Three-unit reinforced polyetheretherketone composite FDPs: Influence of fabrication method on load-bearing capacity and failure types

被引：121
作者：
Stawarczyk, Bogna [1 ]
Eichberger, Marlis [1 ]
Uhrenbacher, Julia [1 ]
Wimmer, Timea [1 ]
Edelhoff, Daniel [1 ]
Schmidlin, Patrick R. [2 ]
机构：
[1] Univ Munich, Sch Dent, Dept Prosthodont, D-80336 Munich, Germany
[2] Univ Zurich, Ctr Dent Med, Clin Prevent Dent Periodontol & Cariol, CH-8032 Zurich, Switzerland
来源：
DENTAL MATERIALS JOURNAL | 2015年 / 34卷 / 01期
关键词：
PEEK/C; FDPs; CAD/CAM; press technique; fracture load; FIXED DENTAL PROSTHESES; FATIGUE RESISTANCE; 2-BODY WEAR; RESIN; RETENTION; BLOCKS; DESIGN; FORCE;
D O I：
10.4012/dmj.2013-345
中图分类号：
R78 [口腔科学];
学科分类号：
1003 ;
摘要：
To investigate the influence of different fabrication methods of three-unit reinforced polyetheretherketone composite (PEEK/C) fixed dental prostheses (FDPs) on fracture load. Forty-five three-unit anatomically supported PEEK/C FDPs were fabricated as follows: i. milled using a CAD/CAM system from an industrially fabricated PEEK/C blank, ii. pressed from industrially fabricated PEEK/C pellets, and iii. pressed from granular PEEK/C. Fracture load was measured and data were statistically analysed (p<0.05). CAD/CAM fabricated FDPs (2,354 N) presented a higher mean fracture load than those pressed from granular PEEK/C material (1,738 N) (p<0.001). CAD/CAM milled FDPs and those pressed from PEEK/C-pellets showed spontaneous and brittle fractures near the pontic without deformation of the FDP. In contrast, granulate pressed FDPs showed some plastic deformation without fracture. CAD/CAM fabricated FDPs. and FDPs pressed from PEEK/C pellets showed higher Weibull moduli compared to FDPs pressed in granular form. Industrial pre-pressing of blanks (CAD/CAM/ pellet) increased the stability and reliability of PEEK restorations.
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页码：7 / 12
页数：6
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