Department of Gnatho-Oral Prosthetic Rehabilitation, Nihon University School of Dentistry at Matsudo, Matsudo, Japan.
J Oral Rehabil. 2010 Jul;37(7):553-9. doi: 10.1111/j.1365-2842.2010.02070.x. Epub 2010 Feb 22.
The aim of this study was to determine the effects of an acrylic-based resilient liner (ARL) on masticatory ability by verifying the null hypothesis that masticatory performance and mandibular movements do not differ between people who wear mandibular complete dentures with ARL and those who wear complete dentures with conventional acrylic resin (CAR). From April 2004 to July 2006, we conducted a randomized controlled trial study at two centres. After written informed consent was obtained from 74 edentulous patients, they were randomly allocated to either the ARL group or CAR group. Masticatory performance and mandibular movement at the lower incisal point during chewing were measured as the outcomes. We did not observe significant differences in both outcomes between the groups. The chewing cycles were significantly different during the initial, middle, and final phases of mastication. Within the limitations of the current study, the results indicate that the acrylic-based resilient denture liners used have no clinical impact on the masticatory ability of complete denture wearers.
本研究旨在通过验证以下假设来确定丙烯酸酯基弹性衬垫（ARL）对咀嚼能力的影响，即佩戴 ARL 下颌全口义齿的患者和佩戴传统丙烯酸树脂（CAR）全口义齿的患者的咀嚼性能和下颌运动没有差异。2004 年 4 月至 2006 年 7 月，我们在两个中心进行了一项随机对照试验研究。在从 74 名无牙颌患者获得书面知情同意后，他们被随机分配到 ARL 组或 CAR 组。咀嚼时下颌切牙点的咀嚼性能和下颌运动被作为结果进行测量。我们没有观察到两组在这两个结果上有显著差异。咀嚼的初始、中间和最后阶段的咀嚼周期有显著差异。在当前研究的限制范围内，结果表明使用的丙烯酸酯基弹性义齿衬垫对全口义齿佩戴者的咀嚼能力没有临床影响。
