Gum retraction with cord versus 25% aluminum chloride gel for crown and bridge work
Comparison of Effectiveness of Gingival Displacement Using Retraction Cord and Aluminum Chloride Gel
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 |
| Enrollment | 66 (estimated) |
| Ages | 18 Years to 50 Years |
| Sex | All |
| Sponsor | Dow University of Health Sciences Academic / other |
| Locations | 1 site (Karachi, Sindh) |
| Trial ID | NCT07255976 on ClinicalTrials.gov |
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.
Who should consider this trial
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.
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.
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 performed: 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.
Eligibility criteria
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 this trial is running
Karachi, Sindh
- 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
How to participate
- Review the eligibility criteria above with your treating physician.
- Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
- Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.