Clinical trial Recruiting at 1 site Interventional

Hydroxyapatite toothpaste and mouthwash to prevent white spot lesions during orthodontic treatment

Official title: Effectiveness of a Hydroxyapatite-Containing Toothpaste Versus Mouthwash in Preventing White-Spot Lesions During Fixed-Appliance Orthodontic Treatment: A Randomized Clinical Trial

Run by University of Baghdad · NCT07325643 · Data updated 2026-11-12

This test will see if using hydroxyapatite toothpaste or mouthwash can prevent white spot lesions in people wearing braces.

Quick facts

Study typeInterventional
SexAll
Enrollment75 (estimated)
SponsorUniversity of Baghdad
Academic / other
Locations1 site (Baghdad)
StatusRecruiting
StartedNovember 20, 2025
Main results expectedNovember 20, 2026
Study endsDecember 20, 2026
Registry record updatedJanuary 8, 2026
Trial IDNCT07325643 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are patients beginning comprehensive fixed-appliance orthodontic treatment with full permanent dentition, good oral hygiene, normal salivary flow and buffer capacity, and no existing white spot lesions.

Probably not a fit

Patients who already have white spot lesions, poor oral hygiene, recent bleaching or topical fluoridation, significant dental restorations on the study teeth, or certain systemic conditions are unlikely to benefit from this prevention-focused intervention.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This randomized three-group study will enroll 75 orthodontic patients without existing white spot lesions and follow them throughout their fixed-appliance treatment. Participants will be assigned to hydroxyapatite toothpaste with placebo rinse, fluoride toothpaste with hydroxyapatite rinse, or fluoride toothpaste with placebo rinse. Outcomes include Diagnodent Pen readings, Gorlick index, digital photos, gingival bleeding and plaque indices, and salivary pH measured over the course of treatment. The interventions are low-risk topical products and the study is conducted at the University of Baghdad College of Dentistry under ethical approval.

Why it matters

Potential benefit: If successful, hydroxyapatite products could reduce the new development of white spot lesions around orthodontic brackets and help preserve tooth enamel and appearance.

How similar studies have gone: Previous research has shown hydroxyapatite can help remineralize enamel and reduce sensitivity, but evidence specifically for preventing white spot lesions during orthodontic treatment is limited and mixed.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria: All included participants will be drawn from those who will receive comprehensive orthodontic treatment and fulfill the following inclusion criteria:

1. Complete permanent dentition up to the first premolar, with no intended extractions in orthodontic treatment plan.
2. Good overall health.
3. Good oral hygiene: full-mouth plaque score \< 20%.
4. No bleeding upon probing after 30 seconds.
5. Discontinuous band of plaque at the gingival margin.
6. Normal stimulated salivary flow rate.
7. Normal buffer capacity (final pH between 6.0 and 7.0) -

Exclusion Criteria:

* 1\. History of previous orthodontic treatment. 2. Bleaching or topical fluoridation within the last six months. 3. Severely rotated any of the study teeth (limiting the appearance of facial surfaces).

  4\. Visible signs of caries, fluorosis, hypocalcification, or other developmental defects. 5. Restoration on the labial surface of the study teeth. 6. Systemic or endocrine conditions (e.g., cardiac pacemakers, diabetes mellitus).

  7\. Craniofacial anomalies and clefts.

Where it's running

  • University of Baghdad - College of Dentistry / Orthodontic Clinic
    Baghdad, Iraq
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.