- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02802319
Ridge Preservation Following Tooth Extraction Using Porcine and Bovine Xenograft Materials
The study is a two-arm, parallel-design, randomized, prospective clinical trial designed to examine histologic wound healing following ridge preservation using bovine xenograft and porcine xenograft materials.This protocol involves procedures that are standard care. All materials are FDA-approved materials being used in an FDA-approved manner. The test group subjects will have extraction sockets grafted with porcine xenograft (Zcore). This test group will be compared to an active control group using bovine xenograft (Bio-Oss). The null hypothesis is that there will be no significant difference in formation of new vital bone between treatment groups (primary outcome).
Each subjects will have a non-molar tooth extracted and the socket grafted with either test or control graft material. At the time of dental implant placement 18-20 weeks after tooth extraction a small core biopsy specimen will be removed from the implant site. The core biopsy will then be evaluated for the primary histologic outcome of % vital bone formation and secondary histologic outcome of % residual graft material.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
The study is designed to examine histologic wound healing following ridge preservation using bovine xenograft and porcine xenograft materials.
This entire protocol involves procedures that are standard care. The study is a 2-arm, parallel-design, randomized, prospective clinical trial. The test group subjects will have extraction sockets grafted with porcine xenograft (Zcore). This test group will be compared to an active control group using bovine xenograft (Bio-Oss). The null hypothesis is that there will be no significant difference in formation of new vital bone between treatment groups (primary outcome).
In keeping with the protocol our study group has used several times before, the plan will be to extract non-molar teeth and graft with the test/control materials. Each subject will provide a single non-molar tooth site for study treatment. The graft material will be covered with a non-resorbable dense polytetrafluoroethylene (d-PTFE) membrane (TXT-200 singles, Osteogenics Inc). This d-PTFE membrane will be removed 4 weeks after placement during the 4-week post-op visit. Following 18-20 weeks of healing, the dental implant will be placed. To place a dental implant, an osteotomy (hole in the bone) is prepared into which the implant is placed. This osteotomy can be prepared with either a solid drill, in which case the bone that is removed is suctioned into the suction system, or with a hollow trephine drill into which a core of bone can be collected. The only "research procedure" being done in the current study is the collection of this bone core biopsy for histologic evaluation. The core biopsy will then be evaluated for the primary histologic outcome of % vital bone formation and secondary histologic outcome of % residual graft material.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Texas
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San Antonio, Texas, United States, 78229
- UT Health Science Center School of Dentistry
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Patients will be included in this study if they qualify the following inclusion criteria:
- Live within 50 miles from the School of Dentistry, University of Texas Health Science Center at San Antonio
- Are able to attend a minimum of 6 visits over a 4-5 month period, as required by the study protocol
- A single rooted tooth that has been identified as requiring extraction
- Desire a dental implant to replace the missing tooth
- Have adequate restorative space for a dental implant-retained restoration
- Have at least 10mm of alveolar bone height, without impinging on the maxillary sinus or inferior alveolar canal.
- Have a dehiscence of the buccal or lingual bony plate of the tooth socket extending no more than 50% of the total depth of the socket.
- Female patients who have undergone a hysterectomy, tubal ligation, or menopause, and non-pregnant women of child-bearing potential.
- Are nonsmokers or former smokers. Current smokers may only be included if they smoke <10 cigarettes per day
Exclusion Criteria:
- Patients who live more than 50 miles from the School of Dentistry, University of Texas Health Science Center at San Antonio
- Patients who do not meet all the inclusion criteria or who will not cooperate with the required follow-up schedule.
- Patients will are mentally incompetent, prisoners, or pregnant.
- Pregnant women or women intending to become pregnant during the study period.
- Smokers who smoke >10 cigarettes per day
- Clinical and/or radiographic determinations which will preclude inclusion in this study are: Active infection other than periodontitis; Inadequate bone dimensions or restorative space for a dental implant; Presence of a disease entity, condition or therapeutic regimen which decreases probability of soft tissue and bony healing, e.g., poorly controlled diabetes, chemotherapeutic and immunosuppressive agents, autoimmune diseases, history of bisphosphonate use or long-term steroid therapy
- Positive medical history of endocarditis following oral or dental surgery.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Test: Porcine Xenograft (Zcore)
Ridge preservation bone grafting surgery with porcine xenograft (Zcore)
|
Ridge preservation bone grafting after tooth extraction
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Active Comparator: Active Control: Bovine Xenograft (Bio-Oss)
Ridge preservation bone grafting surgery with bovine xenograft (Bio-Oss)
|
Ridge preservation bone grafting after tooth extraction
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
% Vital Bone Formation (Histological)
Time Frame: 18-20 weeks after ridge preservation
|
histologic determination of % vital bone formation
|
18-20 weeks after ridge preservation
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
% Residual Graft Material (Histological)
Time Frame: 18-20 weeks after ridge preservation
|
histologic determination of % residual bone graft material
|
18-20 weeks after ridge preservation
|
Collaborators and Investigators
Investigators
- Principal Investigator: Brian L Mealey, DDS, MS, UT Health Science Center at San Antonio, School of Dentistry
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
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
- HSC2016-0285H
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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