ABSTRAK
Latar belakang: Early Childhood Caries disebabkan oleh adanya aktivitasdari bakteri kariogenik, terutama Streptococcus mutans, yang dapatmenurunkan pH lingkungan mulut. Veillonella spp., bakteri koagregratStreptococcus mutans, dapat menaikkan pH lingkungan mulut. Tujuan:Mengetahui perbandingan kuantitas Streptococcus mutans dan Veillonella spp.saliva pada anak kategori risiko karies rendah dan tinggi. Metode: DNAStreptococcus mutans. dan Veillonella spp. dari ekstraksi saliva subjekdikuantifikasi menggunakan qPCR. Hasil: Terdapat perbedaan bermaknaantara jumlah bakteri pada anak dengan kategori karies rendah dan tinggi.Kesimpulan: Jumlah Streptococcus mutans maupun Veillonella spp. padasaliva anak dengan kategori risiko karies tinggi lebih banyak daripada risikokaries rendah.

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ABSTRACT
Background Early Childhood Caries is caused by cariogenic bacteria rsquo s activity mainly Streptococcus mutans which decrease the oral environment rsquo s pH Otherwise Veillonella spp coaggregration of Streptococcus mutans can raise the oral environment rsquo s pH Aim To examine the quantity comparison of Streptococcus mutans and Veillonella spp in children rsquo s saliva with high risk and low risk caries Methods Quantification ofDNA Streptococcus mutans and Veillonella spp extracted from subject rsquo s saliva using qPCR Results There were significant differences between the number of bacteria in children with high risk and low risk caries Conclusion There is a higherquantity of Streptococcus mutans and Veillonella spp in children rsquo s saliva with high risk caries than low risk caries