Influence of thickness of soft lining materials on clinical evaluation of conplete mandibular denture

本研究的目的是探讨软衬材料厚度对临床评价的影响，以及临床评价与口腔黏膜厚度的关系。实验义齿的软衬材料厚度分别为1 mm和2 mm。用SDMI测量口腔黏膜厚度，用筛选法测量咀嚼性能，用T-Scan II系统测量咬合接触面积、咬合力和力心轨迹稳定性，对实验义齿进行临床评价。结果表明：1.口腔黏膜厚度有舌侧变薄的趋势；2.软衬材料厚度对义齿的咀嚼性能无影响。牙合接触面积和咬合力在1 mm和2 mm厚度之间差异无统计学意义。4.临床评价与口腔黏膜厚度之间存在较小的相关性。

The purpose of this study was to investigate the influence of the thickness of soft lining materials on clinical evaluation, and the relation between clinical evaluation and thickness of oral mucosa.After obtaining informed consent, 4edentulous patients participated in this study. The thicknesses of soft lining materials based on test-dentures were 1mm and 2mm. The thicknesses of oral mucosa was measured using SDMI The test-dentures were clinically evaluated by measuring masticatory performance by the sieving method, and the value of the occlusal contact area, occlusal force and stability of track of center offorce using T-Scan II system.The results were as follow1.The thicknesses showed a tendency to be thinner on the lingual side rather than at alveolar crest2.The thickness of soft lining materials has no influence on the masticatory performance.3. There were no significant difference between the value of the occlusal contact area and that of the ocelusal force between 1mm and2 mm thicknesses.4.Only a minor relation was found between the clinical evaluation and the thickness of oral mucosa.