一种患者防护口罩在牙周洁治时防喷溅效果的仿真研究

 目的 评价患者防护口罩在牙周洁治时对口腔喷溅物的防护效果。方法 设计一种新型患者防护口罩，在口腔门诊诊室内采用仿真人模拟牙周超声洁治治疗，按洁牙位置及防溅措施分成六组（第一组为右上切牙弱吸，第二组为右上切牙弱吸+强吸，第三组为右上切牙弱吸+新型患者防护口罩，第四组为右下切牙弱吸，第五组为右下切牙弱吸+强吸，第六组为右下切牙弱吸+新型患者防护口罩），比较各组牙周洁治时口腔喷溅物的喷溅距离及喷溅面积所占百分比。结果 第三组和第六组（使用弱吸+新型患者防护口罩）无论是右上切牙还是右下切牙洁治，白纸上的喷溅距离和喷溅面积所占百分比均为0，而第一组、第二组、第四组、第五组（单纯使用弱负压吸唾或者结合强负压吸唾）均可见一定喷溅距离，喷溅面积百分比为（1.34±0.56）%~（24.48±7.43）%。结论 新型患者防护口罩可有效防护牙周洁治时口腔喷溅物的喷溅。

Effect of protective mask against splashes during simulated periodontal scaling

Objective To evaluate the protective effect of patient''s protective mask on oral spray during periodontal scaling. Methods Ultrasonic scaling was simulated by simulated human in dental clinic to test the protective effect of a new protective mask for patients. The test was divided into six groups according to the teeth position and protective methods(group 1: Upper right anterior teeth + low volume saliva ejector; group 2: Upper right anterior teeth + low volume saliva ejector+ high volume saliva ejector; group 3: Upper right anterior teeth + low volume saliva ejector + new protective mask; group 4: Lower right anterior teeth + low volume saliva ejector; group 5: Lower right anterior teeth + low volume saliva ejector+ high volume saliva ejector; group 6: Lower right anterior teeth + low volume saliva ejector + new protective mask). The spattering range and percentage of spattering area during simulated ultrasonic scaling among groups were compared. Results The spattering range and the percentage of spattering area on white paper were both 0 in group 3 and group 6 (using low volume saliva ejector + new protective mask, whether it was upper right anterior teeth or lower right anterior teeth), while group 1, 2, 4 and 5 (only use low volume saliva ejector or combined with high volume saliva ejector) produced spatter of certain range, and percentage of spattering area were (1.34±0.56)%-(24.48±7.43)%. Conclusion The new protective mask can effectively stop oral spattering during ultrasonic scaling.