the negative value, the lower the brightness due to lamination.
- VITAPAN classic product name: VITA
- box-shaped cavity approximately 3 mm wide, approximately 4 mm long
- the aesthetics of each restoration site were evaluated according to the following criteria for the class I cavity for the restoration tooth color compatibility, and for the class IV cavity for the restoration tooth color compatibility and mameron visibility.
- Example 1 In the dark, 0.2 parts by mass of CQ, 0.5 parts by mass of DMBE, and 100 parts by mass of polymerizable monomer M-1 in which 0.15 parts by mass of HQME were dissolved and 400 parts by mass of filler F-1 Parts were mixed and kneaded to prepare a polymerizable composition. To this polymerizable composition, an appropriate amount of pigment is added so as to have the contrast ratio C and color tone L *, a *, b * shown in Table 1, and the mixture is thoroughly mixed and kneaded and defoamed. It was set as the composition P1.
- a polymerizable composition P2 was prepared in the same manner as the polymerizable composition P1 except that the types and blending amounts of the polymerizable monomer and filler used were changed to the conditions shown in Table 1. All the polymerizable compositions were pasty.
- the polymerizable composition P1 was used as a polymerizable composition (A) for a dentin restoration material
- the polymerizable composition P2 was used as a polymerizable composition (B) for an enamel restoration material, and various evaluations were performed by the methods described above. .
- the results are shown in Table 2.
- Example 10 comparative example 4
- the polymerizable compositions P1 ′, P2, P4, and P10 ′ were changed in the same manner as the polymerizable composition P1, except that the types and amounts of the polymerizable monomers and fillers used were changed to the conditions shown in Table 1. It was adjusted. All the polymerizable compositions were pasty. Next, various evaluations were performed by combining these polymerizable compositions as shown in Table 2. In the evaluation of the color tone at the time of lamination shown in Table 2, the thickness of the polymerizable composition for dentin restorative material was changed to 0.5 mm, and the polymerizable composition for enamel restorative material was changed to 1.0 mm.
