Evidence map›Paper›PMID 39994811›Full record

Observational studyHead & face medicine2025

Influence of orthodontic archwire (nickel-titanium versus copper-nickel-titanium) on pain in adult patients in the aligning phase of treatment with self-ligating brackets (two months of follow-up): a prospective observational pilot study.

Raquel Marzal, Alberto Albaladejo, Daniel Curto, Adrián Curto

Abstract readObservational Study
In one paragraph

Observational study in Head & face medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Bioinformation · 2026
    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

4 authors.

Raquel MarzalOrthodontics, Faculty of Medicine, University of Salamanca, Salamanca, Spain.
Alberto AlbaladejoDepartment of Surgery, Faculty of Medicine, University of Salamanca, Salamanca, Spain.
Daniel CurtoDepartment of Pathology, 12 De Octubre University Hospital, Madrid, Spain.
Adrián CurtoDepartment of Surgery, Faculty of Medicine, University of Salamanca, Salamanca, Spain. adrian_odonto@usal.es.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe aim of this pilot study was to analyze the influence of a nickel-titanium archwire (NiTi) and a copper-nickel-titanium archwire (Cu-NiTi) on pain levels in adult patients during the first two months of orthodontic treatment with self-ligating brackets.

methodsThis prospective observational pilot study was carried out at the Dental Clinic of the University of Salamanca between 2023 and 2024. This study analyzed 30 adult orthodontic patients who began treatment with self-ligating brackets. The participants were distributed into two study groups (n = 15) for treatment with initial NiTi and Cu-NiTi archwires. At the beginning, a 0.014-inch archwire was used, and a 0.016-inch archwire was used after a month. The level of pain was measured using a visual analog scale (VAS) at the beginning of treatment (T0), at one month (T1), and at two months (T2). At each time point (T0, T1, and T2), pain was measured at baseline and at 4, 24, and 48 h after archwire placement or replacement. The data were analyzed using Spearman's correlation coefficient and the Mann-Whitney test (p < 0.05).

resultsThe mean age of the participants (n = 30) was 31.34 (± 6.05) years. The maximum pain peak was in the first 48 h after placing the initial archwire (5.57 ± 1.72). The age and sex of the participants did not influence the pain levels in the sample studied. The composition of the orthodontic archwire only influenced the pain levels at the beginning of treatment (T0) (p < 0.05); in this case, the NiTi group (1.73 ± 1.53) described a higher level of pain than that of the Cu-NiTi group (1.07 ± 1.36); in the rest of the follow-up period, no significant differences were observed.

conclusionsWithin the limitations of this study, we observed that the orthodontic archwire material (nickel-titanium versus copper-nickel-titanium) only influenced pain levels at the beginning of orthodontic treatment.

Indexed as

CopperNickelOrthodontic BracketsOrthodontic WiresTitaniumAdultFemaleFollow-Up StudiesHumansMalePain MeasurementPilot ProjectsProspective StudiesYoung AdultCopperCopper NiTiNickelTitaniumtitanium nickelideArchwireBracketsCu-NiTiNiTiOrthodonticsPainSelf-ligating bracketsVisual analog scale

Identifiers

PMID39994811
PMCPMC11853181

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Registered trials

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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.