Steffen Claudius, Duda Katharina, Wulsten Dag, Voss Jan O, Koerdt Steffen, Nahles Susanne, Heiland Max, Checa Sara, Rendenbach Carsten
Department of Oral and Maxillofacial Surgery, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Augustenburger Platz 1, 13353 Berlin, Germany.
Julius Wolff Institute, Berlin Institute of Health, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany.
Diagnostics (Basel). 2023 Feb 5;13(4):586. doi: 10.3390/diagnostics13040586.
Bite force measuring devices that are generally suitable for edentulous patients or patients undergoing mandibular reconstruction are missing. This study assesses the validity of a new bite force measuring device (prototype of loadpad, novel GmbH) and evaluates its feasibility in patients after segmental mandibular resection. Accuracy and reproducibility were analyzed with two different protocols using a universal testing machine (Z010 AllroundLine, Zwick/Roell, Ulm, Germany). Four groups were tested to evaluate the impact of silicone layers around the sensor: no silicone ("pure"), 2.0 mm soft silicone ("2-soft"), 7.0 mm soft silicone ("7-soft") and 2.0 mm hard silicone ("2-hard"). Thereafter, the device was tested in 10 patients prospectively who underwent mandibular reconstruction using a fibula free flap. Average relative deviations of the measured force in relation to the applied load reached 0.77% ("7-soft") to 5.28% ("2-hard"). Repeated measurements in "2-soft" revealed a mean relative deviation of 2.5% until an applied load of 600 N. Maximum bite force decreased postoperatively by 51.8% to a maximum mean bite force of 131.5 N. The novel device guarantees a high accuracy and degree of reproducibility. Furthermore, it offers new opportunities to quantify perioperative oral function after reconstructive surgery of the mandible also in edentulous patients.
目前缺少一般适用于无牙患者或接受下颌骨重建患者的咬合力测量装置。本研究评估了一种新型咬合力测量装置（loadpad原型，novel GmbH）的有效性，并评估了其在下颌骨节段性切除术后患者中的可行性。使用万能试验机（Z010 AllroundLine，Zwick/Roell，德国乌尔姆）通过两种不同方案分析准确性和可重复性。测试了四组以评估传感器周围硅胶层的影响：无硅胶（“纯”）、2.0毫米软硅胶（“2-软”）、7.0毫米软硅胶（“7-软”）和2.0毫米硬硅胶（“2-硬”）。此后，对10例使用游离腓骨瓣进行下颌骨重建的患者进行了前瞻性测试。测量力相对于施加负荷的平均相对偏差达到0.77%（“7-软”）至5.28%（“2-硬”）。在“2-软”组中重复测量显示，在施加负荷达到600 N之前，平均相对偏差为2.5%。术后最大咬合力下降了51.8%，最大平均咬合力为131.5 N。该新型装置保证了高准确性和可重复性。此外，它还为量化下颌骨重建手术后无牙患者的围手术期口腔功能提供了新机会。
