Hobkirk J A, Brouziotou-Davas E
Department of Prosthetic Dentistry, Eastman Dental Institute, London, UK.
J Oral Rehabil. 1996 Jun;23(6):386-91. doi: 10.1111/j.1365-2842.1996.tb00868.x.
The objectives of this study were to determine the effects on masticatory forces of using implant stabilized mandibular bridges with occlusal schemes providing either balanced or unbalanced articulation. The investigation was carried out in a group of six subjects who had dentate, or restored dentate maxillary arches and who used implantstabilized mandibular prostheses. Peak masticatory forces, chewing frequency and load rate were determined when chewing bread, carrots and nuts. The mean peak masticatory force varied markedly from subject to subject, and, together with the masticatory load rate were lowest when eating bread and highest when chewing nuts, with values for chewing carrots between the two. There was no detectable difference in mean peak masticatory force or load rates associated with chewing bread with the two occlusal schemes; however, these were lower with balanced occlusion when chewing nuts and carrots. The ranking of subjects in terms of mean peak masticatory force and load rate was consistent and peak load rates of up to 2000 N/sec were recorded. Chewing frequency was relatively consistent for a particular subject irrespective of the foodstuff.
本研究的目的是确定使用具有平衡或不平衡咬合方案的种植体支持的下颌桥对咀嚼力的影响。该研究在一组六名受试者中进行，这些受试者具有完整牙齿或已修复的上颌牙弓，并且使用种植体支持的下颌修复体。在咀嚼面包、胡萝卜和坚果时，测定峰值咀嚼力、咀嚼频率和负荷率。峰值咀嚼力的平均值在受试者之间差异显著，并且与咀嚼负荷率一起，在吃面包时最低，在咀嚼坚果时最高，咀嚼胡萝卜时的值介于两者之间。两种咬合方案咀嚼面包时，平均峰值咀嚼力或负荷率没有可检测到的差异；然而，在咀嚼坚果和胡萝卜时，平衡咬合时的这些值较低。受试者在平均峰值咀嚼力和负荷率方面的排名是一致的，并且记录到的峰值负荷率高达2000 N/秒。对于特定受试者，无论食物如何，咀嚼频率相对一致。
