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Effectiveness of Xenogenic Collagen Matrix in Modification of Mucosal Phenotype Around Dental Implants

Effectiveness of Xenogenic Collagen Matrix in Modification of Mucosal Phenotype Around Dental Implants

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07577193
Enrollment
20
Registered
2026-05-11
Start date
2025-10-01
Completion date
2026-12-01
Last updated
2026-05-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Soft Tissue Atrophy

Brief summary

Aim of the study The rationale for conducting the present study is to evaluate the efficacy of porcine collagen matrix in the management of defective width of keratinized mucosa around dental implant.

Detailed description

Therefore, the primary objective is to evaluate the integration of porcine collagen matrix with the recipient site and measuring the amount gained of keratinized mucosa. The secondary objective is to assess the pink esthetic score around dental implant following porcine collagen matrix compared to the free gingiva graft.

Interventions

PROCEDUREAll dental implants will be placed in edentulous the area with application of free gingival graft (Group I) or with incorporation of porcine collagen matrix (Group II).

Group I: All patients will be operated under local anaesthesia;. .. Two vertical releasing incisions delineated the partial thickness flap. The flap will be apically positioned and sutured. A gingival graft will be taken from the hard palate. The graft will be 1 to 2 mm in thickness and its size will be determined depending on recipient size and free from adipose tissue. The graft will be trimmed to adapt to the shape and size of the recipient site then suturing the graft to the recipient sites by using 4-0 vicryl suture. Group II: All patients will be operated under the same local anaesthetic as in group I. Crestal incision will be performed and full thickness mucoperiosteal flap will be reflected just to access the site. Two vertical releasing incisions delineated the partial thickness flap. The flap will be apically positioned and sutured. Porcine collagen matrix will be placed in the recipient site and sutured by using 4-0 vicryl suture.

Sponsors

Mansoura University
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

surgery and give medication

Eligibility

Sex/Gender
ALL
Age
25 Years to 50 Years
Healthy volunteers
No

Inclusion criteria

1. Patient between 25-50 years old. 2. Remaining bone height of more than 8 mm, remaining bone width of 6 mm 3. Inadequate keratinized soft tissue \<2 mm (13). 4. Favorable pattern of occlusion. 5. Good oral hygiene. 6. Patient ability to comply with the required recall visits.

Exclusion criteria

1. Insufficient bone width (less than 6 mm) mesiodistal or buccolingually. 2. Patients having any uncontrolled systemic disease which could affect bone healing. 3. Patients treated with radiotherapy to the head and neck area within the past 12 months. 4. Heavy Smokers (more than 20 cigarette per day) according to WHO. 5. Inability or unwillingness to return for follow-up visits.

Design outcomes

Primary

MeasureTime frameDescription
Clinical3 monthsSurgical Operation Time: Duration of implant site preparation and graft fixation. Unit: Minutes. Time Frame: During surgery.
Clinical Evaluation:3 monthsWound Healing Status: Presence or absence of soft tissue dehiscence or wound infection. Unit: Yes/No. Time Frame: Post-operative follow-up visits.
clinical3 monthsImplant Stability: Implant stability measured using Resonance Frequency Analysis (Osstell). Unit: Implant Stability Quotient (ISQ). Time Frame: Immediately post-placement and at 3 months.

Secondary

MeasureTime frameDescription
Clinical periodontal parameters3 monthsPlaque Index (PI): Dental plaque accumulation around implants measured using the Plaque Index. Unit: PI score. Time Frame: 3 months post-operatively.
clinical parameters3 monthsProbing Depth (PD): Peri-implant probing depth to assess peri-implant tissue health. Unit: mm. Time Frame: 3 months post-operatively.
radiographic6 months1. Implant Position Accuracy Description: Evaluation of the accuracy of dental implant placement in relation to adjacent teeth and surrounding vital anatomical structures using Cone Beam Computed Tomography (CBCT). Unit of Measure: Deviation distance in millimeters (mm) Time Frame: At 6 months post-implant placement 2. Crestal Bone Level Changes - Mesiodistal Description: Measurement of crestal bone level changes in the mesiodistal direction around the dental implant using CBCT. Unit of Measure: Millimeters (mm) Time Frame: At 6 months post-implant placement 3. Crestal Bone Level Changes - Buccolingual Description: Measurement of crestal bone level changes in the buccolingual direction around the dental implant using CBCT. Unit of Measure: Millimeters (mm) Time Frame: At 6 months post-implant placement
clinical perodontal parameters3 monthsClinical Attachment Level (CAL): Measurement from cemento-enamel junction to base of peri-implant sulcus/pocket. Unit: mm. Time Frame: 3 months post-operatively.
clinical periodontal parameters3 monthsKeratinized Tissue Width (KTW): Width of keratinized mucosa around implant site. Unit: mm. Time Frame: 3 months post-operatively.

Countries

Egypt

Contacts

PRINCIPAL_INVESTIGATORmohamad sa haichal, bachelor

faculty of dentistry Mansoura university

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 12, 2026