- Table 2 shows the results of evaluation according to the already described (3) measurement procedure of color tone measurement during lamination. Further, regarding ⁇ L *, a cured product of the polymerizable composition for dentin restorative material used for determining the value of L * S (that is, in the polymerizable composition P1 ′ used in Example 10 and Comparative Example 4) Except for changing the thickness of the polymerizable composition P10 ′) used to 1.5 mm, the calculation was performed according to the above-described (4) color tone change evaluation procedure due to lamination. The results are shown in Table 2.
- Example 10 As understood from the results of Example 10 shown in Table 2, if the refractive index difference (n D a ⁇ n D b ) is 0.005 or more, the enamel restoration material is formed on the dentin restoration material. Even if it is filled thickly, the decrease in brightness is small, and the visibility of the melon at the cut end is high.
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Abstract
Description
1)齲蝕などの損傷を受けた歯牙(以下、「修復歯牙」とも言う)を切削によって窩洞を形成する。
2)上記窩洞に接着材を介して(一般には、ボンディング材と呼ばれる接着材を窩洞に塗布し、必要に応じてエアーブローを行なった後に光照射を行なって接着材で窩洞を覆う)重合性組成物を築盛し、光硬化させて窩洞を封鎖する。
3)仕上げとして、窩洞に充填された複合充填修復材料の硬化体に対して、形態修正、研磨を行なう。
方法により行なうのが一般的である。
さらに、色調だけではなく、天然歯の光学特性に合わせた材料も提案されている((特許文献1)。光拡散性に着目し、象牙質が多い部分には光拡散性が高い材料を、エナメル質が多い部分には光拡散性が低く、透過性が高い材料を用いることで審美性が良い修復ができることが報告されている。
本発明は上記事情に鑑みてなされたものであり、歯牙の修復において、色調適合性が良好であり、かつ明度の低下が少ない修復を行うことができるため、審美性の高い修復を可能とする歯科用充填修復材料キットを提供すること、特に、背景の色調が透けて見えるような窩洞であっても、象牙質の特徴的な構造をも再現できることができる歯科用充填修復材料キットを提供することを課題とする。
明るさを表す尺度であり、JIS Z8729に規定にしたがって測定される。具体的には、1.0mm厚の試料板に黒背景を接触させ、標準光Cを照射した際の反射光における、CIELab表色系で表されるL*値を読み取る。L*値は100に近いほど明るく、0に近いほど暗い材料であることを示す。
色相及び彩度を表す指標であり、JIS Z8729の規定にしたがって各測定される。具体的には1.0mm厚の試料板に黒背景を接触させ、標準光Cを照射した際の反射光における、CIELab表色系で表されるa*値及びb*値を読み取る。a*及びb*は、色の方向を示しており、a*は赤方向、-a*は緑方向、b*は黄方向、-b*は青方向を示し、それぞれ数値が大きいほど、鮮やかな色を示し、数値が小さいほどくすんだ色を示す。
透明性を表す尺度であり、JIS Z8701に規定されるXYZ表色系の三刺激値のうちの明るさに関するY値を用いて算出するものである。具体的には、1.0mm厚の試料板に黒背景、及び白背景を接触させ、標準の光Cを照射した際の反射光におけるY値を読み取る。黒背景の場合のYをYb、白背景の場合のYをYwとすると、コントラスト比(C)はYb/Ywから求められる。Cの値が1に近いほど不透明な材料であり、0に近いほど透明な材料であることを示す。
<I>象牙質修復材用重合性組成物Pとエナメル質修復材用重合性組成物Qとの色調が異なる。
<II>象牙質修復材用重合性組成物P中の(a)重合性単量体のポリマーの屈折率nD aとエナメル質修復材用重合性組成物Q中の(b)重合性単量体のポリマーの屈折率nD bとの差(nD a-nD b)が0.005以上である。
i)芳香族化合物系のもの
