Inhibitory potential of turmeric extract (Curcuma domestica Val.) toward the growth of Streptococcus gordonii bacteria

Abstract

Introduction: Dental caries is a disease caused by damage to the hard tissue of the teeth by the metabolic activity of bacteria, one of which is the cariogenic bacteria Streptococcus gordonii. Turmeric is one of the most popular spices in Asia with good antibacterial capabilities. Turmeric content such as curcumin can inhibit bacterial growth. Objective: To determine the potential inhibitory power of turmeric extract on the growth of Streptococcus gordonii. Method: The research is carried out using in vitro laboratory experimental analytical research with a posttest only control group design. The research determined the effect of turmeric extract concentrations of 50%, 12.5%, 3.125%, 0.78% against Streptococcus gordonii bacteria on agar media. Statistical data analysis is carried out to determine whether there was a significant effect of turmeric extract on the inhibition of the growth of Streptococcus gordonii bacteria in each treatment. Results: There was a significant influence on the test results between groups of turmeric extract concentration on the inhibitory power of Streptococcus gordonii bacteria. Conclusion: Turmeric extract can inhibit the growth of Streptococcus gordonii. Higher concentration of turmeric rhizome extract which can inhibit the growth of Streptococcus gordonii bacteria more effectively.