• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Journal of Prosthetic Dentistry >Strength comparison of four techniques to secure implant attachment housings to complete dentures
【24h】

Strength comparison of four techniques to secure implant attachment housings to complete dentures

机译：四种技术的强度比较，可将种植体附着物固定在完整的假牙上

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Statement of problem Implant overdentures become thinner and weaker after direct transfer of implant attachment housings. While much has been published on denture repair, these data do not directly apply to implant overdentures because the introduction of a metal housing changes the character of the repair. It is desirable to make a strong repair to avoid prosthesis fracture. Purpose The purpose of this study was to compare the flexural strengths of 4 different methods for chairside direct transfer of implant attachment housings. Material and methods Eighty 11.5 × 9.1 × 39 mm heat-polymerized acrylic resin blocks were processed, assessed for porosities, and polished. An 8.5 mm diameter hole was drilled to a depth of 5 mm in the center of each block. Attachment housings were set into the bases with 4 different repair materials: autopolymerized acrylic resin (APAR), light-polymerized acrylic resin (LPAR), autopolymerized acrylic resin with silanated attachment housings (APSAH), and light-polymerized acrylic resin with silanated attachment housings (LPSAH). Blocks were immersed in water for 30 days in an incubator. A 3-point bend test was done in a universal testing machine, and load to fracture was recorded (MPa). Results were compared with 2-way ANOVA (α=.05). Results APSAH had the highest mean flexural strength at fracture (863.1 ±87 MPa) as compared to APAR (678.4 ±72.4 MPa), LPAR (550.9 ±119.3 MPa), and LPSAH (543.2 ±100.8 MPa). A comparison among the 4 groups showed that there were significant differences in maximum flexural strength (P<.001). The mean maximum strength of autopolymerized acrylic resin groups was significantly higher than light-polymerized acrylic resin groups. Silanation increased strength significantly compared to nonsilanated groups. Conclusions The flexural strength of autopolymerized acrylic resin with silanated attachment housings was significantly higher than autopolymerized acrylic resin alone, light-polymerized acrylic resin alone, or light-polymerized acrylic resin with silanated attachment housings. Autopolymerized acrylic resin produced stronger constructs than light-polymerized materials.
机译：问题陈述在直接转移植入物附件外壳后，植入物覆盖义齿变得越来越薄。尽管有关义齿修复的文献很多，但这些数据并不直接适用于种植义齿，因为引入金属外壳会改变义齿的特性。希望进行强力修复以避免假体断裂。目的这项研究的目的是比较四种不同方法在椅子旁直接转移种植体附着壳体的抗弯强度。材料和方法加工了80个11.5×9.1×39 mm热聚合丙烯酸树脂块，评估了孔隙率并进行了抛光。在每个块的中心钻一个直径为8.5毫米的孔，深度为5毫米。附件外壳使用4种不同的维修材料固定在底座中：自动聚合丙烯酸树脂（APAR），轻聚合丙烯酸树脂（LPAR），具有硅烷化附件外壳的自动聚合丙烯酸树脂（APSAH）和具有硅烷化附件外壳的轻聚合丙烯酸树脂（LPSAH）。将块在培养箱中浸入水中30天。在通用试验机上进行了三点弯曲试验，并记录了断裂载荷（MPa）。将结果与2通方差分析（α= .05）进行比较。结果与APAR（678.4±72.4 MPa），LPAR（550.9±119.3 MPa）和LPSAH（543.2±100.8 MPa）相比，APSAH的断裂平均抗弯强度最高（863.1±87 MPa）。 4组之间的比较显示最大弯曲强度存在显着差异（P <.001）。自聚合丙烯酸树脂基团的平均最大强度显着高于轻聚合丙烯酸树脂基团。与未硅烷化的组相比，硅烷化可显着提高强度。结论带有硅烷化连接壳体的自聚合丙烯酸树脂的弯曲强度明显高于单独的自聚丙烯酸树脂，单独的轻聚丙烯酸树脂或带有硅烷化连接壳体的轻聚合丙烯酸树脂。与光聚合材料相比，自聚合丙烯酸树脂产生的结构更坚固。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号