2,2-ビス(メタクリロイルオキシフェニル)プロパン、2,2-ビス[4-(3メタクリロイルオキシ)-2-ヒドロキシプロポキシフェニル]プロパン(以下、bis-GMAと略記する)、2,2-ビス(4-メタクリロイルオキシフェニル)プロパン、2,2-ビス(4-メタクリロイルオキシポリエトキシフェニル)プロパン(以下、D2.6Eと略記する)、2,2-ビス(4-メタクリロイルオキシジエトキシフェニル)プロパン、2,2-ビス(4-メタクリロイルオキシテトラエトキシフェニル)プロパン、2,2-ビス(4-メタクリロイルオキシペンタエトキシフェニル)プロパン、2,2-ビス(4-メタクリロイルオキシジプロポキシフェニル)プロパン、2(4-メタクリロイルオキシジエトキシフェニル)-2(4-メタクリロイルオキシトリエトキシフェニル)プロパン、2(4-メタクリロイルオキシジプロポキシフェニル)-2-(4-メタクリロイルオキシトリエトキシフェニル)プロパン、2,2-ビス(4-メタクリロイルオキシプロポキシフェニル)プロパン、2,2-ビス(4-メタクリロイルオキシイソプロポキシフェニル)プロパン及びこれらのメタクリレートに対応するアクリレート;2ヒドロキシエチルメタクリレート、2-ヒドロキシプロピルメタクリレート、3-クロロ-2-ヒドロキシプロピルメタクリレート等のメタクリレートあるいはこれらメタクリレートに対応するアクリレートのような-OH基を有するビニルモノマーと、ジイソシアネートメチルベンゼン、4,4‘-ジフェニルメタンジイソシアネートのような芳香族基を有するジイソシアネート化合物との付加から得られるジアダクト等。
エチレングリコールジメタクリレート、ジエチレングリコールジメタクリレート、トリエチレングリコールジメタクリレート(以下、3Gと略記する)、テトラエチレングリコールジメタクリレート、ネオペンチルグリコールジメタクリレート、1,3-ブタンジオールジメタクリレート、1,4-ブタンジオールジメタクリレート、1,6-ヘキサンジオールジメタクリレートおよびこれらのメタクリレートに対応するアクリレート;2-ヒドロキシエチルメタクリレート、2-ヒドロキシプロピルメタクリレート、3-クロロ-2-ヒドロキシプロピルメタクリレート等のメタクリレートあるいはこれらのメタクリレートに対応するアクリレートのような-OH基を有するビニルモノマーと、ヘキサメチレンジイソシアネート、トリメチルヘキサメチレンジイソシアネート、ジイソシアネートメチルシクロヘキサン、イソフォロンジイソシアネート、メチレンビス(4-シクロヘキシルイソシアネート)のようなジイソシアネート化合物との付加体から得られるジアダクト、例えば、1,6-ビス(メタクリルエチルオキシカルボニルアミノ)トリメチルヘキサン(以下、「UDMA」と略す。);無水アクリル酸、無水メタクリル酸、1,2-ビス(3-メタクリロイルオキシ-2-ヒドロキシプロポキシ)エチル、ジ(2-メタクリロイルオキシプロピル)フォスフェート等。
トリメチロールプロパントリメタクリレート、トリメチロールエタントリメタクリレート、ペンタエリスリトールトリメタクリレート、トリメチロールメタントリメタクリレート等のメタクリレート及びこれらのメタクリレートに対応するアクリレート等。
ペンタエリスリトールテトラメタクリレート、ペンタエリスリトールテトラアクリレート及びジイソシアネートメチルベンゼン、ジイソシアネートメチルシクロヘキサン、イソフォロンジイソシアネート、ヘキサメチレンジイソシアネート、トリメチルヘキサメチレンジイソシアネート、メチレンビス(4-シクロヘキシルイソシアネート)、4,4-ジフェニルメタンジイソシアネート、トリレン-2,4-ジイソシアネートのようなジイソシアネート化合物とグリシドールジメタクリレートとの付加体から得られるジアダクト等。
(1)重合性単量体
・M-1:D2.6E(80)/3G(20)
ポリマーの屈折率:1.556
・M-2:bis-GMA(60)/3G(40)
ポリマーの屈折率:1.546
・M-3:UDMA(45)/D2.6E(35)/3G(20)
ポリマーの屈折率:1.530
・M-4:UDMA(60)/3G(40)
ポリマーの屈折率:1.509
・M-5:D2.6E(100)
ポリマーの屈折率:1.567
上記括弧内は質量部を示しており、ポリマーの屈折率は複数の重合性単量体(例えばM-1ではD2.6Eと3G)を混合し重合させ生成したポリマーの屈折率を示す。
(2)光重合開始剤
・カンファーキノン(CQ)
・N,N-ジメチルp-安息香酸エチル(DMBE)
(3)重合禁止剤
・ハイドロキノンモノメチルエーテル(HQME)
(4)充填材
・F-1:球状シリカジルコニアフィラー(平均粒子径;0.4μm)60質量部、微粒子シリカチタニア(平均粒子径;0.07μm)40質量部を混合、解砕したものを、γ-メタクリロイルオキシプロピルトリメトキシシランで表面処理物を行ったもの。屈折率:1.52
・F-2:不定形シリカジルコニア(平均粒子径;1.2μm)をγ-メタクリロイルオキシプロピルトリメトキシシランで表面処理物を行ったもの。屈折率:1.53
・F-3:球状シリカジルコニア(平均粒子径;0.2μm)をγ-メタクリロイルオキシプロピルトリメトキシシランで表面処理物を行ったもの。屈折率:1.52
・F-4:有機無機複合充填材、bis-GMA 40質量部、3G 60質量部、アゾビスイソブチロニトリル 1質量部、F-3 300質量部を混合、脱気、熱重合した後に、粉砕、表面処理を行ったもの、平均粒子径30μm。屈折率:1.52
(5)着色剤
・白顔料(二酸化チタン)
・黄顔料(ピグメントイエロー)
・赤顔料(ピグメントレッド)
・青顔料(ピグメントブルー)
(1)コントラスト比の測定
