Fabrication of titanium removable dental prosthesis frameworks with a 2-step investment coating method.
Fabrication of titanium removable dental prosthesis frameworks with a 2-step investment coating method.
复制标题
采用两步熔模涂层法制造钛可摘牙假体框架。
DOI：
10.1016/s0022-3913(12)60098-5
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Okabe,Toru
中科院分区：
文献类型：
--
作者：
Koike,Mari;Hummel,SusanK;Ball,JohnD;Okabe,Toru
问题说明虽然已知纯钛具有良好的生物相容性，但需要具有更好强度的钛合金来制造临床上可接受的，部分可摘义齿（RDP）框架的机械性能。对RDP框架应用阶段性包埋技术进行了研究。材料和方法采用两种类型的模具材料：反应性较低的尖晶石化合物（Al 2 O3·MgO）和较便宜的SiO2基材料，用两步涂覆法对初步试铸件进行了包埋。测定了铸造Ti-5Al-5Cu合金的屈服强度、抗拉强度（n = 5）、弹性模量（n= 5）、伸长率（n=5）和硬度（n=8）。使用传统牙科X线摄影机检查了义齿框架初步试模铸件（n=2）的外观和内部孔隙率。铸造Ti-6Al-4V合金和商业纯钛（CP Ti）用作对照。采用单因素方差分析（α= 0.05）对力学性能数据进行统计分析。结果表明：铸造Ti-5Al-5Cu合金的屈服强度为851 MPa，硬度为356 HV。这些性能与铸造Ti-6Al-4V的性能相当，并且高于CP Ti的性能（P<0.05）。发现Ti-5Al-5Cu框架的丙烯酸树脂保留区域之一已不完全cast. CONCLUSIONSSThe铸造生物相容性实验Ti-5Al-5Cu合金具有高强度时，铸造与2步涂层方法。通过专门的研究来确定浇口设计对铸件质量的影响，可以生产用于临床试验的生物相容性Ti-5Al-5Cu RDP框架。
STATEMENT OF PROBLEMAlthough pure titanium is known to have good biocompatibility, a titanium alloy with better strength is needed for fabricating clinically acceptable, partial removable dental prosthesis (RDP) frameworks.PURPOSEThe mechanical properties of an experimental Ti-5Al-5Cu alloy cast with a 2-step investment technique were examined for RDP framework applications.MATERIAL AND METHODSPatterns for tests for various properties and denture frameworks for a preliminary trial casting were invested with a 2-step coating method using 2 types of mold materials: a less reactive spinel compound (Al2O3·MgO) and a less expensive SiO2-based material. The yield and tensile strength (n=5), modulus of elasticity (n=5), elongation (n=5), and hardness (n=8) of the cast Ti-5Al-5Cu alloy were determined. The external appearance and internal porosities of the preliminary trial castings of denture frameworks (n=2) were examined with a conventional dental radiographic unit. Cast Ti-6Al-4V alloy and commercially pure titanium (CP Ti) were used as controls. The data for the mechanical properties were statistically analyzed with 1-way ANOVA (α=.05).RESULTSThe yield strength of the cast Ti-5Al-5Cu alloy was 851 MPa and the hardness was 356 HV. These properties were comparable to those of the cast Ti-6Al-4V and were higher than those of CP Ti (P<.05). One of the acrylic resin-retention areas of the Ti-5Al-5Cu frameworks was found to have been incompletely cast.CONCLUSIONSThe cast biocompatible experimental Ti-5Al-5Cu alloy exhibited high strength when cast with a 2-step coating method. With a dedicated study to determine the effect of sprue design on the quality of castings, biocompatible Ti-5Al-5Cu RDP frameworks for a clinical trial can be produced.
登录
查看更多内容
影响因子：
14
作者：
Okazaki, Y;Gotoh, E
通讯作者：
Gotoh, E
人口老龄化和无牙颌状况对牙科护理服务的影响。
DOI：
10.1016/s0022-3913(98)70194-5
发表时间：
1998
期刊：
The Journal of prosthetic dentistry
影响因子：
--
作者：
Gordon W. Thompson;Phil S.J. Kreisel
通讯作者：
Phil S.J. Kreisel
影响因子：
4.6
作者：
Cecconi, BT;Koeppen, RG;Cecconi, ML
通讯作者：
Cecconi, ML
影响因子：
3.6
作者：
Takayama, Yasuko;Takishin, Norio;Hosoi, Toshio
通讯作者：
Hosoi, Toshio
磷酸盐粘合包埋材料对钛反应层和牙冠贴合的影响。
影响因子：
2.5
作者：
S. S. Rocha;Fabiane Nogueira;A. R. F. Pieralini;R. Ribeiro;G. Adabo
通讯作者：
G. Adabo