【摘要】：聚甲基丙烯酸甲酯具有良好的理化性能及易于加工成型等優(yōu)點(diǎn)，被廣泛應(yīng)用于口腔義齒樹脂基托的制作。義齒基托樹脂根據(jù)其固化方式不同可分為三大類:加熱固化型、室溫固化型和光固化型。其中，加熱固化型基托樹脂是最常用的基托材料。 義齒基托樹脂長期暴露在口腔環(huán)境中，會(huì)出現(xiàn)不同程度的著色及變色影響修復(fù)效果。義齒樹脂基托顏色的改變是材料老化和損壞的指征,也是人們更換義齒最常見的原因之一。此外，義齒樹脂基托在口腔環(huán)境中具有一定的吸水性和溶解性，而有研究發(fā)現(xiàn)材料的著色與水分子的吸收有關(guān)，水分子可作為載體攜帶染色劑，因此，樹脂基托的吸水值及溶解值較高會(huì)加重材料著色，并影響義齒材料的尺寸穩(wěn)定性、力學(xué)性能和生物安全性等性能，嚴(yán)重影響到基托的品質(zhì)及患者的健康。 本研究合成了一種有機(jī)無機(jī)雜化膜。由正硅酸乙酯和縮水甘油醚基丙基三甲氧基硅烷共水解縮合制得雜化硅溶膠；由甲基丙烯酸甲酯、丙烯酸和甲基丙烯酸縮水甘油酯共聚制得聚合物。兩者利用KH560和GMA中的環(huán)氧基團(tuán)進(jìn)行交聯(lián)，形成具有互穿網(wǎng)絡(luò)結(jié)構(gòu)的雜化膜。然后，將雜化膜應(yīng)用在義齒樹脂基托表面，對(duì)膜層的紅外光譜、鉛筆硬度、附著力和抗破裂性等進(jìn)行表征。 選取4種常用的熱凝義齒樹脂基托材料制作樹脂試片，每種試片隨機(jī)分為覆膜實(shí)驗(yàn)組和對(duì)照組。分別對(duì)實(shí)驗(yàn)組和對(duì)照組試片的吸水值、溶解值及光澤度值進(jìn)行測(cè)試；并對(duì)實(shí)驗(yàn)組和對(duì)照組試片在不同有色溶液中浸泡不同時(shí)間后的顏色變化ΔE進(jìn)行測(cè)試，對(duì)實(shí)驗(yàn)結(jié)果進(jìn)行統(tǒng)計(jì)學(xué)分析，以探討有機(jī)無機(jī)雜化膜對(duì)義齒樹脂基托性能的影響。 實(shí)驗(yàn)結(jié)果表明，有機(jī)無機(jī)雜化涂料聚合完全，鉛筆硬度可達(dá)到5H，與樹脂試片的附著力及抗破裂性達(dá)到最高等級(jí)；實(shí)驗(yàn)組吸水值及溶解值顯著低于對(duì)照組（P0.05）;實(shí)驗(yàn)組光澤度值顯著高于對(duì)照組（P0.05）；85%實(shí)驗(yàn)組樹脂試片的ΔE值顯著低于對(duì)照組（P0.05），且在對(duì)照組中，樹脂品牌、浸泡溶液以及浸泡時(shí)間三者之間存在交互作用，而實(shí)驗(yàn)組，樹脂品牌、浸泡溶液以及浸泡時(shí)間三者之間的不存在交互作用。 由此可得出結(jié)論：有機(jī)無機(jī)雜化膜不僅具有良好的力學(xué)性能，還降低了基托樹脂的吸水值和溶解值，提高了基托樹脂的顏色穩(wěn)定性及光澤度，最終提高基托綜合性能。
[Abstract]:Poly (methyl methacrylate) has been widely used in the manufacture of dental denture resin base because of its good physical and chemical properties and easy processing and molding. Denture base resin can be divided into three categories according to its curing mode: heating curing, room temperature curing and light curing. Among them, the heating curing base resin is the most commonly used base material. When denture base resin is exposed to oral environment for a long time, different degree of coloring and discoloration will affect the effect of restoration. The change of color of denture resin base is the indication of material aging and damage, and it is also one of the most common reasons for replacement of denture. In addition, denture resin base has a certain water absorption and solubility in oral environment. However, it has been found that the coloring of materials is related to the absorption of water molecules, which can be used as carriers to carry dye agents. The higher water absorption and dissolution value of the resin base will aggravate the coloring of the material, and affect the dimensional stability, mechanical properties and biological safety of the denture material, and seriously affect the quality of the base and the health of the patients. In this study, an organic and inorganic hybrid membrane was synthesized. Hybrid silica sol was synthesized by co-hydrolysis and condensation of ethyl orthosilicate and glycidyl ether propyl trimethoxysilane, and the polymer was synthesized by copolymerization of methyl methacrylate, acrylic acid and glycidyl methacrylate. They were crosslinked by epoxy groups in KH 560 and GMA to form hybrid membranes with interpenetrating network structure. Then, the hybrid film was applied to the denture resin base surface to characterize the infrared spectrum, pencil hardness, adhesion and fracture resistance of the film. Four kinds of common thermosetting denture resin base materials were selected to make resin specimens. Each specimen was randomly divided into two groups: the film coated experimental group and the control group. The water absorption value, dissolution value and gloss value of the experimental group and the control group were tested respectively, and the color change 螖 E of the experimental group and the control group were tested after immersion in different colored solution for different time. The effect of organic and inorganic hybrid film on the properties of denture resin base was analyzed statistically. The results showed that the organic and inorganic hybrid coatings were polymerized completely, the hardness of pencils could reach 5H, and the adhesion and cracking resistance of the coatings with resin were the highest. The values of water absorption and solubility in the experimental group were significantly lower than those in the control group (P0.05), the gloss value of the experimental group was significantly higher than that of the control group (P0.05), and the 螖 E value of the resin specimen of the experimental group was significantly lower than that of the control group (P0.05). There was interaction between immersion solution and soaking time, but there was no interaction among experimental group, resin brand, immersion solution and soaking time. It is concluded that the organic-inorganic hybrid film not only has good mechanical properties, but also reduces the water absorption and dissolution value of the base resin, improves the color stability and glossiness of the base resin, and finally improves the comprehensive properties of the base resin.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：R783.6

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本文編號(hào)：2136155