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目的：正畸患者口腔内环境往往会受到多种不良影响，造成大量微生物种群定植于牙龈周围，并形成牙菌斑改变牙周组织的形态和结构，对正畸效果及疗程产生较大不利因素，如何采用合理干预措施降低口腔正畸患者牙菌斑和牙龈炎的发生率，成为正畸是否成功的关键因素之一。本研究旨在探讨脉冲式冲牙器对正畸患者牙菌斑及牙龈炎症的影响。方法：以82 例青少年正畸患者及健康志愿者为研究对象，将正畸患者随机分为研究组（41 例）和对照组（41 例）；于正畸后30 天后对患者进行口腔卫生宣教及日常刷牙方法系统培训，研究组正畸患者采用脉冲式冲牙器；于干预前后评价牙龈指数（gingival index，GI）和Quigley-Hein 菌斑指数（plaque index，PI）。结果：在干预前，志愿者与正畸30 天患者均存在不同程度口腔卫生问题，正畸患者GI 及PI等指数明显高于健康人群，差异具有统计学意义（P＜0.05）；经过一定周期的干预，两组正畸患者的GI均有不同程度的改善，但以研究组患者效果更为明显，差异具有统计学意义（P＜0.05）。结论：脉冲式冲牙器能够产生超细高压脉冲水柱，可以在正畸治疗期间有效提高菌斑清除率，减缓牙龈炎的进程，不同程度改善正畸患者口腔卫生，有助于提高正畸治疗效果。

英文摘要:

Objective:The oral environment of patients with gingivitis was often plagued by a variety of adverse factors, which caused a large number of microbial populations colonized the gums around, and formed the plaque morphology and structure of periodontal tissue, maybe effected the orthodontic treatment and ultimately a greater disadvantage. Using reasonable interventions reduce plaque and gingivitis orthodontic patients the incidence was became a key factor in the success of orthodontic. This study aimed to investigate the effect of pulse oral irrigation prevent for orthodontic patients with gingivitis.Methods:82 cases of adolescent orthodontic patients and healthy volunteers were as the research object, the orthodontic patients were randomly divided into study group (41 cases) and control group (41 cases); After 30 days in orthodontic patients for oral health education and daily brushing systemtraining, the pulse oral irrigation was used by orthodontic patients of research group; The Gingival index (GI) and plaque index (PI) of all patients were evaluated before and after intervention.Results:Before the intervention, the volunteers and orthodontic patients in 30 days had varying degrees of oral health problems, such as the GI and PI index of orthodontic patients was significantly higher than the healthy population, the difference was statistically significant (P<0.05); After a certain period of intervention, the GI of the two groups of patients has varying degrees of improvement, but in order to study the effect is more obvious group of patients, the difference was statistically significant (P <0.05).Conclusion:The pulse oral irrigation can produce the high-voltage pulse jet of water, which effectively improve plaque removal rate, effectively slow the process of gingivitis , orthodontic patients with varying degrees of improvement in oral health and help orthodontic treatment during orthodontic treatment.

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