Future of Dentistry: How Research Training is Shaping Oral Health
"Discover how investments in research training and career development are crucial for creating innovative treatments and improving patient care in the dental field."
The dental profession stands at a pivotal moment, with an unprecedented opportunity to enhance its role in safeguarding oral health. The convergence of scientific and technological advancements offers avenues for creating novel diagnostics, preventions, treatments, and cures. Dental schools, as key educational hubs, bear the responsibility of cultivating and retaining oral health researchers who can effectively harness these advancements for the benefit of both the profession and the patients it serves.
This article emphasizes the critical integration of research training and scholarship into the core values of dental schools. It examines the historical support provided by the National Institutes of Health (NIH) and the National Institute of Dental and Craniofacial Research (NIDCR) for the training and career advancement of dentist-scientists. Furthermore, it presents new data on the outcomes of these investments, comparing them with those in other health professions.
This analysis highlights the urgent need to expand the capacity of well-trained oral health researchers through the strategic re-engineering of training programs. Such strategies are essential for preparing future graduates for collaborative science, clinical trials, translational research, and emerging opportunities. National organizations like the American Dental Association (ADA), the American Dental Education Association (ADEA), and the American Association for Dental Research (AADR) must forge alliances and initiatives to support dental schools and universities in their research mission. Ignoring this call to action would mean disavowing the valuable legacy inherited by the dental profession.
The Global Burden of Oral Disease
Oral disease affects nearly 3.7 billion people worldwide, according to the World Health Organization. The WHO estimates that untreated dental caries affects 2.5 billion people, while severe periodontal disease affects 1 billion and complete tooth loss affects 350 million. In the United States, the CDC reports untreated dental caries in 13.2% of children ages 5–19 and 25.9% of adults ages 20–44 during 2015–2018.
From Norms to Transparent Methods
Standard oral-health research relies on clearly defined methods, normative approaches, and evidence-based sampling. A review in PMC discusses the usefulness of normative approaches for raising awareness of their value in oral health. Reporting guidance emphasizes that the Methods section should explain how the research question was addressed, while evidence-based dentistry guidance identifies random and stratified sampling as ways to support reliable, less biased findings. These methods strengthen trust, but the public-health literature also indicates that effective oral-health promotion requires attention to broader implementation strategies.
From Ancient Care to Modern Hygiene
Dental care dates back thousands of years, with archaeological evidence of oral-health practices among the Egyptians, Greeks, and Romans. Dental hygiene became part of dental practice after it was advocated in 1871, although the movement gained broader favor only in the late 1880s. In 1907, dentist Alfred Fones helped advance the development of dental hygiene. A later milestone was the U.S. Oral Health in America report, which asserted that oral health is inextricably linked to overall health and well-being.
The Critical Role of Research Training for Dentist-Scientists
Dentist-scientists, armed with qualifications such as a Doctor of Dental Surgery (DDS) or Doctor of Dental Medicine (DMD), combined with advanced degrees like a Master of Science (MS), Master of Public Health (MPH), or Doctor of Philosophy (PhD), are uniquely positioned to bridge the gap between basic science discoveries and clinical applications. In an era marked by unprecedented scientific promise, these professionals are essential for translating new scientific and technological advancements into tangible improvements in patient care.
- Dentist Scientist Award (DSA): Introduced in 1984, formalized the training of dentists for careers as clinical research scientists.
- Strategic Plans: NIDCR's 1997 Strategic Plan emphasized interdisciplinary training and team-based research, leading to comprehensive institutional training programs in 2000.
- T32 Programs: These programs offered greater flexibility to dental schools, supporting combined dual-degree (DDS-PhD) training and fostering diverse portfolios of biomedical research.
Research Expands Across Biology and Technology
The National Institute of Dental and Craniofacial Research supports research intended to improve dental, oral, and craniofacial health and provides curated data, tools, and learning resources. The CDC's discussion of the Oral Health in America report highlights advances in biology, biomimetic dental materials, and technology, including rapid advances in salivary research. Current research coverage also includes barriers and disparities in preventive oral-health care, as reflected in Nature's dentistry research listings.
