Department of Prosthetic Dentistry, State University of Medicine and Pharmacy "Nicolae Testemițanu", 165 Ştefan cel Mare şi Sfânt Ave., MD-2004 Chisinau, Moldova.
Department of Oro-Maxillo-Facial Surgery and Oral Implantology, State University of Medicine and Pharmacy "Nicolae Testemițanu", 165 Ştefan cel Mare şi Sfânt Ave., MD-2004 Chisinau, Moldova.
Medicina (Kaunas). 2023 Feb 6;59(2):299. doi: 10.3390/medicina59020299.
: Implant rehabilitation of complete edentulous arches has become more and more popular because of the increased access of the population to this type of treatment. Furthermore, the development of new rehabilitation procedures can be applied in most clinical cases, including in those with severe atrophy. Hence, this study aimed to assess the functional changes that can occur in the stomatognathic system after implant rehabilitation procedures. : A total of 63 patients were accepted in the study. They were divided into a first control (dentate) group (CG) and a second study group (edentulous, SG). For the latter, 30 patients received 204 two-stage implants immediately loaded with provisional prostheses. Surface electromyography (EMG) was assessed at the time of prostheses fixation, while for some patients it was applied six months after the fixation of the fixed prostheses, as well. These supplemental investigated patients formed a third, follow-up study group (FSG). All assessments were performed during the processes of clenching and mastication. The obtained data of the two study groups, SG and FSG, were compared with those of the control group, CG. : No statistical differences were found in the electrical muscular activity between the study and control groups during both clenching and mastication ( > 0.05). In addition, there were no differences within the same study group, both initially and after 6 months. The only changes were noticed between static and dynamic values for the right masseter muscle in the follow-up group FSG ( = 0.008). Deviations of the overlapping coefficients were similar for all groups ( = 0.086): for CG, 20.5%, median 11.1 (min. 0, max. 104); for SG, 21.4%, median 12.2 (min. 0, max. 103); for FSG, 36.1%, median 26.9 (min. 0, max. 160). This revealed no neuromuscular adaption to the prostheses. : Implant-prosthetic rehabilitation led to an EMG activity that was similar to that of dentate patients immediately after the placement of the fixed implant-supported prostheses. Moreover, the measured values did not change after six months of functioning for all evaluated parameters. This may point to an immediate restoration of the muscle contraction capacity, without the necessity of adaptation over time. The study serves as an argument for the application and reliability of the immediate fixed implant-supported prostheses from the perspective of muscle adaptation and functioning.
: 全口无牙颌患者对种植修复的需求日益增加，因此种植修复技术越来越受到欢迎。此外，新的修复方法不断发展，可应用于大多数临床病例，包括严重萎缩的病例。因此，本研究旨在评估种植修复后咀嚼系统功能的变化。: 共纳入 63 名患者，分为第一对照组（有牙）（CG）和第二研究组（无牙）（SG）。对于后者，30 名患者接受了即刻负载临时义齿的 204 个两期种植体。在义齿固定时进行表面肌电图（EMG）评估，对于一些患者，在固定义齿固定后 6 个月进行补充评估。这些补充研究的患者形成了第三个随访研究组（FSG）。所有评估均在咬牙和咀嚼过程中进行。将研究组 SG 和 FSG 的数据与对照组 CG 进行比较。: 在咬牙和咀嚼过程中，研究组 SG 和 FSG 的肌电活动与对照组 CG 相比无统计学差异（>0.05）。此外，同一研究组在初始时和 6 个月后也没有差异。在随访组 FSG 中，仅观察到右侧咬肌的静息和动态值之间的变化（=0.008）。所有组的重叠系数偏差相似（=0.086）：CG 组为 20.5%，中位数 11.1（最小值 0，最大值 104）；SG 组为 21.4%，中位数 12.2（最小值 0，最大值 103）；FSG 组为 36.1%，中位数 26.9（最小值 0，最大值 160）。这表明没有对义齿进行神经肌肉适应。: 种植义齿修复后，即刻固定种植体支持义齿放置后，肌电图活动与有牙患者相似。此外，所有评估参数在 6 个月的功能后测量值没有变化。这可能表明肌肉收缩能力的即刻恢复，而无需随着时间的推移进行适应。该研究从肌肉适应和功能的角度为即刻固定种植体支持义齿的应用和可靠性提供了依据。
