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(申请人提供)：在这个项目中，将使用离子束辅助沉积(IBAD)将纳米晶陶瓷应用于正畸弓丝的表面，以减少滑动阻力。当托槽沿着金属丝滑入新的位置时，过大的滑动阻力会阻碍牙齿的移动，导致结果难以预测，并需要增加力量、治疗时间、“坐位时间”和患者成本。纳米晶IBAD陶瓷将减少摩擦，更重要的是，通过硬化弓丝，将消除发生在托槽和牙弓之间结合点的缺口，并加剧典型的粘滑运动轮廓。纳米晶形态也产生了具有更好韧性的表面，以承受磨损。在本项目中，将在圆形和矩形截面的CuNiTi和2Ti拱线上应用Al_2O_3、TiO_2和ZrO_2涂层，并在滑动抗拉试验中与未涂层的拱线进行比较。将确定适合不同处理阶段的最佳材料组合。应用坚韧、附着力低的低滑动阻力涂层将有效地将滑动阻力与拱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，这将为医生提供解决特定患者问题的新工具。 与公众健康相关：在这个项目中，纳米晶陶瓷将应用于正畸弓丝的表面，使用离子束辅助沉积来减少滑动阻力。当托槽沿线滑入新位置时，过大的滑动阻力会阻碍牙齿移动。这些陶瓷涂层将产生更可预测的结果，需要更少的力量，更短的治疗时间，并降低患者成本。