Trial reportJournal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie2020
Computerized occlusal analysis of Essix and Hawley retainers used during the retention phase: a controlled clinical trial.
Trial report in Journal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.
What it found
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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, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.
- Retention procedures for stabilising tooth position after treatment with orthodontic braces.The Cochrane database of systematic reviews · 2023Pooled it
- Masticatory muscle activity and oral health-related quality of life in patients wearing clear thermoplastic versus wrap-around retainers : A randomized controlled trial.Journal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie · 2024Trial
- Time-dependent adaptation and clinical efficacy of complete dentures: evidence from a Bayesian mixed-effects model.BMC oral health · 2026Article
- Dimensional behaviors of direct-printed versus thermoformed clear retainers in relation to changes of inter-piece occlusal contact distribution measured by T-scan after intraoral aging: a prospective clinical study.Progress in orthodontics · 2026Article
- Changes in the distribution of occlusal forces in the course of the orthodontic retention phase : A prospective cohort study.Journal of orofacial orthopedics = Fortschritte der Kieferorthopadie : Organ/official journal Deutsche Gesellschaft fur Kieferorthopadie · 2025Article
- Retention Force Comparison between Hawley and Vacuum-Formed Retainers in Orthodontic Treatment of Maxillary Arch: A Prospective, Non-randomized, Cohort Study over 6 Months : Comparing Retention Force of Hawley and Vacuum Formed Retainers.Galen medical journal · 2024Article
- Review
- Article
- Orthodontic retention protocols: an evidence-based overview.British dental journal · 2021Article
- Effect of occlusal adjustment on post-orthodontic relapse in extraction cases: a randomized clinical trial.Revista cientifica odontologica (Universidad Cientifica del Sur)Article
- Occlusal contact area changes with different retention protocols using T-Scan III: An observational study.Revista cientifica odontologica (Universidad Cientifica del Sur)Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
aimThe aim of this study was to evaluate the occlusal force distribution (OFD), individual tooth force (ITF), and occlusal surface area (OSA) of Essix and Hawley retainers, using T‑Scan III (Tekscan Inc., South Boston, MA, USA) analysis. MATERIALS AND
methodsA total of 35 subjects were randomly assigned to one of the retention groups following fixed orthodontic treatment. While 18 of these subjects were provided with Essix retainers, 17 were given Hawley retainers. Computerized occlusal analysis of the patients' dentitions was performed using T‑Scan III. The evaluations were made after debonding (T0) and at month 3 (T1), month 6 (T2) and 1 year (T3) after the retention phase.
resultsThe changes in OFD were significant only in the Hawley group for the left/right half jaws and the right posterior quadrants when comparing the T2-T3 time interval. Also, the differences between the groups were significant only for the left half jaw for the T0-T2 time interval and for the right half jaw when comparing the T0-T2 and the T2-T3 time intervals. The changes in ITF were insignificant within groups, but significant between the groups for tooth 11 and 22. Although there was an increase observed in OSA for both groups, the difference between the groups was insignificant. However, the OSA increase in the Essix group for the left/right anterior quadrants was significant only for the T0-T2 and the T0-T3 time intervals, while in both groups, for the posterior left quadrant, the OSA was insignificant only for the T0-T1 time interval.
conclusionsAlthough OSA increased when using both retention appliances, OFD did not change.
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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.