直径7mmの貫通孔を開けた厚さ1mmのポリアセタール製型に重合性組成物を填入し、ポリプロピレンフィルムで圧接して、歯科用光照射器(トクソーパワーライト、トクヤマデンタル社製;光出力密度700mW/cm2)で30秒光照射した。得られた硬化体について、標準光Cを照射した際の反射光における色調を、色差計(東京電色社製:TC-1800MKII)を用い、白背景と黒背景条件下で測定し、得られたそれぞれのY値から下記の式を用いて算出した。
C(コントラスト比)=Yb(黒背景でのY値)/Yw(白背景でのY値)
JIS Z8729に規定にしたがって測定した。具体的には、直径7mmの貫通孔を開けた厚さ1.0mmのポリアセタール製型に重合性組成物を填入し、ポリプロピレンフィルムで圧接して、歯科用光照射器(トクソーパワーライト、トクヤマデンタル社製;光出力密度700mW/cm2)で30秒光照射した。得られた硬化体について、標準光Cを照射した際の反射光における色調を、色差計(東京電色社製:TC-1800MKII)を用い、黒背景条件下で測定し、CIELab表色系で表される、明度L*、及び色度a*、b*を夫々得た。
JIS Z8279の規定にしたがって測定した。具体的には、直径7mmの貫通孔をあけた厚さ0.5mmのポリアセタール製型に(A)象牙質修復材用重合性組成物を填入し、ポリプロピレンフィルムで圧接して、歯科用光照射器(トクソーパワーライト、トクヤマデンタル社製;光出力密度700mW/cm2)で30秒光照射した。ポリプロピレンフィルムを剥がし、もう一枚の直径7mmの貫通孔をあけた厚さ0.5mmのポリアセタール製型を重ね、(B)エナメル質修復材用重合性組成物を填入し、ポリプロピレンフィルムで圧接して、歯科用光照射器で30秒光照射した。得られた硬化体の(B)エナメル質修復材用重合性組成物の面について、標準光Cを照射した際の反射光における色調を、色差計(東京電色社製:TC-1800MKII)を用いて、黒背景条件下で測定し、CIELab表色系で表される、明度L*、及び色度a*、b*を夫々得た。
象牙質修復材用重合性組成物の硬化体(象牙質修復材)の色調の、エナメル質修復材用重合性組成物を積層、硬化することによる色調の変化を次の式で算出した。
ΔL*=L*S-L*I
背景色の影響を受けにくい裏打ちのあるI級窩洞と背景色の影響を受けやすい裏打ちのないIV級窩洞に対して審美性を評価した。具体的には、I級窩洞として、エンデュラポステリオ(商品名 松風社製)のM32 A3の第1大臼歯を用いて、咬合面中央にBox状の窩洞(横約4mm、縦約3mm、深さ約2mm)を作製し、これに対して調整した象牙質修復材用重合性組成物を充填し、成形後、硬化し、その上にエナメル質修復材用重合性組成物を充填、硬化し、研磨を行った。
<修復歯牙との色調適合性>
A:修復材料の色調が周辺部位と良く適合している。
B:修復材料の色調が周辺部位と適合しているが、修復箇所が分かる。
C:修復材料の色調が周辺部位より明確に暗く適合していない。
<マメロンの視認性>
A:マメロンの形状が視認できる。また、下記評価Bと比べて、天然歯により近い修復物となっている。
B:マメロンの形状が視認できる。
C:マメロンの形状が視認できない。
暗所にて、CQを0.2質量部、DMBEを0.5質量部、HQMEを0.15質量部溶解させた重合性単量体M-1 100質量部と充填材F-1 400質量部を混合練和し、重合性組成物を調製した。この重合性組成物に、表1に示すコントラスト比C及び色調L*、a*、b*を有するように、適量の顔料を添加し、十分に混合練和し、脱泡したものを重合性組成物P1とした。また、使用した重合性単量体および充填材の種類・配合量を表1に示す条件に変更した以外は、重合性組成物P1と同様にして調製したものを重合性組成物P2とした。いずれの重合性組成物もペースト状であった。重合性組成物P1を象牙質修復材用重合性組成物(A)、重合性組成物P2をエナメル質修復材用重合性組成物(B)として使用し、前記した方法によって各種評価を行った。結果を表2に示した。
使用した重合性単量体および充填材の種類・配合量を表1に示す条件に変更した以外は、重合性組成物P1と同様にして重合性組成物P3~P17を調製した。いずれの重合性組成物もペースト状であった。次に、象牙質修復材用重合性組成物(A)として用いた重合性組成物とエナメル質修復材用重合性組成物(B)として用いた重合性組成物とを、表2に示すように組み合わせて、各種評価を実施した。評価結果を表2に示した。
使用した重合性単量体および充填材の種類・配合量を表1に示す条件に変更した以外は、重合性組成物P1と同様にして重合性組成物P1’、P2、P4、P10’を調整した。いずれの重合性組成物もペースト状であった。次に、これらの重合性組成物を表2に示すように組み合わせて各種評価を行った。なお、表2に示す積層時の色調の評価に際しては、象牙質修復材用重合性組成物を厚さ0.5mm、エナメル質修復材用重合性組成物を厚さ1.0mmに変更した以外は、既述した(3)積層時の色調測定の測定手順に従って評価した結果を表2に示した。また、ΔL*に関しては、L*Sの値を求めるのに用いた象牙質修復材用重合性組成物の硬化体(すなわち、実施例10で用いた重合性組成物P1’および比較例4で用いた重合性組成物P10’)の厚さを1.5mmに変更した以外は、既述した(4)積層による色調変化の評価手順に従って算出した。結果を表2に示した。
Claims (3)
- (A)象牙質部分を修復するための象牙質修復材用重合性組成物と、(B)象牙質修復材の上に積層されるエナメル質修復材用重合性組成物とを含み、
