Attitudes of general dental practitioners in Wales towards employing dental hygienist-therapists

Dental therapists in general dental practice. A literature review and case-study analysis to determine what works, why, how and in what circumstances

INTRODUCTION

In the United Kingdom, policy and guidance changes regarding the role of dental therapists (DTs) were implemented in recent years with a view to changing dental care to a more preventive-focussed, teamwork approach. However, success in the adoption of this model of working has been varied.

AIMS

Adopting a realist approach, our aim was, to examine the use of DTs in general dental practices in Wales, exploring what works, why, how and in what circumstances.

MATERIALS AND METHODS

The research comprised two stages. (a) A structured literature search, dual-coding papers for high-level factors describing the conditions or context(s) under which the mechanisms operated to produce outcomes. From this, we derived theories about how skill-mix operates in the general dental service. (b) Six case studies of general dental practices (three with a dental therapist/three without a dental therapist) employing a range of skill-mix models incorporating semi-structured interviews with all team members. We used the case studies/interviews to explore and refine the theories derived from the literature.

RESULTS

Eighty-four papers were coded. From this coding, we identified seven theories which reflected factors influencing general dental practices within three broad contexts: the dental practice as a business, as a healthcare provider and as a workplace. We tested these theories in interviews with 38 dental team members across the six care studies. As a result, we amended five of the theories.

CONCLUSION

Our analysis provides theory about outcomes that DTs may facilitate and the mechanisms that may assist the work of DTs within different contexts of general dental practice.

Feasibility study: assessing the efficacy and social acceptability of using dental hygienist-therapists as front-line clinicians

Background The oral health of the adult population has been improving in the United Kingdom decade upon decade. Over half of dental service activity in the National Health Service (NHS) is limited to a check-up without any further treatment. This raises a question as to whether check-ups could be provided by dental hygienist-therapists, rather than general dental practitioners. The aim of this study was to assess the feasibility of a definitive trial to evaluate the costs and effects of using dental hygienist-therapists to undertake the check-up.Methods/design Adult NHS patients were randomised into three arms in two dental practices: patients who only saw dental hygienist-therapists for a check-up, those that saw the general dental practitioner and dental hygienist-therapist alternatively and a control, where patients only saw the general dental practitioner for their check-up. The study ran for 15 months. The primary outcome measures of the study were patient recruitment, retention and fidelity. A parallel and embedded qualitative study was undertaken which recorded the views of participating patients to determine the social acceptability of the intervention.Results Sixty patients participated in the study. The initial recruitment rate for the study was 33.7%. This figure increased to over 82.1% when telephone calls or face-to-face recruitment was utilised. The retention rates were 60% for both the dental hygienist-therapist only group and the alternate general dental practitioner and dental hygienist-therapist group, compared to 70% for the general dental practitioner only group. Fifteen patients were interviewed in the qualitative study and supported a team approach to the provision of check-ups in the NHS. Conclusion This study demonstrates the feasibility of a definitive trial to evaluate the costs and effects of using dental-hygienist-therapists to undertake the check-up.

Determining the optimal model for role substitution in NHS dental services in the UK: a mixed-methods study

Background

Maximising health gain for a given level and mix of resources is an ethical imperative for health-service planners. Approximately half of all patients who attend a regular NHS dental check-up do not require any further treatment, whereas many in the population do not regularly attend. Thus, the most expensive resource (the dentist) is seeing healthy patients at a time when many of those with disease do not access care. Role substitution in NHS dentistry, where other members of the dental team undertake the clinical tasks previously provided by dentists, has the potential to increase efficiency and the capacity to care and lower costs. However, no studies have empirically investigated the efficiency of NHS dental provision that makes use of role substitution.

Research questions

This programme of research sought to address three research questions: (1) what is the efficiency of NHS dental teams that make use of role substitution?; (2) what are the barriers to, and facilitators of, role substitution in NHS dental practices?; and (3) how do incentives in the remuneration systems influence the organisation of these inputs and production of outputs in the NHS?

Design

Data envelopment analysis was used to develop a productive efficiency frontier for participating NHS practices, which were then compared on a relative basis, after controlling for patient and practice characteristics. External validity was tested using stochastic frontier modelling, while semistructured interviews explored the views of participating dental teams and their patients to role substitution.

Setting

NHS ‘high-street’ general dental practices.

Participants

121 practices across the north of England.

Interventions

No active interventions were undertaken.

Main outcome measures

Relative efficiency of participating NHS practices, alongside a detailed narrative of their views about role substitution dentistry. Social acceptability for patients.

Results

The utilisation of non-dentist roles in NHS practices was relatively low, the most common role type being the dental hygienist. Increasing the number of non-dentist team members reduced efficiency. However, it was not possible to determine the relative efficiency of individual team members, as the NHS contracts only with dentists. Financial incentives in the NHS dental contract and the views of practice principals (i.e. senior staff members) were equally important. Bespoke payment and referral systems were required to make role substitution economically viable. Many non-dentist team members were not being used to their full scope of practice and constraints on their ability to prescribe reduced efficiency further. Many non-dentist team members experienced a precarious existence, commonly being employed at multiple practices. Patients had a low level of awareness of the different non-dentist roles in a dental team. Many exhibited an inherent trust in the professional ‘system’, but prior experience of role substitution was important for social acceptability.

