Abstract
Why Bother: Tension for Change in Oral Health Systems
The 2021 World Health Organization (WHO) Oral Health Resolution and the subsequent WHO Global Strategy for Oral Health, the FDI Vision 2030 Report, and the Lancet Oral Health Series have been calling for urgent improvements in oral health systems with an overall goal to achieve universal health coverage (UHC) for oral health (Watt et al. 2019; Glick et al. 2021; WHO 2021, 2022a). Given that oral diseases and conditions are largely preventable, stronger emphasis on oral health promotion and oral disease prevention is key to optimize people’s oral health (Watt et al. 2019; Glick et al. 2021; WHO 2021, 2022a). Consequently, the goals set out in the recent WHO Oral Health Action Plan express a clear need for better governance, financial and delivery arrangements, as well as improved implementation strategies within oral health systems; in addition, the cruciality of leveraging evidence to strengthen oral health systems is clearly emphasized (WHO 2023). Note that the WHO (2010) defines a health system as follows:
A health system consists of all the organizations, institutions, resources and people whose primary purpose is to improve health. This includes efforts to influence determinants of health as well as more direct health-improvement activities. The health system delivers preventive, promotive, curative and rehabilitative interventions through a combination of public health actions and the pyramid of health care facilities that deliver personal health care — by both State and non-State actors.
Setting bold goals for oral health systems improvement is important but, how can they actually be achieved? Improving health systems requires a clear understanding of existing problems, identifying options to address them, as well as implementation and evaluation of new approaches with the active participation of multiple stakeholder groups in each of these steps. Until now, however, progress in oral health systems transformation has been very slow (Watt et al. 2019; Listl et al. 2022). There is a lack of a collective problem-solving orientation to leverage evidence for decision making together with citizens/patients, policy makers, service providers, and payers (Listl et al. 2022). To truly approach evidence-informed oral health policy making, substantial “know-how” and “know-do” gaps still need to be overcome.
However, there is a unique opportunity for the oral health community to learn and evolve from previous successes and failures in evidence-informed policy making. Recently, the Global Commission on Evidence to Address Societal Challenges highlighted that COVID-19 has created a once-in-a-generation focus on evidence that has fast-tracked collaboration among decision makers, researchers, and evidence intermediaries; in addition, this has led to a growing recognition of the need to formalize and strengthen evidence-support and evidence-implementation systems (Global Commission on Evidence to Address Societal Challenges 2022, 2023). For example, the COVID-19 Evidence Network to Support Decision-making (COVID-END) has produced a taxonomy and evidence syntheses to support policy makers, organizational leaders, professionals, and citizens when making decisions during the COVID-19 pandemic (Grimshaw et al. 2020). This also involved an adaptation of the COVID-END taxonomy to the oral health context and an inventory of evidence syntheses with relevance to oral health (Pedra et al. 2021). More generally, however, the oral health field is still lacking a drive for innovative breakthroughs in evidence-informed policy making. By and large, the interface between research and oral health policy making remains unstudied (Verdugo-Paiva et al. 2023).
According to previous work on health care transformation (Plsek 2013), it is pertinent to draw from innovations in other fields when such innovations are not yet present in the field of interest. To this end, the purpose of this article is to highlight recent advancements in evidence-informed policy making (outside the oral health field) and to raise awareness for innovation opportunities to drive positive change in the oral health field. The main focus of this paper is government policy making (not clinical decision making) and specifically government policy making about the health-system arrangements that determine whether the right oral health programs, services, and products get to those who need them. While we emphasize the general relevance of clinical practice guidelines and that their goals should be aligned with overarching policy-making goals, a detailed focus on clinical decision-making processes and clinical practice guidelines is out of the scope of the present article.
