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检测低强度脉冲超声波(LIPUS)对0.01mm厚度聚四氟乙烯(PTFE)膜和Bio-Gide胶原膜超声透过率,为LIPUS辅助引导组织再生(GTR)术实验研究提供屏障膜的遴选依据。设定LIPUS频率1.5MHz,脉宽200μs,重复率1.0kHz,功率为10~100mW/cm2,间隔10mW/cm2设一检测值,共10组,分别对两种屏障膜的超声透过率进行检测。发现0.01mm厚度PTFE膜超声透过率为78.1%~92.3%,Bio-Gide胶原膜超声通过率为43.9%~55.8%。0.01mm厚度PTFE膜超声透过率明显高于Bio-Gide胶原膜,不同功率下同一屏障膜的超声透过率有统计学差异(P<0.05)。结果表明,0.01mm厚度PTFE膜和Bio-Gide胶原膜超声透过率均较高,应依据不同实验需求遴选屏障膜,并进行超声透过率实验以确保有效功率。
To detect the ultrasonic transmission rate of low intensity pulsed ultrasound (LIPUS) on polytetrafluoroethylene (PTFE) membrane and Bio-Gide collagen membrane with thickness of 0.01 mm, and to provide a screening basis for the experimental study of LIPUS assisted guided tissue regeneration (GTR). Set LIPUS frequency of 1.5MHz, pulse width of 200μs, repetition rate of 1.0kHz, power of 10 ~ 100mW / cm2, interval 10mW / cm2 set a test value, a total of 10 groups, respectively, two kinds of barrier membrane ultrasonic transmission rate was detected . The results showed that the ultrasonic transmission of 0.01mm thickness PTFE membrane was 78.1% -92.3%, and that of Bio-Gide collagen membrane was 43.9% -55.8%. The ultrasound transmission rate of 0.01mm thick PTFE membrane was significantly higher than that of Bio-Gide collagen membrane, and the ultrasound transmission rate of the same barrier membrane under different power had a significant difference (P <0.05). The results showed that the ultrasonic transmission rate of PTFE membrane and Bio-Gide collagen membrane with 0.01mm thickness was high, and the barrier membrane should be selected according to different experimental requirements and the ultrasonic transmittance experiment should be conducted to ensure the effective power.