Evidence map›Paper›PMID 34187487›Full record

ArticleHead & face medicine2021

Class II correction by maxillary en masse distalization using a completely customized lingual appliance and a novel mini-screw anchorage concept - preliminary results.

Frauke Beyling, Elisabeth Klang, Eva Niehoff, Rainer Schwestka-Polly, Hans-Joachim Helms, Dirk Wiechmann

Open access · goldAbstract read
In one paragraph

Article in Head & face medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
2.8field-weighted citation impact, top 9% 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

13 citing papers in PubMed, 23 citations in OpenAlex.

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  8. Novel concept for posterior crossbite correction : Preliminary results.Journal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie · 2025
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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

6 authors at 4 institutions in 1 country.

Frauke BeylingPrivate Practice, Kieferorthopädische Fachpraxis, Lindenstraße 44, 49152, Bad Essen, Germany. beyling@kfo-badessen.de.ORCID http://orcid.org/0000-0002-6644-6879
Elisabeth KlangPrivate Practice, Kieferorthopädische Fachpraxis, Lindenstraße 44, 49152, Bad Essen, Germany.
Eva NiehoffPrivate Practice, Kieferorthopädische Fachpraxis, Lindenstraße 44, 49152, Bad Essen, Germany.
Rainer Schwestka-PollyDepartment of Orthodontics, Hannover Medical School (MHH), Hannover, Germany.
Hans-Joachim HelmsDepartment of Medical Statistics, University Medical Center Göttingen (UMG), Göttingen, Germany.
Dirk WiechmannPrivate Practice, Kieferorthopädische Fachpraxis, Lindenstraße 44, 49152, Bad Essen, Germany.
Medizinische Hochschule Hannover · DELinde (Germany) · DEPoliklinik für Zahnärztliche Prothetik · DEUniversitätsmedizin Göttingen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe aim of the study was to evaluate the efficacy of a novel en masse distalization method in the maxillary arch in combination with a completely customized lingual appliance (CCLA; WIN, DW Lingual Systems, Germany). Therefore, we tested the null-hypothesis of a significant deviation from an Angle-Class I canine relationship and a normal overjet defined by an individual target set-up after dentoalveolar compensation in Angle Class II subjects.

methodsThis retrospective study included 23 patients, (m/f 3/20, mean age 29.6 years (min/max, 13.6/50.9 years)), with inclusion criteria of an Angle Class II occlusion of more than half a cusp prior to en masse distalization and treatment completed consecutively with a CCLA in combination with a mini-screw (MS) anchorage for uni- or bilateral maxillary distalization (12 bilateral situations, totalling 35). Plaster casts taken prior to (T0) and following CCLA treatment (T3) were compared with the treatment plan / set-up (TxP, with a Class I canine relationship and a normal overjet as the treatment objective). MSs were placed following levelling and aligning (T1) and removed at the end of en masse distalization at T2. Statistical analysis was carried out using Schuirmann's TOST [two one-sided tests] equivalence test, based on a one-sample t-test with α = 0.025 on each side (total α = 0.05).

resultsNinety-seven percent of planned correction of the canine relationship was achieved (mean 3.6 of 3.7 mm) and also 97 % of the planned overjet correction (mean 3.1 of 3.2 mm), with a statistically significant equivalence (p < 0.0001) for canine relationship and overjet between the individual treatment plan (set-up) and the final outcome. Adverse effects were limited to the loss of n = 2 of 35 mini-screws. However, in each instance, the treatment was completed, as scheduled, without replacing them. Accordingly, the null-hypothesis was rejected.

conclusionsThe technique presented allows for a predictable correction of an Angle-Class II malocclusion via dentoalveolar compensation with maxillary en masse distalization.

Indexed as

Malocclusion, Angle Class IIOrthodontic Anchorage ProceduresAdultBone ScrewsCephalometryGermanyHumansMaxillaOrthodontic Appliance DesignRetrospective StudiesTooth Movement TechniquesAnchorageClass II correctionDistalizationLingual appliancesLingual orthodonticsMini-screwsTADs

Identifiers

PMID34187487
PMCPMC8240392
OpenAlexW3175319621

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.