氰基丙烯酸盐增强口腔石膏模型强度的研究  

Strengthening a dental gypsum model by infiltration of cyanoacrylate

作　　者：魏焱[1] 高原[1] 吕锦[1] 王斌[1] 刘劲松[2] 

机构地区：[1]成都市第一人民医院口腔科,成都610041 [2]温州医科大学附属口腔医院口腔修复科,温州325027

出　　处：《华西口腔医学杂志》2014年第3期229-232,共4页West China Journal of Stomatology

基　　金：国家自然科学基金资助项目(81371182;81271186);浙江省自然科学基金资助项目(LY13H140005;Y2110400);浙江省卫生厅一般科研基金资助项目(2013KYA124)

摘　　要：目的探索一种用氰基丙烯酸盐强化石膏材料的简单方法,并研究氰基丙烯酸盐溶液的浓度对牙科石膏材料强度的影响。方法将标准石膏样本制备成35 mm×4 mm×4 mm的长条形;将氰基丙烯酸正丁酯制成20%和30%的溶液并测定溶液黏度。将干燥后的牙科石膏样本浸入氰基丙烯酸正丁酯溶液中8 h,再置于室温下干燥。检测样品的弹性模量、断裂韧性、抗压强度、布氏硬度、双轴强度,所得的数据采用OriginPro 8软件进行统计分析。结果黏性测定表明该溶液为牛顿流体,48 h内黏性小幅上升,但在室温下仍接近水,可用于浸润石膏,加强其强度。浸润氰基丙烯酸盐溶液的石膏具有良好的理化性能,石膏的双轴强度、断裂韧性、抗压强度和布氏硬度分别提高了39%、30%、63%和18%。结论氰基丙烯酸盐可以提高石膏模型强度,具有潜在的临床应用价值。Objective To explore a simple but novel method of strengthening gypsum material by cyanoacrylate infiltration. To evaluate the influence of cyanoacrylate on the mechanical properties of dental gypsum models. Methods Gypsum specimens were polished to the dimension of 35 mm×4 mm×4 mm. Butyl-cyanoacrylate was diluted with chloroform at different concentrations, namely 20% and 30% cyanoacrylate. Gypsum specimens were infiltrated by diluting one component of cyanoacrylate at different concentrations for 8 h and then dried for analysis. The changes in elastic modulus, fracture toughness, compressive strength, biaxial strength, brinell hardness were measured. The data were analyzed using software OriginPro 8. Results The viscosity measurements indicated that diluted cyanoacrylate were Newtonian fluids and the viscosity increased slightly within the 48 hours of preparation but still similar as water at room temperature, which could be used to infiltrating gypsum. The gypsum infiltrated with cyanoacrylate exhibited good physicochemical properties. The biaxial strength, fracture toughness, compressive strength and brinell hardness of the gypsum were improved by 39%, 30%, 63% and 18%, respectively. Conclusion Cyanoacrylate can significantly improve the strength of gypsum model which indicates the potential clinical application.

关 键 词：氰基丙烯酸盐 石膏 机械性能 强化 

分 类 号：R783.1[医药卫生—口腔医学]