Chrcanovic Bruno Ramos, Bergengren Tom, Stanisic Nikola, Sohrabi Sahar, Larsson Christel, Svensson Peter, Häggman-Henrikson Birgitta
Department of Oral and Maxillofacial Surgery and Oral Medicine, Faculty of Odontology, Malmö University, Malmö, Sweden.
Department of Prosthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden.
Sci Rep. 2025 Jul 2;15(1):22752. doi: 10.1038/s41598-025-07772-2.
The aim of this long-term follow-up study was to investigate the relationship between bite force, bruxism, and fractures of teeth and veneer porcelain of fixed dental prostheses. Patients previously assessed as probable bruxers (n = 30) and non-bruxers (n = 21), all rehabilitated with dental implant-supported restorations, underwent a clinical examination and measurement of maximum bite force. A univariate general linear model was used to compare regression lines showing the relationship between fractures and bite force. Bruxers had significantly higher maximum bite force (p = 0.023) and higher proportion of tooth/veneer porcelain fractures per total number of tooth/prosthetic units (p = 0.045). There was no significant difference in the relationship between frequency of tooth/veneer porcelain fractures and maximum bite force between probable bruxers and non-bruxers (p = 0.054). However, there was a significant difference between probable bruxers and non-bruxers when the percentage of fractures in relation to the total number of units was considered instead of the frequency of fractures (p = 0.035). Higher maximum bite force in probable bruxers was related to higher prevalence of fractures of teeth and veneer porcelain, emphasizing the potential benefits of pre-treatment assessment of bruxism as well as bite force. Easy-to-use reliable clinical methods for bite force measurement should be tested and implemented in dental practice.
这项长期随访研究的目的是调查咬合力、磨牙症与牙齿及固定义齿贴面瓷折裂之间的关系。先前被评估为可能磨牙者（n = 30）和非磨牙者（n = 21）的患者，均接受了牙种植支持修复治疗，他们接受了临床检查和最大咬合力测量。使用单变量一般线性模型比较显示折裂与咬合力关系的回归线。磨牙者的最大咬合力显著更高（p = 0.023），且牙齿/贴面瓷折裂数占牙齿/修复单位总数的比例更高（p = 0.045）。可能磨牙者与非磨牙者在牙齿/贴面瓷折裂频率与最大咬合力之间的关系上无显著差异（p = 0.054）。然而，当考虑折裂数占单位总数的百分比而非折裂频率时，可能磨牙者与非磨牙者之间存在显著差异（p = 0.035）。可能磨牙者较高的最大咬合力与牙齿及贴面瓷折裂的较高患病率相关，这强调了磨牙症及咬合力治疗前评估的潜在益处。应测试易于使用且可靠的咬合力测量临床方法并在牙科实践中应用。
