Evidence map›Paper›PMID 40698883›Full record

Trial reportOrthodontics & craniofacial research2025

Treatment Effects and Treatment Time in Adolescents With Crowded and Displaced Teeth Treated With Fixed Appliance Systems Without Extractions: A Multi-Centre Randomised Controlled Trial.

Linda Bokander Matilainen, Kristina Johansson, Michal Wiaderny, Anna Brechter, Sofia Petrén, Vincenzo D'Antò, Liselotte Paulsson

Registry-linked trialAbstract readRandomized Controlled TrialMulticenter Study
PubMed Full text at PMC Publisher
In one paragraph

Trial report 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 NCT05664282 (Orthodontic Treatment in Adolescents With Crowding and Displaced Teeth From the Clinical, the Patients' and Economic Perspectives), which is not on this 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.

NCT05664282 naactive not recruitingnot on this map

Orthodontic Treatment in Adolescents With Crowding and Displaced Teeth From the Clinical, the Patients' and Economic Perspectives

TypeinterventionalSponsorMalmö UniversityRan2016 to 2027Enrolled131ConditionsCrowding, Tooth, OrthodonticArmsDamon self-ligating brackets, Victory self-ligating brackets
3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Trial
  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

7 authors.

Linda Bokander MatilainenFaculty of Odontology, Malmö University, Malmö, Sweden.ORCID https://orcid.org/0009-0004-6558-8340
Kristina JohanssonFaculty of Odontology, Malmö University, Malmö, Sweden.ORCID https://orcid.org/0000-0001-7240-1776
Michal WiadernyDepartment of Orthodontics, Folktandvården Dalarna, Falun, Sweden.
Anna BrechterPrivate Orthodontic Practice, Bernhold Ortodonti, Helsingborg, Sweden.
Sofia PetrénFaculty of Odontology, Malmö University, Malmö, Sweden.
Vincenzo D'AntòDepartment of Neurosciences, Reproductive Sciences and Oral Sciences, School of Orthodontics, University of Naples Federico II, Naples, Italy.
Liselotte PaulssonFaculty of Odontology, Malmö University, Malmö, Sweden.

Funding

Region Dalarna LD 18/04572Region Dalarna RD 20/03073Region Jämtland Härjedalen 968460Region Jämtland Härjedalen JLL 940048Region Skåne OFRS OFRS980535Region Skåne OFRS OFRS993819
6 · The paper itself

Abstract

objectivesTo assess and compare treatment effects and treatment time in adolescents with crowded and displaced teeth during and after non-extraction treatments using a passive self-ligating bracket system (PSLB) and a conventional bracket system (CB). MATERIALS AND

methodsConsecutive adolescents (12-17 years old) with crowded and displaced teeth were randomised through computer generated block randomisation in a two-arm parallel-group design, to non-extraction fixed appliance treatment with either PSLB (Damon Q, n = 62) or CB (Victory, n = 70) at four orthodontic clinics. Study models and cephalograms were collected at baseline, post-alignment and post-treatment. Primary outcome was assessed with weighted Peer Assessment Rating index (wPAR) and secondary outcomes with Little's Irregularity Index (LII), and as transversal width (mm), incisor inclination (°), position (mm) and treatment time (months).

resultsIntergroup differences in wPAR with mean score reductions of -24.07 (CB) and -22.11 (PSLB), LII upper/lower arch reductions of -9.02/-5.96 (CB) and -8.44/-5.29 (PSLB), and mean treatment times of 21.74 (CB) and 24.35 (PSLB) months were non-significant (NS). Lateral expansion was greater in the PSLB group during alignment; mean intergroup maxillary differences (MD) were 1.35 at inter-canines, 1.21 mm at first inter-premolars, and mandibular MD were 0.75 at first, 0.76 mm at second inter-premolars (p ≤ 0.019). Greater incisor proclination was observed in the CB group (L1NB, MD = 2.28°; ILiML, MD = 2.23°) (p ≤ 0.016). Intergroup differences post-treatment were NS.

conclusionGreat occlusal treatment outcomes were observed in both groups with no significant difference in treatment time. Although the expansion patterns differed during alignment, no significant intergroup difference remained after treatment.

trial registrationThe protocol is registered on ClinicalTrials.gov (NCT05664282).

Indexed as

MalocclusionOrthodontic Appliances, FixedOrthodontic BracketsTooth AvulsionAdolescentCephalometryChildFemaleHumansIncisorMaleOrthodontic Appliance DesignTime FactorsTooth Movement TechniquesTreatment Outcomeadolescentsmalocclusionorthodontic appliancesRCTtreatment outcome

Identifiers

PMID40698883
PMCPMC12603669

What OpenQuestion holds

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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.