Not enough hands: the oral health workforce shortage

Dental panels reach for this because it is their own profession’s most immediate problem and because the country has an unusual structure to reason about — a universal child service delivered by therapists, sitting alongside an almost entirely private adult market. A candidate who understands that split understands most of New Zealand dentistry.

Here is the version worth holding. The child service works when it is staffed, and it is not reliably staffed, because the people who could staff it can earn considerably more a short drive away in a private practice treating adults who can pay. That is not a failure of vocation. It is a predictable outcome of two labour markets competing for one small pool of graduates.

The supply is narrow by design and by geography. Dentists come from the Bachelor of Dental Surgery at Otago — one programme, one campus, a small annual intake, entered through the competitive Health Sciences First Year or a graduate pathway. There is no second school to expand, so increasing dentist supply means increasing places at a single institution or recruiting from overseas through the Dental Council’s registration examinations.

Oral health therapists, who deliver most routine child care and much preventive care for adults, train on three-year degrees at Otago and at Auckland University of Technology. They are the workforce the Community Oral Health Service actually runs on, and they are also employable in private practice, where hygiene and preventive work is well paid.

Overseas recruitment fills gaps, but dentistry has a slower and more expensive registration route than medicine — a candidate whose qualification is not recognised must sit Dental Council examinations, which are competitive and infrequent — so the tap is narrower than the medical one.

The consequences follow the pattern of every access failure, and the order matters because it shows causation rather than correlation.

Recalls lengthen. The child service works on scheduled examinations at intervals set by risk. When a clinic is short-staffed, the interval stretches, so a lesion that would have been caught early is found later — and in a child, later can mean the difference between a fissure sealant and a general anaesthetic.

Prevention goes first. When a service is under pressure it treats what hurts. Fluoride varnish, sealants and oral health education are the activities that get cancelled, and they are precisely the activities that reduce future demand — so a staffing shortage today produces more disease in five years.

Geography sharpens. Vacancies are hardest to fill in small towns and rural regions, which are also where fluoridation is least likely and deprivation highest. The service is thinnest where need is greatest.

And the adult cliff gets steeper. Children who reach eighteen with untreated disease enter an adult system they must pay for, which is where the cost story on this blog begins.

Four levers, and a strong answer picks one and is honest about its cost.

Pay and conditions. The direct answer to a recruitment problem caused by a pay gap. It is expensive, it competes with every other public sector claim, and it is the option the workforce itself asks for.

Training numbers. More oral health therapist places is the faster lever, because the degree is three years rather than five and the graduates go disproportionately into the public service. Expanding dentist numbers means expanding a single school.

Who is recruited. Targeted admission pathways for Māori and Pacific students address both the shortage and the representation gap at once, and the evidence from medicine is that practitioners from a community are more likely to work in it. This is the lever with the best long-run return and the slowest payoff.

Scope and delivery. Making fuller use of what oral health therapists may already do, taking services to schools and communities rather than expecting attendance at a hub, and using assistants for the tasks that do not need a registered practitioner.

What does not work is exhortation. A service that pays less for harder work in a smaller town will not recruit on the strength of how important the work is.

This arrives in three shapes. The direct one: "Why are children waiting for dental care when it is free?" The career one: "Would you work in the public service?" And the disguised one — "What is the biggest challenge facing dentistry in New Zealand?"

For the direct question, separate funding from staffing. For the career question, be honest about the pay gap rather than performing altruism. For the disguised question, use workforce and connect it to the eighteen-year cliff.

Start with Te Whatu Ora’s pages on the Community Oral Health Service and any recent workforce reporting, then the Dental Council’s annual workforce analysis for registrant numbers by scope and location. The New Zealand Dental Association publishes the profession’s view on recruitment and retention.

Two pieces here sit beside this one. The school dental service is the century-long achievement this shortage threatens, and the cost of dentistry is what happens to those children at eighteen. For the map, read how dental care actually works in New Zealand.