|
| 上颌牙列缺失固定种植与可摘义齿咬合特点及肌电电位比较 |
| Comparison of occlusal characteristics and electromyographic potential between fixed implants and removable dentures in maxillary missing dentition |
| 投稿时间：2022-01-11 |
| DOI：10.3969/j.issn.1000-0399.2022.07.007 |
| 中文关键词: 上颌牙列缺失 固定种植 可摘义齿 咬合特点 肌电电位变化 |
| 英文关键词: Absence of maxillary dentition Fixed implants Removable dentures Occlusal characteristics Changes in electromyographic potential |
| 基金项目: |
|
| 摘要点击次数: 752 |
| 全文下载次数: 342 |
| 中文摘要: |
| 目的 比较上颌牙列缺失固定种植与可摘义齿咬合特点及肌电电位变化,为此类患者选择合适的修复方式提供参考。方法 选取2020年3月至2021年2月中国人民解放军联勤保障部队第九○四医院收治的78例上颌牙列缺失患者,采用随机数字表法分为固定种植组(给予固定种植)和可摘义齿组(给予可摘义齿),各39例。对比两组患者咬合特点[牙尖交错位咬合指标(咬合接触时间、差值帧、咬合力中心点位移、咬合力中心前后向偏移度及咬合力中心左右向偏移度),前伸、侧方位咬合分离时间]及咀嚼肌(静息、最大紧咬状态下)肌电电位变化。结果 固定种植组咬合接触时间、差值帧、咬合力中心点位移及咬合力中心左右向偏移度均小于可摘义齿组,差异有统计学意义(P＜0.05);两组咬合力中心前后向偏移度对比,差异无统计学意义(P＞0.05)。固定种植组前伸位咬合分离时间、左侧及右侧方位时咬合分离时间均短于可摘义齿组,差异有统计学意义(P＜0.05)。固定种植组双侧前颞肌前束、双侧咬肌静息状态时肌电幅值均小于可摘义齿组,差异有统计学意义(P＜0.05)。固定种植组双侧前颞肌前束、双侧咬肌牙尖交错位最大紧咬状态时肌电幅值均大于可摘义齿组,差异有统计学意义(P＜0.05)。结论 对于上颌牙列缺失患者,固定种植修复较可摘义齿可提高咬合稳定性、降低咬合里中心偏移,降低肌电的活动,提高咀嚼肌的潜力。 |
| 英文摘要: |
| Objective Toexplore the occlusal characteristics and electromyographic potential changes of fixed implants and removable dentures in the maxillary dentition, in order to provide some theoretical guidance for the clinical treatment of such patients.Methods From March 2020 to February 2021, 78 patients with maxillary dentition loss who were admitted to the 904th Hospital of the Joint Logistics Support Force of the Chinese People’s Liberation Army were selected and divided into fixed implant group (fixed implantwas given) and removable denture group (removable dentures were given) by random number table method, with 39 cases in each group. The occlusal characteristics of the two groups of patients were compared and myoelectric potential changes.Results The occlusal contact time, the difference frame, the displacement of the occlusal force center, and the left-right offset of the occlusal force center in the fixed implant group were all smaller than those in the removable denture group, and the differences were statistically significant (P<0.05). There was no statistically significant difference in the anterior and posterior offsets (P>0.05). The occlusal separation time in the protraction position and the occlusal separation time in the left and right lateral positions in the fixed implant group were shorter than those in the removable denture group, and the differences were statistically significant (P<0.05). The EMG amplitudes of bilateral anterior temporalis muscle and bilateral masseter muscle in the fixed implant group were lower than those in the removable denture group, and the difference was statistically significant (P<0.05). The EMG amplitudes of bilateral anterior temporalis muscle and bilateral masseter muscle cusps in the maximum clenched state in the fixed implant group were higher than those in the removable denture group, and the difference was statistically significant (P<0.05).Conclusions For patients with maxillary missing dentition, fixed implant restoration can improve occlusal stability, reduce occlusal center deviation, reduce EMG activity, and improve the potential of masticatory muscles compared with removable dentures. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
