自我机械清除舌苔对舌苔源性口臭患者口臭程度的影响

目的：初探自我机械清除舌苔对舌苔源性口臭的治疗效果。方法： 选取舌苔源性口臭患者10名，随机分2组,试验组从基线始给予机械清除舌苔的指导，对照组不处理舌苔。在基线、1周、2周、4周、8周时进行口气检测，记录临床数据，比较试验组与对照组组内不同时间点临床指标的变化以及两组间的差异。结果： 试验组舌苔面积和舌苔厚度有降低的趋势，但此变化差异无统计学意义（P＞0.05）,试验组感官法口臭值明显降低（P<0.001）。两组口腔内挥发性硫化物浓度均呈现先降低再升高的变化趋势，对照组变化幅度较小，且差异无统计学意义（P＞0.05）。观察2个月后，试验组与对照组平均探诊深度及出血指数均显著低于基线时（P＜0.05），但组间差异并无统计学意义（P＞0.05）。两组组内不同时间点菌斑指数均无显著变化，两组间差异也无统计学意义（P＞0.05）。结论： 自我机械清除舌苔有降低舌苔面积和舌苔厚度的趋势，可以减轻口臭，但患者的自我清除有一定局限性。

Effect of mechanical self-cleaning of tongue coating on malodor in halitosis patients originating from tongue coating

Objective:To evaluate the malodor level and to explore the effect of mechanical self-cleaning of tongue coating in patients with halitosis originating from tongue coating.Methods: Ten patients with halitosis originating from tongue coating were enrolled and divided into two groups randomly.The patients in test group received instruction of mechanical cleaning of tongue coating while no such instruction was given to control group.Organoleptic test (OLT) score,volatile sulfide compounds (VSC) value,area of tongue coating (Ta),thickness of tongue coating (Tt) and periodontal condition were recorded at baseline and were repeated at the end of 1 week,2 weeks,4 weeks and 8 weeks later.The clinical outcomes were compared at different time points between the groups.Also,changes within the group were analyzed.Results: As time went by,tongue coating area and thickness tended to decrease in test group while the changes showed no statistically difference (P>0.05).The organoleptic score in test group decreased significantly (P<0.001).Changes of volatile sulfide compounds value within each group had no statistically difference (P>0.05),though they showed a tendency to decrease and fewer changes in control group were found.Compared with the baseline,average probing depth and bleeding index (P<0.05) were significantly lower in both the groups at the end of the test period,while no statistically difference was observed between test group and control group (P>0.05).Plaque index showed no difference at different time points in both the groups (P>0.05).Conclusion: Mechanical self-cleaning of tongue coating did not influence plaque index while it had tendency to reduce tongue coating area and thickness.Malodor could be released after self-cleaning of tongue coating to a certain extent,indicating necessity and importance of intervention role by dentists.