Relationship between the changes in plaque microbiota and the oral hygiene status during supervised toothbrushing in 6-year-old children

S. Gromova, E. Kolevatykh, A. K. Koledaeva, K. A. Krivokorytov, O. A. Maltseva, M. S. Medvedeva, E. D. Postnikova
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Abstract

Relevance. Poor oral hygiene leads to plaque formation, where the number of opportunistic and acid-producing microorganisms can exceed the permissible values, and true pathogens may colonize the oral cavity. Mixed dentition is one of the critical periods in dentoalveolar system development. Thus, oral hygiene control in children is the main factor for dental disease prevention.Material and methods. Dental students of the Kirov State Medical University examined twenty 6-year-old children from kindergarten #35 in Kirov. The group brushed their teeth after lunch, initially supervised by students and then by a kindergarten teacher. The simplified oral hygiene index (OHI-S) score (Green, Vermillion, 1964) helped to assess oral hygiene status. The microbiological testing determined the total microbial count and periodontal pathogens by real-time PCR.Results. The first examination of children showed their oral hygiene level was poor before the supervised brushing. The total microbial count slightly exceeded the reference values. The hygiene index improved by 30% after two months of supervised brushing. The total microbial count decreased significantly (by 89%).Conclusion. Supervised toothbrushing in 6-year-old children for two months positively affects the hygiene and microbiological condition of the oral cavity, helps to reduce the plaque quantity and to change the microbial composition of the dental plaque, and, accordingly, lowers the caries risk and its complications in the future.
6岁儿童监督刷牙时牙菌斑菌群变化与口腔卫生状况的关系
的相关性。不良的口腔卫生导致牙菌斑的形成,其中机会性和产酸微生物的数量可能超过允许值,真正的病原体可能在口腔中定植。混合牙列是牙槽系统发育的关键时期之一。因此,控制儿童口腔卫生是预防口腔疾病的主要因素。材料和方法。基洛夫国立医科大学的牙科学生检查了基洛夫第35幼儿园的26岁儿童。这个小组在午餐后刷牙,最初由学生监督,然后由幼儿园老师监督。简化口腔卫生指数(OHI-S)评分(Green, Vermillion, 1964)有助于评估口腔卫生状况。微生物学检测采用实时荧光定量pcr法测定牙周微生物总数和牙周病原菌。第一次检查显示,在监督刷牙之前,儿童的口腔卫生水平很差。微生物总数略高于参考值。经过两个月的监督刷牙,卫生指数提高了30%。微生物总数明显减少(89%)。6岁儿童在监督下刷牙2个月,对口腔卫生和微生物状况有积极影响,有助于减少牙菌斑数量,改变牙菌斑的微生物组成,从而降低未来患龋的风险及其并发症。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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