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目的:观察改良型托盘与传统托盘对下颌全口义齿印模的影响,比较义齿修复后的临床效果。方法:对60例无牙颌牙槽嵴条件较差病例进行两种印模方法制取下颌全口义齿印模,义齿戴入后对义齿的固位功能、黏膜情况,舒适性、咀嚼功能、食物嵌塞5项内容进行评价。结果:两组病例在舒适程度、黏膜情况、食物嵌塞、咀嚼功能等方面无显著性差异,P>0.05;但在固位功能方面改良型托盘组明显优于传统托盘组,P<0.05。结论:改良型托盘制取的印模显著提高了下颌全口义齿的吸附力,可以普遍应用于牙槽嵴或黏膜条件差的无牙颌修复患者。
Objective: To observe the effect of modified tray and traditional tray on impression of mandibular complete denture, and to compare the clinical effect after denture restoration. Methods: Six kinds of implants of mandibular complete denture were made by two impression methods in 60 cases with poor conditions of alveolar ridge. The denture retained function, mucosa, comfort, masticatory function, Food impaction of five content evaluation. Results: There was no significant difference between the two groups in comfort, mucosa, food impaction and masticatory function, P> 0.05. However, the modified tray group was significantly better than the traditional tray group in retention function, P <0.05. CONCLUSION: Impression made by the improved tray significantly improves the absorption of the mandibular complete dentures and can be widely used in the treatment of edentulous jaw patients with poor alveolar ridge or mucosa.