- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05458271
Cross-linked Volume-stable Collagen Matrix Versus Connective Tissue Graft at Implant Site.
Cross-linked Volume-stable Collagen Matrix Versus Connective Tissue Graft for Soft Tissue Augmentation at Implant Site. A Comparative, Multicentre Randomized Clinical Trial
Recent data suggested that an adequate volume of Keratinized Tissue (KT) around dental implant is a key factor to obtain aesthetic outcomes and to support easy long-term maintenance.
The aim of this RCT is to test the volume-stable collagen matrix (VCMX) vs the Connective Tissue Graft (CTG) for peri-implant soft tissue augmentation during implant uncovering.
Study Overview
Status
Intervention / Treatment
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Luigi Barbato, Dr.
- Phone Number: +393299457556
- Email: luigi.barbato@unifi.it
Study Locations
-
-
FI
-
Firenze, FI, Italy, 50134
- Università degli studi di Firenze
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Age ≥18 years.
- No systemic diseases or pregnancy.
- Self-reported smoking ≤10 cigarettes/day.
- No probing depths ≥5 mm
- Full-mouth plaque score (FMPS) and full-mouth bleeding score (FMBS) ≤15% (measured at four sites per tooth).
- Single dental implant with a scheduled for soft tissue augmentation procedure at the time of uncovering.
- Need of soft tissue augmentation for aesthetic purpose and/or functional reasons
- No previous soft tissue augmentation procedure at experimental site.
Exclusion Criteria:
- General contraindications for dental and/or surgical treatments
- Concurrent or previous immunosuppressant, bisphosphonate or high dose corticosteroid therapy
- Inflammatory and autoimmune disease of oral cavity
- History of myeloma, respiratory tract cancer, breast cancer, prostate cancer or kidney cancer requiring chemotherapy or radiotherapy within the past five years
- Radiotherapy of head area
- Disease or condition affecting connective tissue metabolism (e.g. disease of arteries in the operating zone, bone metabolic diseases, alcohol abuse, treatment with anticoagulants)
- Any systemic diseases that affect bone metabolism (e.g thyroid dysfunction, autoimmune disease)
- Untreated acute periodontal disease
- Patients who smoke more than 10 cigarettes/day will be excluded from the study
- Diabetes
- Allergy to the collagen
- Pregnant or lactating women
- Women of child bearing age, not using a highly effective method of birth control
- Participation in an investigational device, drug or biologic study within the last 24 weeks prior to the study start
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: VCMX
All patients will be treated by scaling/root planing to obtain infection control if needed. In addition, patients will receive oral hygiene instructions. The test group will be treated with add of VCMX. Following the local anesthesia, a split thickness flap will be raised-up to uncover the implant screw. Care will be taken to preserve pre-existing KT amount. A mesio-distal and apical partial thickness dissection will be performed to release residual muscle tension and allow the passive apical displacement of the flap. The randomisation envelope will be then opened. In test group the VCMX will be gently shaped and secured under the flap with suture. Care will be applied to completely cover the xenograft. |
A flap will be raised and VCMX will be placed in order to increase the soft tissue volume
|
Active Comparator: CTG
The control group patients will be treated by flap surgery with add of CTG.
In the control group (APF) a CTG harvested from palate will be secured under the flap with suture.
|
A flap will be raised and a CTG will be harvested from the palate and placed in order to increase the soft tissue volume
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
GT
Time Frame: Immediately After Surgery
|
Changes in the gingival thickness (in mm) measured 1.0 mm coronal to the MGJ using an injection needle, perpendicular to the tissue surface, with a silicon stop over the gingival surface.
|
Immediately After Surgery
|
GT
Time Frame: 1 week After surgery
|
Changes in the gingival thickness (in mm) measured 1.0 mm coronal to the MGJ using an injection needle, perpendicular to the tissue surface, with a silicon stop over the gingival surface.
|
1 week After surgery
|
GT
Time Frame: 2 weeks After surgery
|
Changes in the gingival thickness (in mm) measured 1.0 mm coronal to the MGJ using an injection needle, perpendicular to the tissue surface, with a silicon stop over the gingival surface.
|
2 weeks After surgery
|
GT
Time Frame: 4 weeks After surgery
|
Changes in the gingival thickness (in mm) measured 1.0 mm coronal to the MGJ using an injection needle, perpendicular to the tissue surface, with a silicon stop over the gingival surface.
