ArticleClinical oral investigations2024
Upper airway hydrodynamics changes after molar distalization with aligners in adult patients.
Article in Clinical oral investigations, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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.
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.
Who cites it
1 citing paper in PubMed.
- Impact of Molar Teeth Distalization by Clear Aligners on the Temporomandibular Joint: Systematic Review and Meta-Analysis.Journal of clinical medicine · 2025Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
Abstract
objectivesThe aim of this study was to evaluate the changes of upper airway ventilation function after molar distalization with aligners in adult patients by computational fluid dynamic simulation. MATERIALS AND
methodsA total of 15 subjects were included (3 males and 12 females, with an average age of 20.00 ± 0.50 years) who required en masse distal movement of the whole dentition using Invisalign aligners. The software Mimics 19.0 was used to reconstruct the upper airway based on their CBCT images and measure the minimum cross-sectional area and volume before and after treatment. Then the upper airway flow during inspirations was simulated and evaluated using Ansys software. At last, the morphologic and hydrodynamic parameters before and after treatment were compared using paired T-test.
resultsFor morphological evaluation, the volume changes of velopharynx, glossopharynx and hypopharynx volume revealed no statistically significance after treatment compared to the data before treatment, the minimum cross section of upper airway decreased significantly. For hydrodynamics parameters, the minimum pressure, maximum shear force, velopharynx and glossopharynx pressure drop increased 50.2 Pa, 0.66 Pa, 5.78 Pa and 5.32 Pa respectively. At last, the correlation analysis between CFD data and MCA is of no statistical significance.
conclusionNon-extraction molar distalization using invisible aligners and mini-screws may lead to adverse changes in upper airway fluid dynamics, potentially increasing the risk of pharyngeal collapse. CLINICAL RELEVANCE: The combination of invisible appliances with anchorage implants for the distalization of maxillary and/or mandibular teeth has emerged as a prevalent orthodontic technique. Clinicians should consider the potential impact on respiratory function when contemplating such treatment for patients with pre-existing respiratory conditions or those at a higher risk of ventilation issues.
Indexed as
Identifiers
39505792What OpenQuestion holds
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.