Evidence map›Paper›PMID 39517360›Full record

ReviewHealthcare (Basel, Switzerland)2024

Effects of Hyrax Maxillary Expander on Nasal Cavity and Upper Airway in Adolescents: A Systematic Review and Meta-Analysis.

Zihe Zhao, Rongkai Cao, Mengze Yao, Chongshan Liao

Abstract readReview
PubMed Full text at PMC Publisher
In one paragraph

Review in Healthcare (Basel, Switzerland), 2024. 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. Trial
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.

Zihe ZhaoShanghai Engineering Research Center of Tooth Restoration and Regeneration, Tongji Research Institute of Stomatology, Stomatological Hospital and Dental School, Tongji University, Shanghai 200072, China.
Rongkai CaoShanghai Engineering Research Center of Tooth Restoration and Regeneration, Tongji Research Institute of Stomatology, Stomatological Hospital and Dental School, Tongji University, Shanghai 200072, China.ORCID 0000-0001-9116-098X
Mengze YaoShanghai Engineering Research Center of Tooth Restoration and Regeneration, Tongji Research Institute of Stomatology, Stomatological Hospital and Dental School, Tongji University, Shanghai 200072, China.
Chongshan LiaoShanghai Engineering Research Center of Tooth Restoration and Regeneration, Tongji Research Institute of Stomatology, Stomatological Hospital and Dental School, Tongji University, Shanghai 200072, China.ORCID 0000-0001-7494-5515

Funding

China Oral Health Foundation A2023-029Chinese Stomatological Association Young Talent Project of Orthodontics, COS-B202105Fundamental Research Funds for the Central Universities 22120240282National Natural Science Foundation of China 82001008National Natural Science Foundation of China 82470956Shanghai Municipal Health Commission JKKPZX-2023-A07
6 · The paper itself

Abstract

backgroundWhether Hyrax maxillary expander is an effective treatment for maxillary transverse deficiency as well as expansion of the upper airway is still controversial. The study's purpose was to evaluate 3D changes in upper airway dimensions of adolescent patients measured primarily by cone-beam computed tomography (CBCT) after rapid maxillary expansion (RME) with the Hyrax maxillary expander.

methodsStudies up to 1 April 2024 were searched in the following databases: PubMed/MEDICINE, Web of Science, Cochrane Library, and Embase. Inclusion criteria were clinical trials and cohort studies that assessed the effect of RME in adolescent patients with upper airway stenosis using CBCT-based three-dimensional analysis. The risk of bias in the study outcomes was assessed using the Cochrane Collaboration's risk of bias tool, the GRADE method, and a tool for evaluating non-randomized controlled study (non-RCT) literature from a previous systematic review, depending on the types of articles. The study was reported in accordance with PRISMA guidelines.

resultsThe study conducted a random effects meta-analysis of mean differences and 95% confidence intervals for changes in upper airway volumes, including the nasal cavity (NC), in the outcomes of 16 included studies, followed by subgroup analyses.

conclusionA significant increase in nasopharynx volume was observed after rapid maxillary expansion (RME) by Hyrax maxillary expander (MD = 0.69, 95% CI (0.09~1.28),

Indexed as

hyrax expandernasal cavityrapid maxillary expansionupper airway

Identifiers

PMID39517360
PMCPMC11544907

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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.