全口义齿制造中硬腭不同解剖形态频率的测定

M. Waqas, N. Yazdanie, Khuda e Dad, H. Aslam, A. Bashir, Mohid Rehman
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摘要

目的:确定不同硬腭解剖形态患者制作全口义齿的频率,比较不同硬腭形态热固化义齿基托聚合物的平均变形(mm)。方法:共有76例患者获得知情同意,并分为中、低位硬腭组。用海藻酸盐印模制备牙模,浇筑III型结石,在每个铸模的软硬腭交界处后腭封闭区最深处标记参考点R。固化后,铸件连同固化的义齿基托从烧瓶中取出。在固化周期48h后,通过移动显微镜测量从R到R′的变形,以毫米为单位。结果:76例患者中低腭型45例(59.2%),中腭型31例(40.8%)。对每个样本分别取R1、R2和R3三个读数。低硬腭形态平均畸变为0.52mm,标准差为0.18;中硬腭形态平均畸变为0.76mm,标准差为0.27,p值为0.0001,具有显著的临床意义。结论:硬腭形态对上颌全口义齿在后腭区固位有直接影响。关键词:热固化义齿基托,硬腭变形,热固化尺寸变化,硬腭解剖,义齿基托
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Determination of the Frequency of Various Anatomical Forms of the Hard Palate for Complete Denture Fabrication
OBJECTIVE: To determine the frequency of patients with various anatomical forms of the hard palate for complete denture fabrication and to compare the mean distortion in heat cure denture base polymer in millimetres in different hard palate forms. METHODOLOGY: Informed consent was taken from total of seventy six patients and divided into low and medium hard palate forms. Dental casts were prepared from alginate impression and poured in type III stone and reference point R was marked on the deepest part of the posterior palatal seal area at the junction of hard and soft palate on each cast. After curing, the cast along with the cured denture base was retrieved from the flask. After 48h of curing cycle the distortion was measured in millimetres from R to R' via traveling microscope. RESULTS: Among seventy six participants the frequency of low palate forms was 45 (59.2%) and medium palate forms was 31 (40.8%). For each sample three readings were taken R1, R2 and R3. The mean distortion measured in low hard palate form was 0.52mm with a standard deviation of 0.18, the mean distortion measured in medium hard palate form was 0.76mm with a standard deviation of 0.27, which were clinically significant with a p-value of 0.0001. CONCLUSION: The hard palate forms has direct influence on retention of maxillary complete denture in posterior palatal area. KEY WORDS: Heat Cure denture base, distortion in hard palate forms, dimensional changes in heat cure, hard palate anatomy and denture bases
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