Weng B X, Khlevnoy V
Loma Linda University, California, USA.
Oral Health. 1995 Nov;85(11):21-3, 24, 27.
Pressures produced during a final impression have been discussed from the standpoint of where they should be applied and where they should be reduced. Areas of the edentulous mouth requiring little pressure are: the palate, residual ridges, and areas of easily displaced gingiva. More pressure is needed in the border seal, on the buccal shelf, and against the retromylohyoid fossa. A clear processed acrylic resin tray with escape holes has been shown to meet the requirements for selective pressure application. Zinc oxide paste is the final impression material of choice in most instances.
从应施加压力的部位和应减轻压力的部位的角度，已经讨论了终印模过程中产生的压力。无牙颌口腔中需要较小压力的区域有：腭部、残余牙槽嵴以及牙龈容易移位的区域。在边缘封闭区、颊侧翼缘区以及下颌舌骨后窝需要更大的压力。已证明带有排溢孔的透明加工丙烯酸树脂托盘能够满足选择性施加压力的要求。在大多数情况下，氧化锌糊剂是终印模材料的首选。
