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

Milident多20多年来向牙科护理提供商提供最先进的产品，服务和技术。近年来，激烈的市场竞争使Milident承受着巨大的压力，以较低的价格提供更高质量和定制/个性化产品。但是，目前只有一家加拿大高精度关键牙科组件（例如支柱）的制造商。因此，它们主要必须以极高的价格进口。为了解决这个问题，Milident将其功能扩展到牙科支柱，螺丝和植入物的创新微型机械上。据估计，与进口组件相比，内部生产的成本将大幅降低100。这项合资企业的主要一步是最近购买了一款精致的创新瑞士，CAD/CAM微型磨机。吹式或形状形成是加工过程中最关键的步骤，因为它可能涉及靠近甚至超出材料可塑性极限的重大变形。这可能会导致性能和耐用性以及牙科组件的预损害。拟议的项目将为Milident提供关键的专业知识和支持，以实现其目标。它将有助于开发先进的制造过程以及严格的质量控制和保证程序。使用明确定义的微型播放参数制造的初始钛棒，毛坯和原型将进行相对研究。将使用光学和扫描电子显微镜研究制造过程中的显微结构变化和潜在的预损伤。对初始TI杆的拉伸测试将允许建立材料变形行为和限制。 Vickers和Rockwell硬度测试将使研究在微观播放过程中研究工作硬化。这项冒险将使Milident成为高精度钥匙牙齿的第一个制造商