Normative Goals and a Taxonomy for (Oral) Health Systems
Normative goals, which are shared by the stakeholders involved in the relevant policy-making context, are an important prerequisite to improving health systems. For example, WHO’s UHC framework is widely used in the global (oral) health policy-making context and seeks to ensure “that all individuals and communities have access to essential, quality health services that respond to their needs and that they can use without suffering financial hardship” (WHO 2023). According to the recent WHO Global Oral Health Status Report, “achieving the highest attainable standard of oral health is a fundamental right of every human being” (WHO 2022b). An example of evolving normative goals is provided by the recent expansion of the Institute for Healthcare Improvement Triple Aim (3 aims: improving health outcomes, improving care experiences, keeping per capita costs manageable) beyond a Quadruple Aim (fourth aim: keeping providers engaged) to a Quintuple Aim (fifth aim: advancing health equity) (Berwick et al. 2008; Bodenheimer and Sinsky 2014; Nundy et al. 2022).
Another stepping stone for (oral) health systems improvement is a common understanding of the various health system components. This ensures a comprehensive overview of alternative health systems intervention points, underpins meaningful dialogues between the stakeholders involved, and helps to identify the right type of evidence needed to inform health policy making. Table 1 provides a taxonomy that distinguishes between governance arrangements, financial arrangements, delivery arrangements, and implementation strategies within (oral) health systems (Lavis 2022):
Taxonomy of Governance, Financial and Delivery Arrangements, and Implementation Strategies within (Oral) Health Systems.
Adapted from: Lavis (2022). ICT, integrated care teams.
Taxonomies are instrumental to drive positive change in (oral) health systems, and the taxonomy presented here (see Table 1) may serve as lever to engage policy makers, citizens, and other actors to operationalize health systems such that the right (oral) health programs, services, and products get to those who need them.
Note that the type of evidence needed to inform policy making (health systems level) is typically distinct from the type of evidence needed for clinical decision making (clinical provider/patient level). While government policy making is concerned with the health-system arrangements that determine whether the right (oral) health programs, services, and products get to those who need them, clinical decision making is concerned with point-of-care choices about specific clinical interventions and treatment products for individual patients. Both types of decision making play an important role, and their goals should be aligned. For example, it seems plausible that the needs-based planning of the oral health workforce (a policy-making task that is also crucial in relation to achieving UHC) should consider the resources required to provide patient care according to clinical practice guidelines (Birch et al. 2021). At the same time, clinical practice guidelines need to be articulated in alignment with overarching policy-making goals, for example, that (oral) health care should be safe, effective, efficient, and equitable. While a detailed focus on clinical practice guidelines is out of the scope of the present article (see above), the general relevance of clinical practice guidelines and their alignment with policy-making goals is emphasized (Frantsve-Hawley et al. 2022).
Matching Evidence and Decision Making: Context Is Everything
Decision-making processes can generally be broken down into 4 consecutive steps (see Fig. 1, left panel): (1) understanding a problem and its causes, (2) identifying options to address the problem and selecting the most suitable option, (3) identifying implementation considerations, and (4) monitoring implementation and evaluating impacts (Global Commission on Evidence to Address Societal Challenges 2023).

Stepwise decision-making process (left panel); matching evidence and decision-making steps (right panel). Adapted from Global Commission on Evidence to Address Societal Challenges (2023).
Challenges in decision making can arise from misalignments in the demand and supply of evidence (Global Commission on Evidence to Address Societal Challenges 2023). On the evidence-demand side, decision makers request evidence to address concrete context-specific questions. On the evidence-supply side, actors can have different forms of evidence available (e.g., data analytics, modeling, evaluation, behavioral/implementation research, qualitative insights). At the interface between the evidence-demand and the evidence-supply sides, fragmented requests and responses can complicate decision making. To respond to decision makers’ questions, the right mix of forms of evidence needs to be matched with the right step in the decision-making process (see Fig. 1, right panel; Global Commission on Evidence to Address Societal Challenges 2023).
Because local evidence (i.e., what has been learned in a country or region) typically provides a different information value than global evidence (i.e., what has been learned from around the world, including how it varies by groups and contexts), there is an important role for evidence support and evidence implementation systems to combine both local evidence and global evidence (Global Commission on Evidence to Address Societal Challenges 2023). Combining the best of 2 worlds (local and global evidence), evidence support and evidence implementation systems are geared to provide context-specific answers to concrete questions from decision makers. Guidelines and technology assessments/cost-effectiveness analyses are typical types of evidence that integrate both local and global evidence (see Fig. 2). The Global Commission on Evidence to Address Societal Challenges highlights the formalization and strengthening of country-level evidence-support and evidence-implementation systems and—more generally—the enhancement of the global evidence architecture as key priorities to address societal challenges (Global Commission on Evidence to Address Societal Challenges 2022, 2023).