(A)象牙質修復材用重合性組成物と(B)エナメル質修復材用重合性組成物との色調が異なり、かつ、(A)象牙質修復材用組成物中の(a)重合性単量体のポリマーの屈折率nD aと(B)エナメル質修復材用重合性組成物中の(b)重合性単量体のポリマーの屈折率nD bとの差(nD a-nD b)が0.005以上であることを特徴とする歯科用充填修復材料キット。 - (A)象牙質修復材用重合性組成物と(B)エナメル質修復材用重合性組成物とからなることを特徴とする請求項1に記載の歯科用充填修復材料キット。
- (A)象牙質修復材用重合性組成物の1mm硬化体のコントラスト比が0.55~0.75であり、(B)エナメル質修復材用重合性組成物の1mm硬化体のコントラスト比が0.30~0.54である請求項1または2に記載の歯科用充填修復材料キット。
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPWO2017069274A1 (ja) * | 2015-10-21 | 2017-12-14 | 株式会社トクヤマデンタル | 硬化性組成物及び歯科用充填修復材料 |
JP2018095620A (ja) * | 2016-12-15 | 2018-06-21 | 株式会社トクヤマデンタル | 歯科用樹脂複合材料 |
US11273104B2 (en) | 2017-03-06 | 2022-03-15 | Tokuyama Dental Corporation | Photocurable composition and dental restoration filling material |
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Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6258919B2 (ja) * | 2013-03-19 | 2018-01-10 | 株式会社トクヤマデンタル | 歯科用充填修復材料キット |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58110414A (ja) | 1981-12-23 | 1983-07-01 | Tokuyama Soda Co Ltd | 無機酸化物及びその製造方法 |
JPS58156524A (ja) | 1982-03-06 | 1983-09-17 | Tokuyama Soda Co Ltd | 無機酸化物及びその製造方法 |
JPH09169613A (ja) | 1995-12-21 | 1997-06-30 | Kuraray Co Ltd | 歯科用複合修復材料 |
JPH11100305A (ja) * | 1997-09-29 | 1999-04-13 | Kuraray Co Ltd | 歯科用修復材料 |
JP2007082679A (ja) | 2005-09-21 | 2007-04-05 | Tokuyama Corp | 歯科補綴物製造用キット |
JP2009508930A (ja) | 2005-09-22 | 2009-03-05 | ゲーデーエフ ゲゼルシャフト フュール デンターレ フォルシュング ウント イノベーショネン ゲゼルシャフト ミット ベシュレンクテル ハフツング | 歯科用材料 |
WO2012128167A1 (ja) * | 2011-03-18 | 2012-09-27 | 株式会社トクヤマデンタル | 象牙質用修復材料キット |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2326736A (en) * | 1940-09-21 | 1943-08-17 | Shell Dev | Polymerizing unsaturated resinophoric compounds by action of ultraviolet light in conjunction with beta substituted naphthalene derivatives |
JPH11180814A (ja) * | 1997-12-24 | 1999-07-06 | Gc:Kk | 歯質接着剤セット |
JP4269010B2 (ja) * | 2001-07-09 | 2009-05-27 | 学校法人日本大学 | 歯科用セルフエッチングプライマー処理剤 |
US7452487B2 (en) * | 2004-02-24 | 2008-11-18 | Uni-Chemical Co., Ltd. | Phosphorus-acid-group-containing (meth) acrylamide, its polymer and use thereof, and their production methods |
WO2006014127A1 (en) | 2004-08-06 | 2006-02-09 | Sca Hygiene Products Ab | An absorbent article |
US7495054B2 (en) * | 2005-09-19 | 2009-02-24 | 3M Innovative Properties Company | Curable compositions containing dithiane monomers |
JP6258919B2 (ja) * | 2013-03-19 | 2018-01-10 | 株式会社トクヤマデンタル | 歯科用充填修復材料キット |
-
2014
