Speed of Premolar Extraction Space Closure: Every Visit Replacement of Working Archwire (NCT04549987) | Clinical Trial Compass
CompletedNot Applicable
Speed of Premolar Extraction Space Closure: Every Visit Replacement of Working Archwire
Jordan28 participantsStarted 2018-12-01
Plain-language summary
The aims of this trial were to assess the effect of changing 0.019X0.025-inch SS working archwire monthly on the rate of space closure, to compare the frictional resistance of unchanged and new working archwires in-vitro, and to assess its effect on the rate of space closure, to record the amount of ion concentration in the saliva before orthodontic treatment, before space closure and one month after space closure.
Who can participate
Age range
16 Years – 30 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Age ≥ 16 years
* Proclined upper and lower incisors (Ui/max \>115 o, Li/mand \>99o)
* Mild upper and lower arch crowding (\<4mm) or no crowding
* Need for upper and lower first premolars extraction
* Skeletal I malocclusion (1\<ANB \<5)
* Average lower facial height and maxillomandibular plane angle (22 o \<MM\<32 o)
* Class I canine relationship
* Good oral hygiene and healthy periodontium
Exclusion Criteria:
* Poor oral hygiene
* Diseases and medications that were likely to affect bone biology
* Previous orthodontic treatment
* Evidence of bone loss
* Active periodontal disease
* Smoking
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
The amount of space closure per month
Timeframe: 3 months
Trial details
NCT IDNCT04549987
SponsorJordan University of Science and Technology