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目的比较超声洁牙过程中使用强负压吸唾和弱负压吸唾对空气中细菌含量的影响,以探讨强负压吸唾在控制空气污染方面是否优于弱负压吸唾。方法采用分口实验设计,超声洁治过程中分别使用弱负压吸唾和强负压吸唾,于患者口腔的正前方30cm、50cm、150cm处采用空气自然沉降法采集细菌样本,培养后进行菌落计数。结果基线时,两种干预措施相比差异无统计学意义(P>0.05),使用强负压吸唾后细菌培养后菌落数量明显少于弱负压吸唾组(P<0.05)。结论超声洁治时使用强负压吸唾可更有效的减少口腔诊室空气中细菌的污染。
Objective To compare the effect of strong negative pressure saliva and weak negative pressure saliva on the airborne bacteria content during ultrasonic tooth cleaning to explore whether the negative suction saliva is superior to the weak negative pressure suction saliva in controlling air pollution. Methods The experimental design of the mouth and mouth, the use of weak negative suction saliva and strong negative suction saliva respectively in the ultrasonic cleaning process, bacterial samples were collected by air natural sedimentation in front of the patient’s mouth 30cm, 50cm, 150cm, after culture Colonies count. Results At baseline, there was no significant difference between the two interventions (P> 0.05). After the bacteria were strongly ingested by strong negative pressure, the number of colonies was significantly less than that of the weak negative suction saliva group (P <0.05). Conclusion Ultrasonic cleaning with strong negative suction saliva can reduce bacterial contamination in the air of the oral clinic more effectively.