Objective: .Streptococcus mutans is considered one of the bacteria that causes necrosis, as it metabolism sugar to obtain energy, producing an acidic environment and causing depression in the enamel surface, which causes the dissolution of the calcium molecule, a problem of cavited in the tooth; so the aim of the research is to evaluate the effect of mouthwashes chlorhexidine 0.12% - honey 50% - propolis 5% on Streptococcus mutans in children.Study design: A laboratory study to assess the efficiency of chlorhexidine, honey and Propolis on Streptococcus mutans counts. The sample included 60 children divided into: G1 (Chlorhexidine 0.12% = 20 children), G2 (Propolis 5% = 20 children), G3 (Honey 100% = 20 children). The data was analyzed using the statistical analysis program SPSS, version 13.00, at a confidence level of 95% (P <0.05(. Paired sample T test was used to compare the variable means of the values of the studied variables.Results: There is significant difference between  three groups. The reduction ratio was 89.97% in G1, 85.49% in G2 and 76.29% in G3.Conclusion: This study demonstrated the effectiveness of mouthwashes of chlorhexidine, propolis and honey on the bacteria of Streptococcus mutans.

Aim: aim of this study is to evaluate the clinical and radiographic healing after repairing mechanical furcal perforations that occurred in primary molars by using MTA (Mineral Trioxide Aggregate) and search in some factors that may affect the prognosis of the treatment. Materials &amp; Methods: we had 34 primary molars in 32 children aged 5&ndash;10 years, were treated by using MTA material after the occurrence of furcal perforation during pulpotomy procedure. Cases had been followed clinically and radiographically within 12 months. Statistical analyses were performed at p-value = 0.05. Results: All teeth were asymptomatic at the first week. Overall success rate was 79.3%. There was no significant statistically differences between overall-success rates according to the perforation size and continues bleeding in the furcation area (p-value &gt; 0.05). Conclusions: Iatrogenic furcal perforations that may occur during pulpotomy in primary molars can be treated successfully by using MTA, and small sized-perforations may have more favorable prognosis than the large ones. &nbsp;Iatrogenic furcal perforations that may occur during pulpotomy in primary molars can be treated successfully by using MTA, and small sized- perforations may have more favorable prognosis than the large ones.

Aim:The aim of this study is to evaluate the clinical and radiographic healing after repairing mechanical furcal perforations that occurred in primary molars by using MTA (Mineral Trioxide Aggregate) and search in some factors that may affect the prognosis of the treatment. Materials & Methods: 34 primary molars in 32 children aged 5-10 years were treated by using MTA material after the occurrence of furcal perforation during pulpotomy procedure. Cases had been followed clinically and radiographically within 12 months. Statistical analyses were performed at p-value =0.05. Results: All teeth were asymptomatic at the first week. Overall success rate was 79.3%. There was no significant statistically differences between overallsuccess rates according to the perforation size and continues bleeding in the furcation area (p-value > 0.05). Conclusions: Iatrogenic furcal perforations that may occur during pulpotomy in primary molars can be treated successfully by using MTA, and small sized-perforations may have more favorable prognosis than the large ones.