聚醚醚酮套筒冠内冠固位力及耐磨损性能的对比研究  

Comparative Study on Retention and Wear Resistance of PEEK Conical Telescope Inside Crowns

作　　者：艾昕 陈卓[1] 韩琳 邱晓霞 AI Xin;CHEN Zhuo;HAN Lin;QIU Xiaoxia(Department of Restorative Dentistry,Zhengzhou University First Affiliated Hospital and Henan Provincial Stomatological Hospital,Zhengzhou 450052,China)

机构地区：[1]郑州大学第一附属医院暨河南省口腔医院修复科,河南郑州450052

出　　处：《口腔医学研究》2025年第4期327-331,共5页Journal of Oral Science Research

基　　金：河南省高等学校重点科研项目(编号:18A320055)。

摘　　要：目的:比较聚醚醚酮(polyetheretherketones,PEEK)内冠与PEEK、纯钛及钴铬合金外冠在长期使用后的固位力保持以及磨损情况,探讨最适合于PEEK内冠的外冠材料。方法:制作低合金钢基牙代型32个,PEEK内冠27个、钴铬合金内冠9个、PEEK外冠8个、纯钛(Titanium,Ti)外冠8个、钴铬合金外冠16个,将基牙代型及内外冠随机分为4组:A组内外冠均为PEEK;B组内冠为PEEK,外冠为纯钛;C组内冠为PEEK,外冠为钴铬合金;D组内外冠均为钴铬合金。将内冠粘接于基牙代型上,完全就位外冠并包埋。使用电子万能试验机进行模拟摘戴循环试验,测量开始循环前、循环1000次、2000次、3000次、4000次、5000次、10000次时内外冠分离的最大脱位力,并记录分析。循环实验前后分别称重并记录试验前后内外冠的质量,计算相对质量损耗,并使用电镜扫描观察循环前后内冠的外表面形态。结果:(1)固位力结果:A、B、C、D 4组不同循环次数时的固位力值差异具有统计学意义(P<0.05),各组多次循环后的固位力值变化具有统计学意义(P<0.05)。A、B、C组固位力值随着循环次数的增加先上升后下降,D组固位力呈现下降趋势。(2)相对质量损耗:在循环摘戴10000次后,4组内外冠相对质量损耗有统计学差异(P<0.05)。(3)电镜扫描观察:A组粗糙度增加,但未见明显破坏;B组、C组表面可见明显破坏;D组表面较A、B、C 3组光滑。结论:模拟循环摘戴10000次后,PEEK内冠与金属外冠联合使用可以获得不低于钴铬合金内外冠的固位力;内冠选用PEEK制作时,使用纯钛制作外冠可以获得较低的内冠磨损以及更高的固位力。Objective:To compare the retention force and wear of PEEK inner crown with PEEK,titanium,and cobalt-chromium alloy outer crown after long-term use.Methods:A total of 32 low-alloy steel-based dental crowns,including 27 PEEK inner crowns,9 cobalt-chromium alloy inner crowns,8 PEEK outer crowns,8 pure titanium outer crowns,and 16 cobalt-chromium alloy outer crowns,were randomly divided into four groups.The inner and outer crowns of group A were PEEK.Group B was PEEK for the inner crown and pure titanium for the outer crown.Group C was PEEK for the inner crown and cobalt-chromium alloy for the outer crown.The inner and outer crowns of Group D were cobalt-chromium alloys.The inner crown was glued to the abutment type,the outer crown was completely placed and separately embedded.The simulated removal cycle test was carried out using an electronic universal testing machine,and the maximum dislocation force of the inner and outer crown separation before the start of the cycle,1000 cycles,2000 cycles,3000 cycles,4000 cycles,5000 cycles,and 10,000 cycles was measured,and the analysis was recorded.The mass of the inner and outer crowns before and after the cycle experiment was weighed and recorded,the relative mass loss was calculated,and the outer surface morphology of the inner crowns before and after the cycle was observed by scanning electron microscopy.Results:The retention force values of groups A,B,C,and D under different cycles had statistical significance(P<0.05),and the retention force values of each group after multiple cycles had statistical significance(P<0.05).The retaining force of group A,B,and C increased first and then decreased with the increase of the number of cycles,and the retaining force of group D showed a downward trend.After 10,000 cycles of removal and wearing,the relative mass loss of internal and external crowns in the four groups was statistically different(P<0.05).Roughness of Group A was increased,but no obvious damage.However,the surface of group B and Group C was obviously damaged.The surf

关 键 词：套筒冠 固位力 耐磨损性能 聚醚醚酮 

分 类 号：R783.3[医药卫生—口腔医学]