CompletedNot Applicable

The Reliability and Validity of Little's Irregularity Index Assessment

Egypt20 participantsStarted 2021-06-01

Plain-language summary

The primary aim of the current study was to estimate the validity, reliability, and repeatability of LII measurements

Who can participate

Age range

13 Years – 18 Years

Sex

FEMALE

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: * Standardized study models for patients with a full set of permanent teeth (the third molars are not considered). * All study models for patients with Angle class I malocclusion. * All study models for patients with mild to moderate anterior teeth crowding in both arches * Corresponding standardized direct scanned intraoral digital models for all selected study models * Corresponding standardized digital photos for all selected study models * Corresponding standardized digital intra-oral photos for all selected study models Exclusion criteria: * Damaged or distorted study models * Unclear or distorted digital models (STL file) * Unclear or distorted digital photos of study models (JPG File) * Unclear or distorted intra-oral photos (JPG File)

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

validity, reliability, and repeatability of Little's Irregularity Index measurements

Timeframe: 3 months

Trial details

NCT IDNCT07745855

SponsorAl-Azhar University

Sponsor typeOTHER

Study typeOBSERVATIONAL

Primary completion2023-12-30

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