Evidence map›Paper›PMID 29956852›Full record

Observational studyCommunity dentistry and oral epidemiology2018

Tooth loss is a complex measure of oral disease: Determinants and methodological considerations.

Simon Haworth, Dmitry Shungin, So Young Kwak, Hae-Young Kim, Nicola X West, Steven J Thomas, Paul W Franks, Nicholas J Timpson, Min-Jeong Shin, Ingegerd Johansson

Open access · hybridAbstract readObservational Study
In one paragraph

Observational study in Community dentistry and oral epidemiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 4 pooled it
5.7field-weighted citation impact, top 3% of its field
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

48 citing papers in PubMed, 4 syntheses or guidelines pooled it, 107 citations in OpenAlex.

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  20. Association between dental diseases and stroke.The Saudi dental journal · 2024
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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

10 authors at 5 institutions in 4 countries.

Simon HaworthMedical Research Council Integrative Epidemiology Unit, Department of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.ORCID 0000-0001-7793-7326
Dmitry ShunginDepartment of Odontology, Umeå University, Umeå, Sweden.
So Young KwakDepartment of Public Health Sciences, BK21PLUS Program in Embodiment: Health-Society Interaction, Graduate School, Korea University, Seoul, Republic of Korea.
Hae-Young KimDepartment of Public Health Sciences, BK21PLUS Program in Embodiment: Health-Society Interaction, Graduate School, Korea University, Seoul, Republic of Korea.
Nicola X WestBristol Dental School, University of Bristol, Bristol, UK.
Steven J ThomasBristol Dental School, University of Bristol, Bristol, UK.
Paul W FranksDepartment of Clinical Sciences, Genetic and Molecular Epidemiology Unit, Lund University, Skåne University Hospital Malmö, Malmö, Sweden.
Nicholas J TimpsonMedical Research Council Integrative Epidemiology Unit, Department of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, UK.
Min-Jeong ShinDepartment of Public Health Sciences, BK21PLUS Program in Embodiment: Health-Society Interaction, Graduate School, Korea University, Seoul, Republic of Korea.
Ingegerd JohanssonDepartment of Odontology, Umeå University, Umeå, Sweden.
Korea University · KRUniversity Of Bristol Dental Hospital · GBUmeå University · SEHarvard University · USUniversity of Bristol · GB

Funding

Medical Research Council MC_UU_12013/3Wellcome Trust 201268/Z/16/ZWellcome Trust 202802/Z/16/Z
6 · The paper itself

Abstract

objectivesCounts of missing teeth or measures of incident tooth loss are gaining attention as a simple way to measure dental status in large population studies. We explore the meaning of these metrics and how missing teeth might influence other measures of dental status.

methodsAn observational study was performed in 2 contrasting adult populations. In total, 62 522 adult participants were available with clinically assessed caries and periodontal indices from the Swedish arm of the Gene-Lifestyle Interactions and Dental Endpoints Study (GLIDE) and the Korea National Health and Nutrition Examination Survey (KNHANES) in the Republic of Korea. Longitudinal measures of tooth loss were available for 28 244 participants in GLIDE with median follow-up of 10.6 years.

resultsIn longitudinal analysis, hazard for tooth loss was associated with baseline dental status (previous tooth loss, periodontal status and caries status) and socio-demographic variables (age, smoking status and highest educational level). Analysis of cross-sectional data suggested that indices of caries exposure were not independent of periodontal status. The strength and direction of association varied between groups, even for measures specifically intended to avoid measuring tooth loss. Individuals with impaired periodontal health (community periodontal index [CPI] 3 or higher in any sextant) had higher standardized decayed and filled surfaces (DFS; number of DFS divided by total number of tooth surfaces) in GLIDE (incidence risk ratio [IRR] 1.05 [95% CI: 1.04, 1.07], but lower standardized DFS in KNHANES (IRR: 0.95 [0.92, 0.98]) than individuals with better periodontal health (CPI <3 in all sextants).

conclusionsIncident tooth loss is a complex measure of dental disease, with multiple determinants. The relative importance of dental caries and periodontal disease as drivers of tooth loss differs between age groups. Measures of dental caries exposure are associated with periodontal status in the studied populations, and these associations can be population-specific. Consideration of the study-specific properties of these metrics may be required for valid inference in large population studies.

Indexed as

Oral HealthAdultDental CariesDMF IndexFemaleHealth StatusHumansLongitudinal StudiesMaleMiddle AgedMouth DiseasesNutrition SurveysPeriodontal DiseasesPeriodontal IndexRepublic of KoreaTooth Losscariesepidemiologyperiodontal diseasestooth loss

Identifiers

PMID29956852
PMCPMC6282797
OpenAlexW2810905560

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.