Conclusions

Better alignment between the financial incentives within the NHS dental contract and the use of role substitution is required, although professional acceptability remains critical.

Study limitations

Output data collected did not reflect the quality of care provided by the dental team and the input data were self-reported.

Future work

Further work is required to improve the evidence base for the use of role substitution in NHS dentistry, exploring the effects and costs of provision.

Funding

The National Institute for Health Research Health Services and Delivery Research programme.

Dental skill mix: a cross-sectional analysis of delegation practices between dental and dental hygiene-therapy students involved in team training in the South of England

BACKGROUND

Research suggests that health professionals who have trained together have a better understanding of one another's scope of practice and are thus equipped for teamwork during their professional careers. Dental hygiene-therapists (DHTs) are mid-level providers that can deliver routine care working alongside dentists. This study examines patterns of delegation (selected tasks and patients) by dental students to DHT students training together in an integrated team.

METHODS

A retrospective sample of patient data (n = 2,063) was extracted from a patient management system showing the treatment activities of two student cohorts (dental and DHT) involved in team training in a primary care setting in the South of England over two academic years. The data extracted included key procedures delegated by dental students to DHT students coded by skill-mix of operator (e.g., fissure sealants, restorations, paediatric extractions) and patient demography. χ2 tests were conducted to investigate the relationship between delegation and patient age group, gender, smoking status, payment-exemption status, and social deprivation.

RESULTS

A total of 2,063 patients managed during this period received treatments that could be undertaken by either student type; in total, they received 14,996 treatment procedures. The treatments most commonly delegated were fissure sealants (90%) and restorations (51%); whilst the least delegated were paediatric extractions (2%). Over half of these patients (55%) had at least one instance of delegation from a dental to a DHT student. Associations were found between delegation and patient age group and smoking status (P <0.001). Children under 18 years old had a higher level of delegation (86%) compared with adults of working age (50%) and patients aged 65 years and over (56%). A higher proportion of smokers had been delegated compared with non-smokers (45% cf. 26%; P <0.001).

CONCLUSIONS

The findings suggest that delegation of care to DHT students training as a team with dental students, involved significantly greater experience in treating children and adult smokers, and providing preventive rather than invasive care in this integrated educational and primary care setting. The implications for their contribution to dentistry and the dental team are discussed, along with recommendations for primary care data recording.

Dental therapists/hygienists working in remote-rural primary care: a structured review of effectiveness, efficiency, sustainability, acceptability and affordability

AIM

To examine the use of dental therapist/hygienists to provide primary dental treatment in remote-rural areas with regard to their effectiveness, efficiency, sustainability, acceptability and costs (affordability).

METHOD

The structured literature review of studies indexed in Medline, Embase and CinAHL was conducted using search terms relevant to 'dental therapists' and 'remote-rural'. Remote-rural was defined as 'those (individuals) with a greater than 30-minute drive time to the nearest settlement with a population of greater than 10,000'.

RESULTS

From 1,175 publications screened, 21 studies from 19 publications were initially included. Only seven studies were included that explicitly focused on remote-rural areas. Four were surveys and three were qualitative studies. All of the included studies were reported within the last 7 years. The methodological quality of the surveys varied, particularly with regard to their response rates. All three of the qualitative studies were assessed as potentially weak methodologies. Regarding the research question, none of the studies included provided data relevant to understanding efficiency, cost issues or the acceptability of dental therapists. The available empirical evidence contained only indirect indicators about the sustainability of dental therapy in rural areas.

CONCLUSIONS

The available data indicates that dental therapist/hygienists have suitable skills and could constitute a valuable asset to meet the dental demands in remote-rural areas. However, the evidence base is limited and of a poor quality. There is a need to put in place 'well-designed interventions with robust evaluation to examine cost-effectiveness and benefits to patients and the health workforce'.

Attitudes of New Zealand dentists, dental specialists and dental students towards employing dual-trained Oral Health graduates

AIMS

To determine the attitudes of New Zealand dentists and dental specialists towards employing dual-trained Oral Health (dental therapy/dental hygiene) graduates, their knowledge of the scopes of practice and practising requirements for Oral Health (OH) graduates, and the barriers to employment of these graduates.

MATERIALS AND METHODS

A postal questionnaire was sent to 600 dentists randomly selected from the Dental Council of New Zealand register, as well as all dental specialists on the register. All fifth-year dental students in 2008 were also surveyed.

RESULTS

The response rates for the questionnaires were 66.8% for dentists, 64.5% for dental specialists (specialists) and 72.9% for dental students. Knowledge of the scopes of practice and practising requirements for OH graduates was limited in some areas. Fifty-nine percent of private dental practitioners (PDP dentists) and 53% of specialists would consider employing an OH graduate. The main reason given for not employing an OH graduate was insufficient physical space in the practice.

