Trial reportThe Angle orthodontist2021
Orthopedic outcomes of hybrid and conventional Hyrax expanders.
Trial report in The Angle orthodontist, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 3 of them syntheses that pooled 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.
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
14 citing papers in PubMed, 3 syntheses or guidelines pooled it, 33 citations in OpenAlex.
- Long-Term Effects of Three Different Appliances for Rapid Maxillary Expansion: A Systematic Review and Meta-Analysis.International dental journal · 2026Pooled it
- Comparative Three Dimensional Evaluation of Skeletal and Dento-Alveolar Effects Between Tooth-Borne and Bone-Anchored Maxillary Expansion for Growing Patients-A Systematic Review and Meta-Analysis.Orthodontics & craniofacial research · 2025Pooled it
- Orthodontic treatment for posterior crossbites.The Cochrane database of systematic reviews · 2021Pooled it
- Comparison of alveolar bone morphology after expansion with hybrid and conventional Hyrax expanders.The Angle orthodontist · 2024Trial
- Dentoalveolar outcomes and the long-term stability of tooth-tissue-borne versus bone-tissue-borne rapid maxillary expansion in growing patients: A 5.8-year follow-up.Korean journal of orthodontics · 2026Article
- Investigation of the Effects of Tooth-Borne, Tooth-Bone-Borne and Bone-Borne Rapid Maxillary Expansion Appliances on the Nasomaxillary Complex Using CBCT.Turkish journal of orthodontics · 2026Article
- Relationship Between Maxillary Transverse Deficiency and Respiratory Problems: A Systematic Review of the Effectiveness of Devices over the Past Decade.Journal of clinical medicine · 2025Review
- Review
- Changes and Correlations Between the Width and Height of the Hard Palate During Rapid Maxillary Expansion with a Printed Tooth-Borne Expander.Healthcare (Basel, Switzerland) · 2025Article
- Evaluation of condylar dimension and position following rapid maxillary expansion with tooth- or tooth-bone-borne appliances.Korean journal of orthodontics · 2024Article
- Miniscrew-Assisted Rapid Palatal Expansion: A Scoping Review of Influencing Factors, Side Effects, and Soft Tissue Alterations.Biomedicines · 2024Article
- Review
- Comparison of the short-term effects of tooth-bone-borne and tooth-borne rapid maxillary expansion in older adolescents.Journal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie · 2024Article
- Comparison of Two Chosen 3D Printing Resins Designed for Orthodontic Use: An In Vitro Study.Materials (Basel, Switzerland) · 2023Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesTo compare the effects of a hybrid miniscrew-supported expander versus a conventional Hyrax (CH) expander in growing patients. MATERIALS AND
methodsForty patients were randomized into two groups: a hybrid Hyrax (HH) expander group using a Hyrax expander with two miniscrews and a CH expander group. The final sample had 18 subjects (8 female, 10 male; initial age of 10.8 years) in the HH group and 14 subjects (6 female, 8 male; initial age of 11.4 years) in the CH group. Cone-beam computed tomography examinations and digital dental models were obtained before expansion and 11 months postexpansion. The primary outcomes included the orthopedic transverse effects of expansion. Intergroup comparison was performed using analysis of covariance (P < .05).
resultsSignificantly greater increases in the nasal cavity width, maxillary width, and buccal alveolar crest width were found for the HH group. No intergroup differences were observed for dental arch width or shape changes.
conclusionsThe HH group showed greater increases in the nasal cavity width, maxillary width, and buccal alveolar crest width. No differences were observed for intermolar, interpremolar, or intercanine widths; arch length; or arch perimeter. Arch size and shape showed similar changes in both groups.
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What 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.