Evidence support systems combine local and global evidence. Adapted from Global Commission on Evidence to Address Societal Challenges (2023).
For example, countries around the world are increasingly rethinking their health benefit packages to help achieve UHC. The first-ever development of “best buy” interventions on oral health for inclusion in an updated WHO Global Health Action Plan for the prevention and control of NCDs (Appendix 3) is important progress toward achieving UHC (WHO 2021, 2023). But concrete implementation of such interventions still requires policy adoption on the country level. To this end, national health technology assessment (HTA) bodies can leverage evidence-informed deliberative processes (EDP) to enhance legitimate health benefit package design based on deliberation between stakeholders to identify, reflect, and learn about the meaning and importance of values and to interpret available evidence on these values (Oortwijn et al. 2021). Clinical practice guidelines provide a relevant information source to inform such processes. The EDP approach distinguishes 6 practical steps of an HTA process based on observed practices of HTA bodies around the world (Oortwijn et al. 2021):
Installing an advisory committee
Defining decision criteria
Selecting health technologies for HTA
Scoping, assessment, and appraisal (for every health technology)
Communication and appeal
Monitoring and evaluation
The EDP approach also provides recommendations on how 4 elements of legitimacy can be implemented in each of these steps (Oortwijn et al. 2021). First, the core element of EDPs is stakeholder involvement ideally operationalized through stakeholder participation with deliberation. Such stakeholder involvement ensures that all relevant values are considered. Second is evidence-informed evaluation, which allows for the use of research evidence and contributions from stakeholders in terms of their experiences and judgments when further evidence is unavailable. This ensures that relevant evidence is considered. Third, transparency ensures that the deliberative processes, including their objectives, modes of stakeholder involvement, and the decision reached and its related argumentation, is explicitly described and made publicly available. Fourth is appeal, which ensures that a decision can be challenged and revised if new information or insights become available (Oortwijn et al. 2021).
Learning (Oral) Health Systems
(Oral) health systems can also be strengthened through the use and generation of evidence in cycles of rapid “learning and improving” (Global Commission on Evidence to Address Societal Challenges 2023). Thereby, 3 iterative steps can be distinguished in which such “learning and improving” can take place while using stocks of existing evidence in various forms and producing flows of new evidence (see Fig. 3):
Step 1 seeks to “make sense and prioritize” health system gaps, using evidence to provide a birds-eye view.
Step 2 serves to co-design new services and care models, drawing on a wide variety of forms of evidence.
Step 3 implements the new service/care model, applying existing evidence to optimize the implementation while also creating flows of new evidence through monitoring and evaluation.

Learning (oral) health systems evolve from iterative steps of learning and improvement. Adapted from Global Commission on Evidence to Address Societal Challenges (2023).
Over time, iterative journeys through the above steps 1 to 3 can create momentum for a learning (oral) health system, that is, the combination of a health system and a health research system that, at all levels, is anchored on patients’ needs, values, perspectives, and aspirations; driven by timely data and evidence; supported by appropriate decision supports, aligned governance, financial and care-delivery arrangements; and enabled with a culture of and competencies for rapid learning and improvement.
Engaging Citizens for (Oral) Health Systems Improvement
In its most recent update, the Global Commission on Evidence to Address Societal Challenges emphasizes the relevance of putting evidence at the center of everyday life, that is, turning the focus to citizens as the very people whom policy makers, organizational leaders, professionals, and those working in multilateral organizations are meant to serve (Global Commission on Evidence to Address Societal Challenges 2023). The opportunities of engaging citizens for (oral) health systems improvement are vast (Listl et al. 2022). For example, the Evidence-informed Policy Network has successfully demonstrated how citizen engagement can help to strengthen health systems (Macaulay et al. 2022). Other opportunities for citizen engagement include research priority setting together with citizens (e.g., James Lind Alliance 2018), problem solving in poorer and marginalized groups (Institute of Medicine 1997), HTA processes (Oortwijn et al. 2020), and leveraging patient-reported (oral) health outcomes for quality improvement (Bombard et al. 2018). Not least, the widening use of patient-facing apps and artificial intelligence substantiates the relevance of maximizing the benefits of digital health solutions and minimizing their harms for citizens (Global Commission on Evidence to Address Societal Challenges 2023).
