1. Introduction
  1.1 Significance of Oral Microbiome in Health and Disease
  1.2 Objectives of the Study
2. Literature Review
  2.1 Role of Probiotics in Gut and Oral Health
  2.2 Mechanisms of Action in the Oral Cavity
  2.3 Clinical Studies on Probiotics in Oral Health
3. Methodology
  3.1 Selection of Probiotic Strains
  3.2 In vitro and Clinical Evaluation Methods
4. Results
  4.1 Effects of Probiotics on Oral Microbiome
  4.2 Clinical Outcomes of Probiotic Supplementation
5. Discussion
  5.1 Implications for Preventive Dentistry
  5.2 Recommendations for Probiotic Use in Oral Health