An interventional study of Elastomeric chain and Elastics in Elastic Chains and Elastics, sponsored by Sana'a University. Completed at 1 site in Yemen. Open to participants aged 14 Years to 25 Years. Per ClinicalTrials.gov, last updated 2025-09-02.
Sponsored by Sana'a University · Not applicable, Interventional, and Treatment
This clinical study aimed to evaluate the effectiveness of Elastics and Elastic chains in maxillary canine retraction. Participants of this study were patients undergoing maxillary canine retraction after first premolar extraction. The study aimed to determine an effective method for better controlling tooth movement.
This study was initiated on 01-2024. Initially, I was not aware of the importance of early registration on ClinicalTrials.gov. Registration was completed after the study began to ensure transparency and adherence to ethical guidelines. All study procedures and protocols have been conducted under the supervision of the academic advisor. All study procedures and protocols have been followed according to institutional and ethical guidelines
This split-mouth Randomized clinical trial was conducted on 33 patients who needed maxillary canine retraction. Participants were randomly selected one side to receive an elastic chain and the other for elastics, as a method for canine retraction. The intervention period lasted for 15 weeks, and the elastics were replaced by the patient every three days, while elastic chains were exchanged by the principal investigator at 5-week appointments. The type of movement that occurred with each method was evaluated to measure the rate of tooth movement, tipping, and rotation resulting. The study was conducted under the supervision and approval of the Research Ethics Committee at Sana'a University, Faculty of Dentistry. All procedures were performed according to the approved protocol, ensuring participant safety and data accuracy.
Sana'a University is the lead sponsor of 27 studies on the registry; 15 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
This side received maxillary canine retraction using elastic chains
Procedure: Elastomeric chain
This side received maxillary canine retraction with Elastics on the contralateral side of the arch
Procedure: Elastics
Elastic chain used to apply force that is capable of canine retraction. The chains were attached between canine bracket and molar band on the side that selected Randomly.
Also known as: Elastic chains, Power chain
Elastics were used to bring a continuous force for maxillary canine retraction in orthodontic patients. Elastics were stretched between the canine bracket and the molar band to retract the canine distally
Also known as: Elastic band, Intramaxillary elastic
Rate of maxillary canine retraction by elastics and elastic chains on each side
The canine retraction rate was measured on superimposed digital casts of pre and post retraction models.
Time frame: Difference between pe and post retraction canine position during 15 weeks
Measurement of the Tipping movement occurred by each method
Tipping angle on each side was measured on Orthopantomograms (OPG).
Time frame: Pre and post retraction during 15 weeks
Measurements of rotation resulted by elastic and elastic chain
The rotational angle was measured on each side by the digital models
Time frame: Pre and post-retraction during 25 weeks
PDFs hosted by the registry, ClinicalTrials.gov.
Plan to share: Yes — I plan to share de-identified individual participant data (IPD) related to the main outcomes of this study. The data will be available upon reasonable request and after the results are published. Only researchers with valid proposals will be allowed access. Data will be shared through secure methods and only for academic purposes
Supporting information: Study protocol, Statistical analysis plan, Informed consent form
Time frame: Start Date: 01-Jan-2026 End Date: 31-Dec-2030
Access criteria: Qualified researchers who submit a valid research proposal will be able to access de-identified individual participant data, including digital models and treatment outcome measurements. Data will be available through a secure online repository upon approval of the research proposal.
Ran from Jan 2024 to primary completion in Apr 2025, 14 months.
How these figures are worked out, and which studies are left out of them.
This study is completed, as verified in Aug 2025. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Sana'a University