不同含氟比例弹性义齿材料的力学性能比较  

A comparative study on the mechanical properties of flexible denture materials containing different fluoride concentrations

作　　者：唐震宇 张哲 张伟一 Tang Zhen-yu;Zhang Zhe;Zhang Wei-yi(The Second Affiliated Hospital of Guilin Medical University, Guilin 541001, Guangxi Zhuang Autonomous Region, China;College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, Guangxi Zhuang Autonomous Region, China;Guilin Stomatological Hospital, Guilin 541004, Guangxi Zhuang Autonomous Region, China)

机构地区：[1]桂林医学院第二附属医院,广西壮族自治区桂林市541199 [2]桂林理工大学材料科学与工程学院,广西壮族自治区桂林市541004 [3]桂林市口腔医院,广西壮族自治区桂林市541004

出　　处：《中国组织工程研究》2017年第30期4806-4811,共6页Chinese Journal of Tissue Engineering Research

基　　金：广西科学研究与技术开发计划项目资助(桂科攻14124004-1-10);广西桂林市科技攻关计划项目资助(20140120-8-1;2016012709)~~

摘　　要：背景:患者长期戴用弹性义齿修复体后,会增加龋病和牙周病、局部义齿性口炎等疾病的发病率。在材料中添加氟化物可预防和降低上述疾病的发病率,目前国内外在口腔材料中添加氟化物防龋的研究较多,但尚无在弹性义齿材料中添加单氟磷酸钠并进行相关力学性能测试研究的相关报道。目的:评价不同含氟比例弹性义齿材料的力学性能。方法:取弹性义齿材料,分别制成长80 mm、宽51 mm、厚1 mm,长20 mm、宽5 mm、厚5 mm,长25 mm、宽2 mm、厚2 mm尺寸,每种尺寸60个试件,每组尺寸内按照添加单氟磷酸钠的质量比再分为6组,单氟磷酸钠质量比分别为0(对照组)、3%、5%、10%、15%、20%,检测试件的扯断强度、弯曲强度及邵氏硬度。结果与结论:随着弹性义齿材料中单氟磷酸钠质量比例的增加,材料的扯断强度、弯曲强度及邵氏硬度值逐渐降低,当弹性义齿材料中单氟磷酸钠质量比例增加至10%时,材料的扯断强度、弯曲强度及邵氏硬度与对照组相比虽有所降低,但差异无显著性意义(P>0.05);当弹性义齿材料中单氟磷酸钠质量比例达到15%时,材料的扯断强度、弯曲强度均低于对照组(P<0.05);当弹性义齿材料中单氟磷酸钠质量比例达到20%时,材料的扯断强度、弯曲强度、邵氏硬度均低于对照组(P<0.05)。结果表明,单氟磷酸钠含量可影响弹性义齿材料的力学指标,10%是最佳加氟比例,高于此给氟量可改变弹性义齿材料的力学性能。BACKGROUND:Long-term use of flexible denture prosthesis will increase the incidence of caries and periodontal disease,and partial denture stomatitis.The addition of fluoride in the prosthesis material can prevent and reduce the incidence of these diseases.Currently,increasing research addresses the addition of fluoride into dental materials at home and abroad,but little is reported on the addition of sodium monofluorophosphate(Na2(PO3)F into flexible denture materials and on the relevant mechanical performance.OBJECTIVE:To evaluate the mechanical properties of flexible denture materials containing different fluoride concentrations.METHODS:Totally180elastic denture samples were made at the three different sizes of80mm×51mm×1mm(n=60),20mm×5mm×5mm(n=60),25mm×2mm×2mm(n=60).Then,elastic denture samples containing Na2(PO3)F0(control),3%,5%,10%,15%,20%were prepared in each size groups.The tensile strength,flexural strength and Shore A hardness of the samples were tested.RESULTS AND CONCLUSION:When the mass ratio of fluoride was up to10%,the tensile strength and flexural strength reduced a little(P>0.05).When the mass ratio of fluoride was up to15%,the tensile strength and flexural strength were significantly lower than those of non-fluoride samples(P<0.05).When the mass ratio of fluoride was up to20%,the tensile strength,flexural strength and Shore A hardness were significantly lower than those of non-fluoride samples(P<0.05).To conclude,Na2(PO3)F content has a significant effect on the tensile strength,flexural strength and Shore A hardness,and10%is the best proportion of Na2(PO3)F.The mechanical properties of fluoride-containing flexible denture materials will be changed if the mass ratio of fluoride is higher than10%.

关 键 词：生物材料 口腔生物材料 弹性义齿材料 力学机械性能 氟化物 无机盐 防龋 

分 类 号：R318[医药卫生—生物医学工程]