CONCLUSION

New Zealand dentists and dental specialists were receptive to employing OH graduates. Knowledge of the OH scopes of practice and practising requirements is likely to improve as more OH students graduate and start work. The OH graduates have the potential to make a valuable contribution to the dental team.

An evaluation of a vocational training scheme for dental therapists (TVT)

Commissioned by NHS Education South Central (NESC) Postgraduate Dental Deanery, this work provided an external, independent formative evaluation of the Dental Therapists Vocational Training (TVT) scheme in its first year of operation. Undertaken between March-September 2009, the evaluation engaged with all those involved in the TVT scheme: the newly qualified dental therapists (n = 9; group discussion and questionnaire; portfolio extracts) and interviews with their trainers (n = 9), Associate Postgraduate Dental Dean and TVT Scheme Adviser. Most of those on the scheme did not feel well prepared for work at the point of initial qualification and benefitted from enhancement of confidence and skills. Although the number of treatments undertaken by each of the trainees varied considerably, there was commonality in terms of treatment types. Benefits for trainers included the opportunity to work with a dental therapist and develop a better understanding of their role. They praised the trainees' skills with nervous patients and children and their preventative work. A therapist on the team released the dentist for more complex treatments. Challenges related to the recruitment of trainees and trainers, the relative lack of knowledge about the work of dental therapists, concerns about maintaining the range of therapy skills and issues about UDA (unit of dental activity) distribution. There was widespread support for a mandatory TVT scheme. This scheme could be improved by providing further guidance on the amount and type of clinical experience required.

Differences in characteristics of California dentists who employ dental hygienists and those who do not

BACKGROUND

Dental hygienists can increase dentists' productivity, yet nationwide, one-third of dentists do not employ a hygienist. The profession needs more information on the characteristics of these dentists and their reasons for not employing hygienists.

METHODS

The author used a 2003 survey of California dentists and a logistic regression analysis to assess factors independently associated with dentists' employment of hygienists. These factors included dentists' personal, practice, population, productivity and patient care characteristics. She also assessed characteristics of dentists who did not employ hygienists and their reasons for not doing so.

RESULTS

Dentists who worked full time, employed more administrative personnel, had more operatories, had longer appointments, had more income from private payers and had more elderly patients were more likely to employ hygienists than were dentists with alternative characteristics. Graduates of dental schools outside the United States and those with fewer white patients were less likely to employ hygienists. Reasons for not employing hygienists included personal choice, high costs and not having a sufficient volume of work.

CONCLUSIONS

The author's findings suggested that in employing hygienists, dentists consider preferences, practice income and patient demand, among other factors. Further examination of reasons for employing hygienists is warranted. PRACTICE IMPLICATIONS. Hiring a hygienist increases a dental practice's patient capacity, yet not all dentists can or choose to do so. Policies aimed at increasing dental workforce capacity must take into account dentists' characteristics and preferences.

A preliminary model of work during initial examination and treatment planning appointments

Objective This study's objective was to formally describe the work process for charting and treatment planning in general dental practice to inform the design of a new clinical computing environment.Methods Using a process called contextual inquiry, researchers observed 23 comprehensive examination and treatment planning sessions during 14 visits to 12 general US dental offices. For each visit, field notes were analysed and reformulated as formalised models. Subsequently, each model type was consolidated across all offices and visits. Interruptions to the workflow, called breakdowns, were identified.Results Clinical work during dental examination and treatment planning appointments is a highly collaborative activity involving dentists, hygienists and assistants. Personnel with multiple overlapping roles complete complex multi-step tasks supported by a large and varied collection of equipment, artifacts and technology. Most of the breakdowns were related to technology which interrupted the workflow, caused rework and increased the number of steps in work processes.Conclusion Current dental software could be significantly improved with regard to its support for communication and collaboration, workflow, information design and presentation, information content, and data entry.

A survey of the workload of dental therapists/hygienist-therapists employed in primary care settings

AIM

To determine whether dental therapists/hygienist-therapists employed in UK primary care settings are currently fulfilling a mainly preventive or therapeutic role, and whether the pattern of work they undertake depends upon the specific setting in which they are employed.

DESIGN

Self-administered postal questionnaire including a day-book proforma.

RESULTS

Useable day-book proformas were received from 209 dental therapists/hygienist-therapists. Their analysis indicated that those working in the GDS (when compared with those working in the CDS) are predominantly treating adults and being delegated a preventive role which could equally be fulfilled by singly-qualified dental hygienists.

CONCLUSION

This study suggests that primary care dentists working with dental therapists/hygienist-therapists are currently utilising only a small range of these professionals' skills. Consideration should be given as to whether to (a) meet the wishes of dentists by training singly-qualified hygienists, or (b) develop a system which encourages dentists to use dental therapists/hygienist-therapists differently.