An interventional study of Space closure without changing working archwire monthly and Space closure withchanging working archwire monthly in Orthodontic Appliance, sponsored by Jordan University of Science and Technology. Completed at 1 site in Jordan. Open to participants aged 16 Years to 30 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-09-22.
Sponsored by Jordan University of Science and Technology · Not applicable, Interventional, and Treatment
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.
The aims 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 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 and to compare the rate of teeth movement into fresh and old extraction sites.
Trial design: Randomized controlled clinical trial with a split-mouth design. Setting: Jordan University of Science and Technology(JUST) Postgraduate Dental Teaching Clinics and labs.
Participants and interventions: Twenty-eight subjects with bimaxillary proclination requiring extraction of all first premolar teeth participated in this study. In the upper arch two groups were identified; group 1 having the extraction space closed using the same working archwire throughout 3 visits after insertion, and group 2 with the working archwire changed monthly.
The working archwire in the upper arch was split into 2 halves in the midline and each one half was connected to the other by a wide joining hook. Patients were followed-up monthly for three months. At every follow up visit upper alginate impressions were taken and the working archwire in the upper arch was changed on one side only. Upper follow-up models were scanned using digital scanner and spaces were measured using digital software.
Three unstimulated saliva samples were collected from each patient; prior to commencement of treatment, when 0.019X0.25-inch SS archwire was reached and before space closure and one month after space closure.
The rate of extraction space closure in the upper arch, ion concentration in saliva samples measured using inductively coupled plasma mass spectrometer (ICP-MS) and frictional resistance of the working archwires was measured using universal mechanical testing machine.
Jordan University of Science and Technology is the lead sponsor of 88 studies on the registry; 7 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
Extraction space closed using the same working archwire throughout 3 visits after insertion
Device: Space closure without changing working archwire monthly
The extraction space closed having the working archwire changed monthly.
Device: Space closure withchanging working archwire monthly
Upper premolar space closure using the same 0.019X0.025 stainless steel archwire every month
Upper premolar space closure using new 0.019X0.025 stainless steel archwire every month
The amount of space closure per month
the width of upper extraction space in milimeters
Time frame: 3 months
ion concentration in saliva
Concentration of ions (Chrome, Iron, Nickel, titanium) in saliva
Time frame: through study completion, an average of 1 year
Frictional resistance
A mean value in N for frictional force over a 3 millimeter distance.
Time frame: At the end of the study
Plan to share: No
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This study is completed, as verified in Sep 2020. You cannot join it, but the record below documents what was studied.
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Jordan University of Science and Technology