Opportunities for Evidence-Informed Policy Making to Drive Change in Oral Health Systems
Oral health systems can benefit enormously from better harnessing of evidence and stakeholder values. Windows of opportunity exist across the full array of health system levers (see Table 1): governance arrangements (policy authority, organizational authority, professional authority, consumer and stakeholder involvement), financial arrangements (raising of revenues, funding of organizations, provider remuneration, purchasing of products and services, consumer incentivization), delivery arrangements (how care is designed, by whom care is provided, where care is provided, with what support care is provided), and implementation strategies (targeted at consumers, providers, organizations) (Lavis 2022).
The emergence of the WHO Resolution on Oral Health (WHO 2021) provides insights into the high-level (global) policy-making dynamics and pieces of evidence that were instrumental in the recent recognition of oral health as a pressing issue on the global health policy agenda. In 2021, the foundational WHO Resolution on Oral Health (WHO 2021) was endorsed by the WHO Executive Board and approved by the World Health Assembly. To substantiate the urgency to act on oral heath, the WHO Resolution on Oral Health drew from evidence on the worldwide disease burden of oral conditions (GBD 2017 Disease and Injury Incidence and Prevalence Collaborators 2018; GBD 2017 Oral Disorders Collaborators 2020; IARC 2020), the global economic burden due to poor oral health (Righolt et al. 2018), absenteeism at school and the workplace due to poor oral health (Peres et al. 2019), and associations of poor oral health with other conditions such as, for example, diabetes and cardiovascular diseases (Seitz et al. 2019). Eventually, the WHO Resolution paved the way for the subsequent approval of the WHO Oral Health Strategy (WHO 2022a) and the WHO Global Oral Health Action Plan (WHO 2023).
The current WHO Global Oral Health Action Plan (WHO 2023) describes targets to achieve UHC for oral health and to reduce the oral disease burden by 2030 (see overview in Table 2), which could be operationalized through evidence-informed policy-making processes as outlined in the sections above. Such processes could drive positive change in oral health governance (e.g., strengthening the capacity of oral health units at ministries of health), (oral) health promotion and oral disease prevention (e.g., policies and regulations to limit free sugars intake), health workforce models (e.g., integrated care teams with new mixes of oral health professionals and other health professionals), oral health care (e.g., agreement on national UHC benefit packages and the related development of “best buy” interventions for oral health), creating and updating oral health national guidelines, oral health information systems (e.g., integration of dental and medical patient records), and oral health research agendas (e.g., national oral health research priorities to focus on public health and population-based interventions with a clear focus on knowledge translation). As such, the goals described in the WHO Global Oral Health Action Plan provide normative directionality that can be leveraged through evidence-informed policy making toward positive change in oral health systems.
WHO Global Oral Health Action Plan (WHO 2023): Levers for Evidence-Informed Policy Making.
Further examples illustrate the relevance and recent progress toward evidence-informed (oral) health policy making:
The examples above also highlight the important role of public research funding agencies for strengthening capacities for evidence-informed (oral) health policy making.
Call for Action and Next Steps
In this article, we have highlighted the opportunities and challenges for evidence-informed (oral) health policy making to drive positive change in oral health systems. In light of the growing recognition of the relevance of evidence-informed policy making, we call for (oral) health policy makers, the (oral) health research community, public research funding agencies, civil society organizations, (oral) health professionals, and payors to support and embrace the positive evolution of this innovative paradigm at the intersect between research and policy making. Strengthening capacities for evidence-informed health policy making is critical to drive positive change in oral health systems.
Author Contributions
S. Listl, R. Baltussen, J.N. Lavis, contributed to data conception and design, drafted and critically revised the manuscript; A. Carrasco-Labra, F.C. Carrer, contributed to data conception and design, critically revised the manuscript. All authors gave their final approval and agree to be accountable for all aspects of the work.
