Trial reportThe Angle orthodontist2023
Root resorption during maxillary molar intrusion with clear aligners: a randomized controlled trial.
Trial report in The Angle orthodontist, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 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
11 citing papers in PubMed, 2 syntheses or guidelines pooled it, 16 citations in OpenAlex.
- Clear aligner therapy for adult anterior open bite: a systematic review, descriptive evidence map, and certainty appraisal of reported dentoskeletal changes.BMC oral health · 2026Pooled it
- Adverse effects of removable orthodontic aligners: A systematic review with single-arm meta-analysis.PloS one · 2026Pooled it
- Comparative Evaluation of Modified Vacuum-Formed Aligners Versus Conventional Micro-Implant Anchorage in Molar Intrusion for Pre-Restorative Orthodontics.Orthodontics & craniofacial research · 2026Article
- Crown-root ratio as an indicator for assessing orthodontic treatment-induced external apical root resorption.Journal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie · 2026Article
- Article
- Combined use of clear aligners and mini-screws for intrusion of the maxillary first and second molars before prosthetic restoration: a finite element analysis.BMC oral health · 2026Article
- Incisor extrusion with or without molar intrusion for the correction of anterior open bite with clear aligners and comparison of outcomes with fixed appliances incorporating temporary anchorage devices: A systematic review and meta-analysis.Korean journal of orthodontics · 2026Article
- Temporary Anchorage Devices in Clear Aligner Therapy: A Systematic Review.Bioengineering (Basel, Switzerland) · 2025Review
- Expert consensus on the clinical strategies for orthodontic treatment with clear aligners.International journal of oral science · 2025Review
- Nonsurgical correction of occlusal canting using temporary anchorage devices: A systematic review.Heliyon · 2024Article
- Review
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 at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesTo compare changes in maxillary molar root resorption, intrusion amount, dentoskeletal measures, and maximum bite force (MBF) between clear aligners (CA) and fixed appliances with miniscrew (FM) during molar intrusion. MATERIALS AND
methodsForty adults with anterior open bite were randomized into either CA or FM groups. Lateral cephalograms, cone-beam computed tomography (CBCT), and MBF were collected at pretreatment (T0) and 6 months of treatment (T1). Maxillary molar intrusion in FM were intruded by nickel-titanium (NiTi) closed-coil spring delivered force (150 grams/side) while clear aligners combined with squeezing exercise were performed in CA. Parametric tests were used for statistical analysis.
resultsAfter 6 months of treatment, significant root resorption of 0.21-0.24 mm in CA and 0.38-0.47 mm in FM were found while maxillary molars were intruded 0.68 and 1.49 mm in CA and FM, respectively. CA showed significant less root resorption and intrusion than FM. Overbite, bite closing, and MBF increased significantly. CA showed significantly less overbite and SN-MP changes but more MBF increase than FM. MBF in CA was correlated with the amount of maxillary molar intrusion (r = 0.736, P < .05).
conclusionsMaxillary molar intrusion and root resorption in CA were half the amount in FM in 6 months. The amount of maxillary molar root resorption was one-third of the intrusion distance. CA displayed less overbite increase and bite closing but more MBF increase than FM. MBF in CA was positively correlated with the molar intrusion amount.
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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.