Mechanics in head and neck reconstruction

头颈重建的力学

• 批准号: 227632-2006
• 负责人: Raboud, Donald
• 金额: $ 1.46万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2007
• 资助国家: 加拿大
• 起止时间: 2007-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=366556
• 关键词: Mechanics; head; neck; reconstruction

When titanium implants are used to attached facial prosthesis and/or bone anchored hearing aids during facial reconstruction it is important that they maintain a solid connection with the underlying bone. Current medical imaging technologies  are unable to diagnose changes to this bone-implant interface, so other means must be used to determine the health of these implants.  A mechanical impact technique is being developed in which a small instrumented rod is used to monitor the accelerations which occur during an impact with an implant.  Mathematical models of the implant system are being developed to aid in interpreting the results of the impact while clinical trials are underway to evaluate the effectiveness of the technique. During orthodontic treatment, orthodontists apply continuous force systems to teeth to reposition them permanently with the dental arch to imporve occlusion.  Despite many years of practice and research, a clear understanding of the link between the force levels and the associated rate of tooth movement has not been achieved.  Controlled clinical trials are being developed to help address this important issue.  CT scans will be used to monitor changes in tooth position while the force systems applied and its effects on the supporting structures of the tooth are carefully scrutinized.

在面部重建过程中，当钛植入物用于连接面部假体和/或骨锚式助听器时，重要的是它们与下面的骨保持牢固的连接。目前的医学成像技术无法诊断这种骨-植入物界面的变化，因此，必须使用其他手段来确定这些植入物的健康状况。正在开发一种机械冲击技术，其中使用一个小的仪器杆来监测与植入物冲击期间发生的加速度。正在开发植入物系统的数学模型，以帮助解释植入物系统的结果。临床试验正在进行中，以评估该技术的有效性。在正畸治疗过程中，正畸医生对牙齿施加持续的力系统，使牙齿与牙弓永久重新定位，以改善咬合。尽管经过多年的实践和研究，目前还没有一个清晰的认识力水平和牙齿移动的相关速度之间的联系。对照临床试验正在开发，以帮助解决这一重要问题。CT扫描将用于监测牙齿位置的变化，同时仔细检查施加的力系统及其对牙齿支撑结构的影响。