Why do nickel-titanium archwires fracture intraorally? Fractographic analysis and failure mechanism of in-vivo fractured wires.
Spiros Zinelis, Theodore Eliades, Nikolaos Pandis...
https://pubmed.ncbi.nlm.nih.gov/17628255Actively Recruiting
Led by International Islamic University Malaysia · Updated on 2026-05-13
38
Participants Needed
1
Research Sites
13 weeks
Total Duration
Researchers are evaluating the clinical and patient-reported effects of using lacebacks during the alignment phase of orthodontic fixed appliance treatment for patients with malocclusion. The study aims to understand how lacebacks influence oral hygiene, the frequency of archwire and laceback complications, and pain experienced by patients. This trial uses a split-mouth design where one side of the mouth receives lacebacks and the other side does not, allowing direct comparison within each participant. Participants will receive standard braces, and one side of their mouth will be randomly assigned to have lacebacks placed on both upper and lower arches, while the other side will not. After braces placement, lacebacks are applied one week later, with baseline oral hygiene measured at that time. Participants continue usual oral hygiene practices while researchers monitor complications and pain over an 8-week period, collecting data at 4 and 8 weeks through plaque scoring, pain diaries, and records of any device issues. During the study, participants must report any suspected breakages or loose components for emergency visits. Pain levels are recorded at multiple time points using a pain diary with a visual scale. Researchers assess oral hygiene with the Orthodontic Plaque Index and track archwire and laceback complications throughout. The total participation includes initial placement, two follow-up visits at 4 and 8 weeks, and ongoing monitoring of symptoms and complications during this period.
CONDITIONS
Evaluation of Clinical and Patient-Reported Outcomes of Laceback
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You will not qualify if you...
Complete this quick 3-step screening to check your eligibility
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - 8 weeks
Participants receive fixed orthodontic braces. One week after braces are put on, laceback is placed on one side of the oral cavity as assigned. Participants carry out usual oral hygiene practices and fill a pain diary for 4 weeks at specific time points.
1 visit to place laceback and baseline records, then emergency visits as needed
Duration - Up to 2 visits over 8 weeks
Participants return for recall visits at 4 weeks and 8 weeks after laceback placement for collection of pain diaries, plaque scoring, and assessment of any archwire or laceback complications.
2 visits (in-person)
Total: 1 location
1
Department of Orthodontics, Kulliyah of Dentistry, International Islamic University Malaysia
Kuantan, Pahang, Malaysia, 25200
Actively Recruiting
D
Dr. Tan Loon Han
A
Assistant Professor Dr. Siti Hajjar Binti Nasir
Study Type
INTERVENTIONAL
Masking
SINGLE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
SUPPORTIVE_CARE
Number of Arms
2
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