Oral diseases are the world’s most prevalent noncommunicable conditions, affecting roughly half of humanity and imposing substantial quality-of-life and economic burdens. This paper examines how dental health education (DHE) programs influence oral-hygiene knowledge, behaviors, and clinical outcomes, and distills lessons for public health policy with a particular focus on India and Malaysia. Using secondary sources including the WHO Global Oral Health Status Report (2022), India’s National Oral Health Programme (NOHP) guidelines, Malaysia’s National Oral Health Strategic Plan (2022–2030), and recent systematic reviews and trials, we synthesize evidence on effectiveness and program design. Across diverse settings, DHE consistently improves oral-health knowledge and self-care behaviors (e.g., twice-daily brushing) and yields short-term reductions in plaque and gingival inflammation, especially when delivered in schools, grounded in behavior-change theory, and reinforced over time; effects on dental caries are less consistent. Malaysia’s long-standing, school-embedded oral-health system and its current strategic plan illustrate how integrated delivery can achieve high reach and equity-oriented reforms. In India, the NOHP provides a national framework and operational guidance for health-facility and community-based education; however, monitoring and population-level outcomes are constrained by dated national surveillance (e.g., the 2002–03 National Oral Health Survey), underscoring the need for refreshed data systems. Policy implications include embedding DHE within school timetables and primary care, annual teacher training, standardized indicators (including simple clinical indices where feasible), equitable targeting of underserved populations, and integration with universal health coverage initiatives. By consolidating comparative evidence from India and Malaysia against global guidance, the paper offers actionable design and monitoring choices for scaling effective, equitable dental health education in low- and middle-income settings.