When Oral-Health Progress Falls Short
Oral-health interventions can fail to address the consequences of untreated disease and the conditions that sustain it. A review reports that tooth loss can reduce the ability to chew certain foods and may contribute to malnutrition in late adulthood, while prolonged oral infections may produce further harm. A 2025 study specifically investigates associations between periodontitis, dental caries, and systemic health. These concerns reinforce the warning from implementation research that oral diseases remain a pressing global challenge affecting nearly half of the world's population.
Comparing Dental Models and Outcomes
Comparative oral-health research examines both patient outcomes and alternative ways of delivering care. A 2024 study assessed the association between dentate status, dental utilization, and self-rated health among older adults. Holistic and biological dentistry models are described as taking a whole-body view of oral health, in contrast with conventional general-dentistry framing. Evidence on workforce alternatives remains uncertain: a Cochrane Review cited in a 2015 study could not draw firm conclusions about the relative effectiveness of care provided by auxiliaries versus dentists.
Addressing Workforce Challenges and Re-Engineering Training Programs
Despite these efforts, the dental research workforce faces significant challenges. Over 80% of federally funded biomedical research in the U.S. is supported by the NIH, yet dentist-scientists represent the smallest number of NIH-funded physician-scientists. This disparity, coupled with declining federal funding levels, creates a highly competitive environment for grant awards, impacting research positions and resources in academic institutions.
Turning Evidence Into Better Care
Research synthesis shows that oral-health evidence often requires careful analysis of clustered or correlated observations, such as multiple sealants placed in the same setting. A 2024 systematic review and meta-analysis reported significantly better dental plaque, oral health, and mucosal-plaque status in the professional oral-health-care group than in the control group. The NIDCR's follow-up to the Surgeon General's Oral Health in America report examines the nation's oral health over the subsequent 20 years. Together, these sources emphasize both rigorous analysis and continued evaluation of public-health progress.
Digital Tools and Market Expansion
Future dentistry is being shaped by digital tools, including 3D printing, intra-oral cameras, and computer-aided design systems. One overview reports that 3D printing for crowns and aligners can reduce wait times and costs, while intra-oral cameras improve visibility and diagnostic accuracy. Another industry outlook identifies artificial intelligence as a means of enabling more efficient and tailored treatments and digital dentistry as a way to increase accuracy. The oral-care market is projected by Future Market Insights to expand from USD 58.2 billion in 2026 to USD 95.7 billion by 2036, with a forecast 5.1% growth rate.
Oral Health as General Health
Oral health is increasingly recognized as a vital component of general health and as an influence on multiple systemic systems. A 2025 review focuses on linking oral health to chronic-disease prevention and identifies periodontal diseases as particularly important in this connection. This broader framing means that oral-health policy cannot be separated entirely from chronic-disease prevention. It also supports research approaches that consider oral conditions within the wider health system rather than in isolation.
Community Programs and Connected Care
Community oral-health programs give students opportunities to investigate pressing oral-health issues and their broader connections. The Oral Health Workforce Research Center documented six innovative oral-health service-delivery programs in different states that used teledentistry, based on case studies that included site visits. Interprofessional clinical case studies likewise demonstrate how oral health and overall health are linked and highlight the role of intersectional care. These examples show how research training can connect education, service delivery, and patients' wider health needs.
Data indicates alarming trends: applications from dentist-scientists have increased only marginally, while success rates remain relatively low. The pipeline of junior investigators seeking research grants is shrinking, even as senior dental researchers approach retirement. These trends threaten the future of dentist-scientists and may lead to a vanishing presence in dental academia.
To address these challenges, dental schools must re-engineer their research training programs. This involves fostering collaborations with medical schools and academic health science centers, leveraging resources, and creating holistic mentoring programs. It also requires collecting and sharing data on training and career outcomes to increase transparency and drive change. By investing in DDS faculty educators, diversifying the workforce, and expanding research training in emerging areas, the dental community can ensure a strong and dedicated research workforce committed to improving oral, dental, and craniofacial health.