Teeth whitening functional materials delivery system
A technology of active materials and teeth, which is applied in the field of tooth whitening compositions, can solve the problems of waterproof film foreign body sensation, not easy to deliver whitening active materials, etc.
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Embodiment 1
[0038] Example 1: Preparation of tooth whitening composition
[0039] 1:1 Selection of tooth-adhesive polymers and addition of tooth-whitening active materials
[0040] 0.4 g of various adhesive polymers (carbomer 934, carbomer 504, carbomer 505, carbomer 501, carbomer 940, and carbomer 941) (SIMITOMO SEIKA company, Japan) (Noveon, U.S.) were dissolved in 4 ml of 1N NaOH, and then left Let stand for 24 hours. 3 ml of stabilizer-glycerin and 0.1 ml of hydrophobic surfactant-Span 80 (Sigma chemical company, USA) were added thereto.
[0041] As a tooth whitening active material, 8.05% by weight of carbamide peroxide was added thereto based on the total weight of the composition to make a whitening gel. 0.1 g of potassium nitrate with antiallergic effect and sodium citrate with whitening effect are added to the gel. In order to prevent the unstable hydrogen peroxide from decomposing, sodium stannate and sodium acid pyrophosphate are added thereto as stabilizers. In additio...
Embodiment 2
[0046] Example 2: Selection of surfactants suitable for tooth whitening products
[0047] In order to maintain the tooth whitening effect for a long time by avoiding contact with water and preventing the gel from being eroded by saliva in the oral cavity, a hydrophobic surfactant is added to the whitening gel.
[0048] Specifically, the whitening gel containing the same components except the hydrophobic surfactant was prepared in the same manner as in Example 1 using 0.4 g of an adhesive polymer, Carbomer 940 (Carbomer 940). preparation. To the whitening gel, various hydrophobic surfactants Tween 20 (polysorbate 20), Tween 60 (polysorbate 60), Tween 80 (polysorbate 80), propylene glycol and Span 80 were added and a whitening gel was obtained . Test the hydrogen peroxide release of the whitening gel.
[0049] Specifically, 2 ml of each sample was placed in a glass vial, and 1 ml of distilled water was added thereto. After 1 hour, an additional 0.5 ml of distilled water wa...
Embodiment 3
[0051] Example 3: Dental pulp damage according to the addition of different amounts of materials that promote the penetration of tooth whitening active materials dead teeth test
[0052] In order to determine the effect of the material for promoting the penetration of the tooth whitening active material, the material for promoting the penetration of the tooth whitening active material was added to the whitening gel prepared in Example 1-1 at a concentration equal to the total amount of the whitening gel. 0.5 wt%, 1 wt%, 2 wt% and 5 wt% by weight.
[0053] Teeth with pulp necrosis used in the experiment were provided by Seoul National University Dental Hospital. To clean the pulp necrotic tooth, the pulp necrotic tooth was placed in a beaker filled with distilled water, then cleaned 5 times in an ultrasonic generator, and subsequently dried.
[0054] In order to determine the effect of materials used to facilitate the penetration of tooth whitening active materials, penetr...
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Abstract
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