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首页> 外文期刊>Journal of Indian Society of Pedodontics and Preventive Dentistry >Salivary levels of Streptococcus mutans and Streptococcus sanguinis in early childhood caries: An in vivo study
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Salivary levels of Streptococcus mutans and Streptococcus sanguinis in early childhood caries: An in vivo study

机译：儿童龋齿中变形链球菌和血红链球菌的唾液水平：体内研究

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Background: The oral microflora primarily involved in early childhood caries (ECC) is Streptococcus mutans while Streptococcus sanguinis is related to healthy caries-free mouth. The antagonism between the two at biological level is well recognized. Aim: This study aims to compare the pre- and posttreatment salivary levels of S. mutans and S. sanguinis in ECC. Methods: This cross-sectional study was performed on 40 eligible participants. Clinical examination was done, and decayed teeth were recorded. Pre- and Posttreatment saliva sample was taken, processed and bacterial counts were compared. Results: A statistically significant posttreatment reduction was found in S. mutans counts; however, a significant posttreatment elevation was seen in S. sanguinis counts (P 0.001) using Wilcoxon signed-rank test. A significant weak positive correlation was found between S. mutans and decayed teeth in the mouth (r = 0.366 and P = 0.028) using Spearman's correlation. No significant gender association was found between pre- and posttreatment S. mutans and S. sanguinis counts (P = 0.908) and also between decayed teeth (P = 0.321) using Mann–Whitney U-test. Conclusion: Complete dental treatment procedure showed significant reduction and elevation in S. mutans and S. sanguinis counts, respectively. A positive association was observed between S. mutans and ECC while S. sanguinis were positively associated with posttreatment oral environment.
机译：背景：主要参与幼儿龋齿（ECC）的口腔微生物群是变形链球菌，而血链球菌则与健康无龋的口腔有关。两者之间在生物学水平上的拮抗作用是公认的。目的：本研究旨在比较ECC中变形链球菌和血红链球菌治疗前后的唾液水平。方法：这项横断面研究是对40名合格参与者进行的。进行了临床检查，并记录了蛀牙。采集治疗前后的唾液样本，进行处理并比较细菌计数。结果：变形链球菌计数发现治疗后减少有统计学意义;然而，使用Wilcoxon秩和检验，血红链球菌计数显着升高（P 0.001）。使用Spearman的相关性，发现变形链球菌与口腔中的蛀牙之间存在显着的弱正相关（r = 0.366和P = 0.028）。使用Mann-Whitney U检验，治疗前后变形链球菌和血链球菌计数之间（P = 0.908），以及蛀牙之间（P = 0.321）没有发现明显的性别关联。结论：完整的牙科治疗程序分别显示变形链球菌和血红链球菌计数显着降低和升高。变形链球菌与ECC之间存在正相关，而血红链球菌与治疗后的口腔环境呈正相关。

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