- 2014-03-10 JP JP2015506706A patent/JP6258919B2/ja active Active
- 2014-03-10 WO PCT/JP2014/056164 patent/WO2014148293A1/ja active Application Filing
- 2014-03-10 US US14/772,604 patent/US9687421B2/en active Active
- 2014-03-10 EP EP14770701.2A patent/EP2977040B1/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58110414A (ja) | 1981-12-23 | 1983-07-01 | Tokuyama Soda Co Ltd | 無機酸化物及びその製造方法 |
JPS58156524A (ja) | 1982-03-06 | 1983-09-17 | Tokuyama Soda Co Ltd | 無機酸化物及びその製造方法 |
JPH09169613A (ja) | 1995-12-21 | 1997-06-30 | Kuraray Co Ltd | 歯科用複合修復材料 |
JPH11100305A (ja) * | 1997-09-29 | 1999-04-13 | Kuraray Co Ltd | 歯科用修復材料 |
JP2007082679A (ja) | 2005-09-21 | 2007-04-05 | Tokuyama Corp | 歯科補綴物製造用キット |
JP2009508930A (ja) | 2005-09-22 | 2009-03-05 | ゲーデーエフ ゲゼルシャフト フュール デンターレ フォルシュング ウント イノベーショネン ゲゼルシャフト ミット ベシュレンクテル ハフツング | 歯科用材料 |
WO2012128167A1 (ja) * | 2011-03-18 | 2012-09-27 | 株式会社トクヤマデンタル | 象牙質用修復材料キット |
Non-Patent Citations (2)
Title |
---|
"Adhesion YEARBOOK 2006", August 2006, QUINTESSENCE PUBLISHING CO., LTD., pages: 129 - 137 |
MASASHI MIYAZAKI: "Science & Technique of Composite Resin Restoration", January 2010, QUINTESSENCE PUBLISHING CO., LTD., pages: 48 - 49 |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2017069274A1 (ja) * | 2015-10-21 | 2017-12-14 | 株式会社トクヤマデンタル | 硬化性組成物及び歯科用充填修復材料 |
US10758457B2 (en) | 2015-10-21 | 2020-09-01 | Tokuyama Dental Corporation | Curable composition and dental filling restorative material |
JP2022097572A (ja) * | 2015-11-30 | 2022-06-30 | 株式会社松風 | 多層歯科切削加工用レジン材料の製造方法 |
CN107033285A (zh) * | 2015-11-30 | 2017-08-11 | 株式会社松风 | 多层牙科切削加工用树脂材料 |
JP2021054847A (ja) * | 2015-11-30 | 2021-04-08 | 株式会社松風 | 多層歯科切削加工用レジン材料の製造方法 |
JP7033641B2 (ja) | 2015-11-30 | 2022-03-10 | 株式会社松風 | 多層歯科切削加工用レジン材料の製造方法 |
JP2022051798A (ja) * | 2015-11-30 | 2022-04-01 | 株式会社松風 | 多層歯科切削加工用レジン材料 |
JP2017105764A (ja) * | 2015-11-30 | 2017-06-15 | 株式会社松風 | 多層歯科切削加工用レジン材料 |
JP7130163B2 (ja) | 2015-11-30 | 2022-09-02 | 株式会社松風 | 多層歯科切削加工用レジン材料の製造方法 |
JP7300238B2 (ja) | 2015-11-30 | 2023-06-29 | 株式会社松風 | 多層歯科切削加工用レジン材料 |
JP2018095620A (ja) * | 2016-12-15 | 2018-06-21 | 株式会社トクヤマデンタル | 歯科用樹脂複合材料 |
US11273104B2 (en) | 2017-03-06 | 2022-03-15 | Tokuyama Dental Corporation | Photocurable composition and dental restoration filling material |
JP7422994B2 (ja) | 2019-11-26 | 2024-01-29 | 株式会社トクヤマデンタル | 歯科用硬化性組成物 |
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