Evaluating Vitamin C's effect on orthodontic treatment relapse

THE EFFECT OF VITAMIN C ON POST-ORTHODONTIC TREATMENT RELAPSE: A RANDOMIZED CONTROLLED CLINICAL TRIAL

Phase2; Phase3 Interventional University of Alexandria · NCT06146296

This study is testing whether Vitamin C can help adults who have just finished braces keep their teeth in place better, using either injections or pills.

Quick facts

PhasePhase2; Phase3
Study typeInterventional
Enrollment36 (estimated)
Ages19 Years to 25 Years
SexAll
SponsorUniversity of Alexandria Academic / other
Drugs / interventionschemotherapy
Locations1 site (Alexandria)
Trial IDNCT06146296 on ClinicalTrials.gov

What this trial studies

This study aims to assess the impact of Vitamin C on preventing relapse after orthodontic treatment. It compares two methods of administration: local injections and oral supplements. The participants will be adults who have completed non-extraction orthodontic treatment using fixed appliances and have good oral hygiene. The study will monitor the effectiveness of Vitamin C in maintaining tooth positioning post-treatment.

Who should consider this trial

Good fit: Ideal candidates are adults who have completed non-extraction orthodontic treatment with fixed appliances and maintain good oral hygiene.

Not a fit: Patients with certain chronic diseases, those requiring specific types of retainers, or those who are pregnant or lactating may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a new method to reduce orthodontic relapse, improving long-term treatment outcomes for patients.

How similar studies have performed: While the specific approach of using Vitamin C for this purpose may be novel, similar studies on post-orthodontic treatment relapse have shown varying degrees of success with different interventions.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients who were indicated for non-extraction orthodontic treatment.
* Adult patients with finished orthodontic treatment, using fixed appliance therapy.
* Patients with good oral hygiene, and a healthy periodontal condition.

Exclusion Criteria:

* Patients who received sectional fixed appliance therapy.
* Patients with hypodontia requiring tooth replacement in the retainer, as a temporary measure.
* Patients requiring fixed bonded retainers.
* Pregnant and lactating women.
* Patients with hereditary hemochromatosis.
* Cancer patients, receiving chemotherapy.
* Patients with chronic diseases such as diabetes, or those receiving drugs such as corticosteroids, both of which that may affect tooth movement.

Where this trial is running

Alexandria

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Orthodontic Relapse
Last reviewed 2026-06-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.