1985年纤维加强塑料型盒问世,作者即开始使用微波能处理义齿。唯一需要的特殊设备是1台厨用微波炉。首先研究微波处理后树脂的物理性能。将聚甲基丙烯酸甲酯制成尺寸为25×12×2.5mm 树脂条,水浴处理8小时。另外10个同样大小的树脂条放入微波炉(400W),每面各处理2分30秒。测试树脂条的硬度、孔积率和横截强度,结果在两种方法固化的丙烯酸树脂条间没有明显差别。Hayden 还测试了弯曲强度,同样没有发现明显差别。另外,又制做20个3×1×1 cm 试件,一半用微波能固化,另一半用水浴固化。在微波固化的10个试件中有7个有相当多的气孔,而常规水浴处理者则很少或没有气孔。用另外一台瓦数可调且带转盘的微波炉处理另10个同样试件,功率为90W,试件上下两面各处理6分30秒。虽然孔积率有所下降,但仍是一个需要进一步研究克服的问题。因此又进行另一个实验研究孔积率,发 1985 fiber-reinforced plastic box came out, the author began to use the microwave to treat the denture. The only special equipment needed is a kitchen microwave oven. First study the physical properties of the resin after microwave treatment. Polymethylmethacrylate was made into a size 25 × 12 × 2.5 mm resin strip and treated in a water bath for 8 hours. Another 10 equal sized strips of resin were placed in a microwave oven (400W) for 2 minutes and 30 seconds on each side. The hardness, hole area ratio and cross-sectional strength of the resin strip were tested and as a result there was no significant difference between the two method cured acrylic strips. Hayden also tested the flexural strength and found no significant difference. In addition, another 20 3 × 1 × 1 cm specimens were made, one half cured with microwaves and the other half cured with a water bath. Seven of the 10 specimens cured by microwaves had quite a few stomata, whereas those treated with conventional water bath had little or no stomata. The other 10 pieces of the same specimen were treated with another microwave oven with adjustable wattage and turntable. The power was 90W. The upper and lower sides of the specimen were treated for 6 minutes and 30 seconds respectively. Although the porosity rate has dropped, it is still a problem that needs further study to overcome. Therefore, another experiment to study the hole area rate, hair