|
4 weeks After surgery
|
GT
Time Frame: 3 months After surgery
|
Changes in the gingival thickness (in mm) measured 1.0 mm coronal to the MGJ using an injection needle, perpendicular to the tissue surface, with a silicon stop over the gingival surface.
|
3 months After surgery
|
GT
Time Frame: 6 months after surgery
|
Changes in the gingival thickness (in mm) measured 1.0 mm coronal to the MGJ using an injection needle, perpendicular to the tissue surface, with a silicon stop over the gingival surface.
|
6 months after surgery
|
GT
Time Frame: 12 months after surgery
|
Changes in the gingival thickness (in mm) measured 1.0 mm coronal to the MGJ using an injection needle, perpendicular to the tissue surface, with a silicon stop over the gingival surface.
|
12 months after surgery
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
PROMs
Time Frame: Immediately After Surgery
|
After explanation of the post-operative instructions patients will be given an evaluation questionnaire.
Patient discomfort during procedure (from 0 to 10) and the overall judgment about the self-perception of procedure difficulty will be assed using a Visual Analogue Scale (VAS- (from 0 to 100))
|
Immediately After Surgery
|
PROMs
Time Frame: 1 week After surgery
|
After explanation of the post-operative instructions patients will be given an evaluation questionnaire.
Patient discomfort during procedure (from 0 to 10) and the overall judgment about the self-perception of procedure difficulty will be assed using a Visual Analogue Scale (VAS- (from 0 to 100)
|
1 week After surgery
|
PROMs
Time Frame: 2 weeks After surgery
|
After explanation of the post-operative instructions patients will be given an evaluation questionnaire.
Patient discomfort during procedure (from 0 to 10) and the overall judgment about the self-perception of procedure difficulty will be assed using a Visual Analogue Scale (VAS- (from 0 to 100)
|
2 weeks After surgery
|
PROMs
Time Frame: 4 weeks After surgery
|
After explanation of the post-operative instructions patients will be given an evaluation questionnaire.
Patient discomfort during procedure (from 0 to 10) and the overall judgment about the self-perception of procedure difficulty will be assed using a Visual Analogue Scale (VAS- (from 0 to 100)
|
4 weeks After surgery
|
PROMs
Time Frame: 3 months After surgery
|
After explanation of the post-operative instructions patients will be given an evaluation questionnaire.
Patient discomfort during procedure (from 0 to 10) and the overall judgment about the self-perception of procedure difficulty will be assed using a Visual Analogue Scale (VAS- (from 0 to 100)
|
3 months After surgery
|
PROMs
Time Frame: 6 months after surgery
|
After explanation of the post-operative instructions patients will be given an evaluation questionnaire.
Patient discomfort during procedure (from 0 to 10) and the overall judgment about the self-perception of procedure difficulty will be assed using a Visual Analogue Scale (VAS- (from 0 to 100)
|
6 months after surgery
|
PROMs
Time Frame: 12 months after surgery
|
After explanation of the post-operative instructions patients will be given an evaluation questionnaire.
Patient discomfort during procedure (from 0 to 10) and the overall judgment about the self-perception of procedure difficulty will be assed using a Visual Analogue Scale (VAS- (from 0 to 100)
|
12 months after surgery
|
KT
Time Frame: At Baseline
|
The distance between muco-gingival junction, in mm, (MGJ) to the most coronal point of the ridge using a periodontal probe
|
At Baseline
|
KT
Time Frame: 1 week After surgery
|
The distance between muco-gingival junction, in mm, (MGJ) to the most coronal point of the ridge using a periodontal probe
|
1 week After surgery
|
KT
Time Frame: 2 weeks After surgery
|
The distance between muco-gingival junction, in mm, (MGJ) to the most coronal point of the ridge using a periodontal probe
|
2 weeks After surgery
|
KT
Time Frame: 4 weeks After surgery
|
The distance between muco-gingival junction, in mm, (MGJ) to the most coronal point of the ridge using a periodontal probe
|
4 weeks After surgery
|
KT
Time Frame: 3 months After surgery
|
The distance between muco-gingival junction, in mm, (MGJ) to the most coronal point of the ridge using a periodontal probe
|
3 months After surgery
|
KT
Time Frame: 6 months after surgery
|
The distance between muco-gingival junction, in mm, (MGJ) to the most coronal point of the ridge using a periodontal probe
|
6 months after surgery
|
KT
Time Frame: 12 months after surgery
|
The distance between muco-gingival junction, in mm, (MGJ) to the most coronal point of the ridge using a periodontal probe
|
12 months after surgery
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- VCMX vs CTG
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
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