Ow R K, Carlsson G E, Karlsson S
Department of Restorative Dentistry, National University of Singapore, Singapore.
J Oral Rehabil. 1998 Nov;25(11):821-9. doi: 10.1046/j.1365-2842.1998.00325.x.
This study evaluated a sieve method for measuring masticatory performance and determined the associations between masticatory performance and masticatory mandibular movements. Ten dentate adults and three complete denture-wearing subjects participated in the study. The masticatory performance indices for these subjects were determined after a 10 s masticatory sequence and another sequence that ended at the swallowing threshold. Almond was used as the test food and almond fragments were sized using a standard 0.65 mm square size brass wire sieve. Masticatory mandibular movements were simultaneously recorded by an optoelectronic device. The reproducibility of the masticatory performance tests was good (r = 0.98 and 0.82 for the 10 s and swallowing threshold test indices, respectively). The masticatory performance indices were markedly different between dentate and denture-wearing subjects. The 10 s masticatory performance index in the dentate subjects, showed moderate to rather strong correlation with all parameters of mandibular velocity (r = 0.6-0.7). The 10 s index also showed a strong negative correlation to the duration of the occlusal level phase and the total duration of the chewing cycle (r = -0.7 to -0.8) in the dentate subjects. This study confirms that masticatory performance levels are relatively stable and associated with the efficacy of specific masticatory mandibular movement parameters.
本研究评估了一种测量咀嚼性能的筛分方法，并确定了咀嚼性能与咀嚼下颌运动之间的关联。十名有牙成年人和三名佩戴全口义齿的受试者参与了该研究。在10秒的咀嚼过程以及以吞咽阈值结束的另一个过程之后，确定了这些受试者的咀嚼性能指标。使用杏仁作为测试食物，并使用标准的0.65毫米方形黄铜丝筛对杏仁碎片进行筛分。通过光电设备同时记录咀嚼下颌运动。咀嚼性能测试的重复性良好（10秒和吞咽阈值测试指标的r分别为0.98和0.82）。有牙受试者和佩戴义齿受试者的咀嚼性能指标明显不同。有牙受试者的10秒咀嚼性能指标与下颌速度的所有参数呈中度至较强的相关性（r = 0.6 - 0.7）。10秒指标在有牙受试者中与咬合水平阶段的持续时间和咀嚼周期的总持续时间也呈强负相关（r = -0.7至-0.8）。本研究证实，咀嚼性能水平相对稳定，并且与特定咀嚼下颌运动参数的功效相关。
