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目的观察微波消毒对石膏模型精度的影响。方法用功率为700W的家用微波炉对人工灌制标准石膏模型照射7min,并对石膏模型微波消毒前后的尺寸变化进行观测。结果微波消毒前后模拟牙弓宽度、牙间隙、单牙长、单牙宽度、单牙高度的各组线性长度值变化差异无统计学意义(P>0.05)。结论微波输出功率700W消毒石膏模型7min后对模型的精度不会产生明显的影响。
Objective To observe the effect of microwave disinfection on the precision of gypsum model. Methods The artificial gypsum model was irradiated with 700W microwave oven for 7 minutes and the changes of the gypsum model before and after microwave sterilization were observed. Results There was no significant difference in the linear length between the two groups (P> 0.05) before and after microwave disinfection simulated dental arch width, interdental space, single tooth length, single tooth width and single tooth height. Conclusion The microwave output power of 700W sterilized plaster model 7min after the accuracy of the model will not have a significant impact.