Rangert B R, Sullivan R M, Jemt T M
Nobel Biocare AB, Göteborg, Sweden.
Int J Oral Maxillofac Implants. 1997 May-Jun;12(3):360-70.
There are inherent biomechanical differences in the implant treatment of completely edentulous arches and posterior partially edentulous segments. The partial prosthesis does not benefit from cross-arch stabilization and is, therefore, more susceptible to bending loads. Because of the difference in mobility between teeth and implants, implants may carry a major share of load when mixed with teeth in the same quadrant. However, the frequency of implant overload in posterior partial restorations is low, and, with appropriate treatment planning, overload in these situations is almost always preventable. A checklist procedure is proposed to help the clinician enumerate and evaluate deleterious load factors. By screening patients for such factors in advance, the clinician may identify and avoid potential overload situations when conceiving and fabricating implant-supported posterior partial prostheses. A second checklist, for use at follow-up appointments, lists alarm factors that serve as an early warning of overload once the prosthesis is in place.
在全口无牙弓和后部部分无牙区段的种植治疗中存在固有的生物力学差异。局部义齿无法从跨弓稳定中获益，因此更容易受到弯曲载荷的影响。由于牙齿和种植体之间的移动性差异，当种植体与同一象限内的牙齿混合时，种植体可能承担大部分载荷。然而，后部局部修复中种植体过载的频率较低，并且通过适当的治疗计划，在这些情况下的过载几乎总是可以预防的。提出了一种检查表程序，以帮助临床医生列举和评估有害的载荷因素。通过提前对患者进行此类因素的筛查，临床医生在构思和制作种植体支持的后部局部义齿时，可以识别并避免潜在的过载情况。第二个检查表用于随访预约，列出了一旦义齿就位可作为过载早期预警的警示因素。
