Evidence map›Paper›PMID 39803929›Full record

ArticleOrthodontics & craniofacial research2025

The Reliability and Validity of Intraoral Photographs in Assessing Orthodontic Treatment Need.

Emma Göranson, Mikael Sonesson, Malin Gullbrand, Per-Erik Isberg, Lillemor Dimberg

Registry-linked trialAbstract readValidation Study
In one paragraph

Article in Orthodontics & craniofacial research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05038865 (Oral Health Related Quality of Life - The Effect of Malocclusions, Gender, Socioeconomic Differences and Orthodontic Treatment Among Adolescents), which is not on this map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing 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.

NCT05038865 recruitingnot on this map

Oral Health Related Quality of Life - The Effect of Malocclusions, Gender, Socioeconomic Differences and Orthodontic Treatment Among Adolescents

TypeobservationalSponsorMalmö UniversityRan2021 to 2027Enrolled675ConditionsMalocclusion, Quality of Life, Orthodontics, AdolescentArmsMalocclusion and Orthodontic Treatment
3 · Its place in the literature

Who cites it

9 citing papers in PubMed.

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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

5 authors.

Emma GöransonCenter for Orthodontics and Pediatric Dentistry, Public Dental Service Östergötland, Norrköping, Sweden.
Mikael SonessonDepartment of Orthodontics, Faculty of Odontology, Malmö University, Malmö, Sweden.ORCID https://orcid.org/0000-0001-8422-9344
Malin GullbrandDepartment of Orthodontics, Eastmaninstitutet, Folktandvården Stockholm AB, Public Dental Services, Stockholm, Sweden.
Per-Erik IsbergDepartment of Statistics, Lund University, Sweden.
Lillemor DimbergDepartment of Orthodontics, Eastmaninstitutet, Folktandvården Stockholm AB, Public Dental Services, Stockholm, Sweden.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundOrthodontic treatment need has commonly been assessed using treatment need indices during clinical examinations or using photographs in combination with plaster casts. Recently, the use of intraoral photographs alone to screen malocclusions has increased.

objectiveThis study aimed to validate intraoral photographs for the assessment of orthodontic treatment need. MATERIALS AND

methodsThe study sample consisted of case files from 30 pre-orthodontic patients aged 12-19 years. Each case file included intraoral photographs and casts. The cases were consecutively recruited from two orthodontic treatment waiting lists: 15 from the Department of Orthodontics at Folktandvården Eastmaninstitutet, Stockholm, Sweden and 15 from the Center for Orthodontics and Pediatric Dentistry, Norrköping, Public Dental Service Östergötland. Their orthodontic treatment need was assessed by four raters (calibrated orthodontists) using the indices IOTN-AC, IOTN-DHC, ICON, and DAI. The four raters individually assessed the 30 cases on three occasions: (1) photos only, (2) photos and casts, and (3) photos only. Finally, the four raters jointly made a consensus assessment using both photos and casts. For IOTN-AC and IOTN-DHC, interrater agreement was assessed with Fleiss' kappa, and validity with the Wilcoxon signed-rank test. For ICON and DAI, interrater agreement was assessed with Intra Class Correlation (ICC) (1, 2) and validity with a paired t-test.

resultsInterrater agreement for IOTN-AC was slight (0.14-0.18) and moderate for IOTN-DHC (0.51-0.57), regardless of whether photographs were used alone or combined with casts. ICON demonstrated moderate interrater agreement (0.57-0.72), while DAI showed moderate to excellent (0.70-0.91), similarly unaffected by the use of photographs alone or in combination with casts. The validity analysis, which compared the individual assessments to the consensus one, revealed equivalent differences whether the assessment involved intraoral photographs alone or in combination with casts.

conclusionIntraoral photographs are sufficient for assessing orthodontic treatment need because interrater agreement and validity are similar whether photos are used alone or with casts. However, interrater variability was substantial for both assessment methods.

trial registrationClinicalTrial.gov. identifier: NCT05038865.

Indexed as

Index of Orthodontic Treatment NeedMalocclusionNeeds AssessmentOrthodontics, CorrectivePhotography, DentalAdolescentChildFemaleHumansMaleModels, DentalObserver VariationReproducibility of ResultsYoung Adultinterrater agreementintraoral photographyorthodonticsreliabilityvalidity

Identifiers

PMID39803929
PMCPMC12056458

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Registered trials

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.