全口义齿基托边缘位置及形态的临床研究

Clinical study on the complete denture edge position and shape

目的:分析义齿基托边缘实际位置和形态以及与上下颌解剖标志的关系。方法:按照规范化标准制取功能性印模,为10名无牙颌患者进行全口义齿修复。在义齿试戴前后及义齿使用合适后,测量基托边缘厚度,记录基托边缘调改量,观察基托边缘和上下颌解剖标志的关系。结果:全口义齿基托边缘在翼上颌切迹区、颊棚区、远中颊角区、舌骨嵴区的调改量大,具有统计学意义(P<0.05)。下颌义齿颊侧基托边缘在颊棚区与外斜嵴平齐,在远中颊角区避让咬肌附丽。舌侧基托边缘在下颌隆突区与下颌隆突平齐。结论:全口义齿基托边缘在翼上颌切迹区、颊棚区、远中颊角区、及舌骨嵴区易过度伸展。

Objective： To analyse the actual position of denture base and its relationship with the anatomic marks of alveolar ridge.Methods： According to the standardized process,10 sets of complete dentures were fabricated for edentulous patients by taking functional impression. Before and after completion of denture fabrication,trial wearing and full adjustment one week after application,the margin extension,thickness and form of the denture bases were measured. The relationship of denture base outline with anatomic marks of alveolar ridges was observed. Results： The most adjusted regions of upper and lower complete denture bases were hamular notch area,buccal shed area,far middle buccal corner region and retromylohyoid ridge area（ P〈0. 05）. Buccal outline of mandibular base was consistent with the external oblique ridge and the base edge corresponding to masseter muscle attachment in far middle buccal corner region was excluded from the base. Lingual outline was relieved in area of lingual frenum and was consistent with mandibular torus. Conclusion： Denture base is easily over extended in hamular notch area,buccal shed area,far middle buccal corner region and retromylohyoid ridge area.