Gum retraction with cord versus 25% aluminum chloride gel for crown and bridge work
Official title: Comparison of Effectiveness of Gingival Displacement Using Retraction Cord and Aluminum Chloride Gel
Run by Dow University of Health Sciences · NCT07255976 · Data updated 2026-11-12
This test will compare a knitted retraction cord and a 25% aluminum chloride gel for getting good gum displacement, quicker placement, and less bleeding in adults 18–50 who need a fixed prosthesis with at least two abutments.
Quick facts
| Phase | Phase 4 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years to 50 Years |
| Sex | All |
| Enrollment | 66 (estimated) |
| Sponsor | Dow University of Health Sciences Academic / other |
| Locations | 1 site (Karachi, Sindh) |
| Status | Recruiting |
| Started | September 11, 2024 |
| Main results expected | December 15, 2025 |
| Study ends | December 30, 2025 |
| Registry record updated | December 1, 2025 |
| Trial ID | NCT07255976 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults aged 18–50 who require a fixed prosthesis with at least two abutments, have equigingival finishing lines, healthy gingiva with no bleeding on probing, and no uncontrolled systemic disease are ideal candidates.
✕Probably not a fit
Patients with sub- or supra-gingival margins, periapical pathology or inadequate root canal treatment, probing depths ≥3 mm, bleeding disorders, or uncontrolled diabetes, hypertension, or neurological disease are excluded and unlikely to benefit from these interventions.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Sixty-six adults who need fixed prostheses with a minimum of two abutments and healthy, equigingival gingival margins will be allocated into two parallel groups of 33 each. One group will receive a knitted retraction cord placed around the prepared tooth margins and the other will receive a 25% aluminum chloride gingival retraction gel applied with disposable tips. Outcomes include horizontal gingival displacement, time required for placement, bleeding after retraction, patient discomfort, and the marginal fit quality of the final prosthesis. Procedures and measurements will be performed at a single center by dental clinicians experienced in prosthodontic preparation.
Why it matters
Potential benefit: If successful, the preferred technique could make impression taking for crowns and bridges faster, more comfortable, and improve marginal fit.
How similar studies have gone: Both retraction cords and aluminum chloride-containing gels are established methods for gingival displacement and prior comparisons have shown gels can be similarly effective with less tissue trauma in many cases, though results vary by technique and clinical situation.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: 1. age ranges from 18 to 50 years a fixed prosthesis with minimum of two abutments. 2. minimum of two abutments 3. Finishing line margins will be Equiogingival 4. Clinically healthy gingiva and periodontium. Exclusion Criteria: * 1\. Sub-gingival or supra-gingival margins 2 Periapical pathosis 3. inadequate obturated root canals 4. bleeidng disorder 5.uncontrolled diabetes, 6.hypertension 7.neurological disease
Where it's running
-
Armeen Fakhur
Karachi, Sindh, Pakistan Recruiting
Study contacts
- Principal investigator: Armeen Fakhur, bds — Dow University of Health Sciences
- Study coordinator: Armeen Fakhur, bds
- Email: armeenfakhur.401050@duhs.edu.pk
- Phone: 03439269593
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.