Abstract:
Objectives: This study was conducted to evaluate the antimicrobial effect of mouthwashes containing nanohydroxyapatite (Nno-HAp) and povidone-iodine (PVP‐I) in comparison with chlorhexidine (CHX) on streptococcus mutans in saliva.
Methodology: Thirty children have high caries index aged between 6-12 years were included in the study following specific inclusion criteria and then grouped randomly into three main groups based on the used mouthwash. Two Saliva samples were collected pre-& post 15 days mouth wash rinsing from each child. Another saliva sample was taken after 15 days of mouth wash discontinuity. The samples were transported immediately to bacterial lab for culting and counting. The efficacy of mouth washes were assessed
Results: After 15 days of mouth-rinsing, all tested mouthwashes revealed a significant reduction in streptococcus mutans count. CHX mouthwash showed the highest antibacterial effect followed by PVP‐I and Nano-Hap with high significant difference between them. However, after 15 days of discontinuity it was found that there was significant difference between chlorohexidine and Nano-hydroxyapatite groups only.