Use of a pressure-sensitive sheet to evaluate occlusal status in patients with mandibular prognathism
Use of a pressure-sensitive sheet to evaluate occlusal status in patients with mandibular prognathism
复制标题
使用压敏片评估下颌前突患者的咬合状态
DOI：
10.5794/jjoms.46.9
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
G. Kohama
中科院分区：
文献类型：
--
作者：
I. Nagai;Tatsuru Suyama;N. Tanaka;T. Ide;A. Miyazaki;K. Takemura;G. Kohama
本文对18例下颌无颌症患者（下颌无颌症组）和14例正常成人（对照组）的咬合状态进行了对比研究。我们还研究了下颌骨多颌畸形患者正颌手术后（1、3、6和12个月）咬合状态的变化。使用压敏片（Dental Prescale ® 30 HW型，Fuji Photo Film Co.）记录咬合接触面积、最大自主等长咬合力和咬合压力。用分析系统（FPD-703，Fuji Photo Film Co.）分析数据。结果：1）术前下颌多颌畸形组咬合接触面积和咬合力均明显小于对照组，但咬合压力高于对照组; 2）术后12个月观察下颌多颌畸形患者咬合接触面积和咬合力的变化。咬合接触面积和咬合力在术后1个月显著下降，术后6个月显著增加至术前水平，术后12个月约为术前水平的40%。术后12个月时，咬合接触面积小于对照组，咬合力低于对照组。3）对下颌无颌患者术前至术后12个月的咬合压力进行评估。术后1个月，该值显著增加，但随后下降。术后12个月，多颌畸形组的咬合压力与对照组相似。4）很少有研究使用压敏片。这种方法允许评估咬合状态的所有牙齿容易和迅速。压敏片对临床了解咬合状态有重要意义。
We examined occlusal status in 18 patients with mandibular prognathism (mandibular prognathism group) as compared with that of 14 adults with normal occlusion (control group). We also studied changes in occlusal status after orthognathic surgery (1, 3, 6, and 12 months) in the patients with mandibular prognathism. The occlusal contact area, maximum voluntary isometric bite force, and occlusal pressure were recorded using a pressure-sensitive sheet (Dental Prescale ® 30HW type, Fuji Photo Film Co.) and the data were analyzed with an analysis system (FPD-703, Fuji Photo Film Co.).The results were as follows:1) Preoperatively, the mandibular prognathism group had a significantly smaller occlusal contact area and a lower bite force than the control group, but had a higher occlusal pressure.2) Changes in occlusal contact area and bite force were evaluated in the patients with mandibular prognathism from before operation to 12 months after operation. Occlusal contact area and bite force decreased significantly 1 month after operation, increased significantly to preoperative levels 6 months after operation, and were about 40% of preoperative levels 12 months after operation. However, 12 months after operation occlusal contact area was smaller and bite force was lower than those in the control group.3) Occlusal pressure was evaluated in the patients with mandibular prognathism from before operation to 12 months after operation. The value increased significantly 1 month after operation, but decreased subsequently. Twelve months after operation, occlusal pressure in the prognathism group was similar to that in the control group.4) Few studies have used pressure-sensitive sheets. This method permits assessment of occlusal status of all teeth easily and promptly. Pressure-sensitive sheets are useful for understanding occlusal status clinically.