Characterization and optimization of micro-machining of dental implants, screws and pillars

牙种植体、螺钉和牙柱微加工的表征和优化

• 批准号: 474832-2014
• 负责人: Nganbe, Michel
• 金额: $ 1.82万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=565104
• 关键词: Characterization; optimization; micro; machining; dental

Milident has been offering cutting-edge products, services and techniques to dental care providers for over 20 years. In recent years, fierce market competition is putting Milident under enormous pressure to offer higher quality and customised/personalized products at lower competitive prices. However, there is currently only one Canadian manufacturer of high-precision key dental components such as pillars. Therefore, they mostly have to be imported at extremely high prices. To address this problematic, Milident is expanding its capabilities to innovative micro-machining of dental pillars, screws and implants. In-house production is estimated to yield a substantial costs reduction by over factor 100 as compared to imported components. A major step in this venture was the recent purchase of a sophisticated, innovative Swiss, CAD/CAM micro-milling machine. Broaching or shape forming is the most critical step in the machining process as it can involve major deformations close to or even beyond the materials plasticity limit. This can lead to compromised performance and durability as well as to pre-damage of the dental components. The proposed project will provide Milident the critical expertise and support to achieve its goal. It will help develop an advanced manufacturing process as well as stringent quality control and assurance procedures. The initial Titanium rods, blanks and prototypes manufactured using well-defined sets of micro-machining parameters will be comparatively investigated. Microstructure changes and potential pre-damages during fabrication will be studied using optical and scanning electron microscopy. Tensile tests on the initial Ti rods will allow establishing the material deformation behaviour and limits. Vickers and Rockwell hardness tests will enable studying work hardening during micro-machining. This venture will make Milident the first manufacturer of high-precision key dental

20多年来，Milident一直为牙科保健提供者提供尖端的产品、服务和技术。近年来，激烈的市场竞争使Milident面临巨大的压力，需要以更低的价格提供更高质量和定制/个性化的产品。然而，目前只有一家加拿大制造商生产高精度的关键牙科部件，如支柱。因此，它们大多必须以极高的价格进口。为了解决这个问题，Milident正在扩展其对牙柱、螺钉和种植体的创新微加工能力。据估计，与进口部件相比，内部生产可大幅降低成本100倍以上。该合资企业的一个重要步骤是最近购买了一台先进的、创新的瑞士CAD/CAM微型铣床。拉削或成形是加工过程中最关键的步骤，因为它可能涉及接近甚至超过材料塑性极限的主要变形。这可能导致性能和耐久性受损以及牙科部件的预损坏。拟议项目将为Milident实现其目标提供关键的专业知识和支持。这将有助于开发先进的制造工艺以及严格的质量控制和保证程序。将对使用定义明确的微加工参数组制造的初始钛棒、坯料和原型进行比较研究。将使用光学和扫描电子显微镜研究制造过程中的微观结构变化和潜在的预损伤。初始钛棒的拉伸试验将允许确定材料变形行为和限值。维氏和洛氏硬度测试将使研究加工硬化过程中的微加工。该合资企业将使Milident成为第一家高精度牙科钥匙制造商