Nano-Crystalline Ceramic Coatings for the Reduction of Sliding Resistance of Orth

降低滑动阻力的纳米晶陶瓷涂层

• 批准号: 8198677
• 负责人: JASON E BURNS
• 金额: $ 11.42万
• 依托单位: SPIRE CORPORATION
• 依托单位国家: 美国
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-07-01 至 2012-09-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8198677
• 关键词: Address; Adhesions; Behavior; Benchmarking; Binding; Ceramics; Chemical Structure; Deposition; Development; Failure; Film; Friction; Hardness; Ions; Left; Measurement; Measures; Mechanics; Modeling; Morphology; Motion; Orthodontic; Orthodontic Brackets; Outcome; Patients; Performance; Phase; Positioning Attribute; Property; Resistance; Running; Scanning Electron Microscopy; Simulate; Slide; Spectrum Analysis; Stress; Structure; Surface; Testing; Thick; Time; Tooth structure; Work; X-Ray Crystallography; cost; design; improved; in vitro testing; nano; notch protein; programs; stoichiometry; success; tool

DESCRIPTION (provided by applicant): In this program, nano-crystalline ceramics will be applied to the surface of orthodontic archwires using ion beam assisted deposition (IBAD) to reduce sliding resistance. Excessive sliding resistance works against tooth motion as the bracket slides along the wire into a new position, resulting in less predictable outcomes, and requiring increased force, treatment time, "chair time", and patient costs. Nano-crystalline IBAD ceramics will reduce friction in the couple, and more importantly, through hardening the arch wire, will eliminate the notching which occurs at binding points between the bracket and the wire, and exacerbates the typical stick-slip motion profile. Nano-crystalline morphology also yields a surface with improved toughness for withstanding wear. In this program, Al2O3, TiO2, and ZrO2 coatings will be applied to round and rectangular cross-section CuNiTi and 2Ti archwires, and compared to uncoated wires in a sliding resistance tensile test. The best material combinations appropriate for various treatment phases will be determined. Application of tough, adherent low sliding resistance coatings will effectively decouple sliding resistance from other mechanical properties of the arch wire. New combinations of mechanical and sliding properties will be made possible which will provide the practitioner with new tools for solving specific patient problems. PUBLIC HEALTH RELEVANCE: In this program, nano-crystalline ceramics will be applied to the surface of orthodontic arch wires using ion beam assisted deposition to reduce sliding resistance. Excessive sliding resistance works against tooth motion as the bracket slides along the wire into a new position. These ceramic coatings will produce more predictable outcomes, requiring less force, shorter treatment time, and decreased patient costs.

描述（由申请人提供）：在该项目中，将使用离子束辅助沉积（IBAD）将纳米晶体陶瓷应用于正畸弓丝表面，以降低滑动阻力。当托槽沿着金属丝滑动到新位置时，过大的滑动阻力阻碍牙齿运动，导致较难预测的结果，并且需要增加的力、治疗时间、“椅子时间”和患者成本。 纳米晶IBAD陶瓷将减少对中的摩擦，更重要的是，通过硬化弓丝，将消除在托槽和弓丝之间的结合点处发生的缺口，并加剧典型的粘滑运动轮廓。纳米晶体形态还产生具有改进的韧性以抵抗磨损的表面。 在该项目中，将在圆形和矩形横截面CuNiTi和2Ti弓丝上涂覆Al2O3、TiO2和ZrO2涂层，并在抗滑动拉伸试验中与无涂层弓丝进行比较。将确定适用于各个处理阶段的最佳材料组合。 应用坚韧、粘附性低的滑动阻力涂层将有效地将滑动阻力与弓丝的其他机械性能分离。机械和滑动性能的新组合将成为可能，这将为从业者提供解决特定患者问题的新工具。 公共卫生相关性：本计画将利用离子束辅助沉积技术，将奈米微晶陶瓷应用于矫正弓丝表面，以降低滑动阻力。当托槽沿着金属丝滑动到新位置时，过大的滑动阻力会阻碍牙齿运动。这些陶瓷涂层将产生更可预测的结果，需要更少的力，更短的治疗时间，并降低患者成本。