Evidence map›Paper›PMID 39150006›Full record

ArticleCommunity dentistry and oral epidemiology2025

The declining affordability of dental care in New Zealand from 1978 to 2023.

Ryan Gage, Jonathan Broadbent, William Leung, Martin Lee, Trudy Sullivan

Abstract read
In one paragraph

Article in Community dentistry and oral epidemiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Ryan GageDepartment of Public Health, University of Otago, Wellington, New Zealand.
Jonathan BroadbentSir John Walsh Research Institute, University of Otago, Dunedin, New Zealand.ORCID 0000-0002-8905-398X
William LeungDepartment of Public Health, University of Otago, Wellington, New Zealand.
Martin LeeCommunity Dental Service, Te Whatu Ora-Waitaha Canterbury, Christchurch, New Zealand.
Trudy SullivanDepartment of Preventive and Social Medicine, University of Otago, Dunedin, New Zealand.

Funding

New Zealand Ministry of Health Oral Health Research Fund MH9.02
6 · The paper itself

Abstract

backgroundIn the early 2020s, nearly half of New Zealand adults reported that cost of treatment had prevented them from accessing dental care, with higher rates among Māori, Pasifika and individuals living in the most deprived areas. Unaffordable dental care may be explained by a rise in dental service fees over time relative to personal income, as documented in New Zealand between 1978 and 1993. However, there have been no contemporary estimates in New Zealand of how the affordability of dental care has changed. The aims of this study were to analyse the change in dental treatment fees and the personal income of New Zealanders from 1978 to 2023 and to explore differences in affordability of dental care by ethnicity.

methodsAverage fees for dental treatments were sourced from surveys completed by practising New Zealand dentists. Earnings (from 1978) and personal income data (full population from 2000 and by ethnicity from 2008) were sourced from Statistics NZ and NZ Official Yearbooks. Inflation-adjusted changes in average fees, weekly personal earnings and income were calculated as a percentage change from 1978 levels for fees and earnings and from 2000 for personal income.

resultsFor the five dental treatments with data available from 1978 to 2023, fees increased in the range of 75%-236%, while earnings increased by 46% over the same period. Fees for other treatments (with data available from 1981 to 2009) similarly increased and mostly surpassed changes in earnings. From 2008 to 2023 the overall increase in personal income (about 21% across all ethnic groups) kept pace with the rising cost of most treatments. However, due to persistent income inequalities, in 2023, Māori and Pasifika would need to spend a higher proportion of their weekly income (approximately 16% and 23% respectively) to receive the same dental treatments as NZ Europeans.

conclusionsFees for dental treatments have risen markedly in recent decades, more sharply than the price of other goods and services.

Indexed as

Dental CareFees, DentalHealth Services AccessibilityAdultEthnicityFemaleHumansIncomeMaleMiddle AgedNew Zealanddental services researcheconomicsoral health policytime series

Identifiers

PMID39150006
PMCPMC11754142

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.