- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03468998
The Influence of Bone Allograft Particle Sizes on the Quantity and Quality of New Bone Formation in Grafted Extraction Sockets and Edentulous Ridges
A Randomized Trial to Evaluate the Effect of Allograft Bone Particle Size on Histomorphometric and Clinical Outcomes Following Ridge Preservation/Augmentation Procedures
This study will evaluate the effect of allograft bone particle size on the bone quantity and quality following socket grafting and lateral ridge augmentation in preparation for endosseous implant placement.
Pre (baseline)- and post-grafting (3 months for sockets and 6 months for edentulous ridges) clinical as well as 2- and 3-dimensional radiographic measurements will be used to evaluate the differences between sites grafted with small vs. large particle sized bone allografts.
Histological analysis will be performed at time of surgical re-entry of grafted sites to place the dental implants, and assessed for differences in new bone formation between the 2 types of grafts.
Study Overview
Status
Detailed Description
This study is a prospective, two-arm, randomized trial that will evaluate and compare the bone healing following ridge preservation of extraction sockets (RP, Arms 1 and 2) or lateral ridge augmentation of edentulous sites (RA, Arms 3 and 4) using either small particle (SP) or large particle (LP) mineralized cortico-cancellous bone allografts in a total of 48 patients (12 in each arm).
Study approval was obtained from the university's institutional review board. Qualifying participants and defects are randomized following a computerized permutation block to receive either LP or SP allografts on day of surgery. In the RP arms, tooth extraction is performed with a flapless minimally invasive technique, followed by socket grafting with a randomized graft covered with a collagen dressing and sutures. In the RA arms, lateral ridge augmentation is conducted utilizing a randomized bone graft covered by a collagen membrane fixated with tacks.
The mineralized cortico-cancellous bone allografts utilized in this study were all obtained from the same donor, lot and tissue bank to account for variation in age, race, gender and related healing potential of different graft sources.
In the RP arm, bone core biopsies will be harvested at time of implant placement 3 months following socket grafting, whereas similar biopsies will be obtained at 6 months following lateral ridge augmentation in the RA group. These 2x2x6 mm bone cores will then undergo histological and histomorphometrical analyses to determine qualitative and quantitative healing differences between LP and SP in all study arms.
Clinical measurements are gathered at 2 time points (grating and implant placement) at all defects and will be compared for differences.
Cone beam computed tomography (CBCT) initial scans are conducted immediately following socket grafting (RP arms) and prior to ridge augmentation (RA arms) and second scans obtained prior to implant placement (all RP and RA arms). Virtual implant planning software (coDiagnostiX) will be utilized to assess and compare the 2- and 3-dimensional changes for all defects.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
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Alabama
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Birmingham, Alabama, United States, 35294-0007
- University of Alabama at Birmingham
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-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- English speaking
- At least 18 years old
- Must be a patient of the UAB Dental School
- Able to read and understand informed consent document
- Need for implants to replace missing tooth or teeth in at least one quadrant of the mouth.
- Hopeless tooth or teeth planned to be replaced with dental implant(s)_socket with residual 4 walls following minimally invasive tooth extraction (a dehiscence of <3mm may be included) or insufficient alveolar ridge width for endosseous implant placement defined as 5mm or less as determined by bone sounding and cone beam computed tomography (CBCT) scan.
- Patient and/or guardian is willing and able to comply with the preoperative and postoperative diagnostic and clinical evaluations required.
Exclusion Criteria:
- Non-English speaking
- Less than 18 years old
- Smokers/tobacco users (>10 cigarettes/day)
- Patients with systemic pathologies or conditions contraindicating oral surgical procedures or adversely affecting wound healing
- Patients with significant medical conditions or habits expected to interfere with bony healing.
- Patient is a poor compliance risk (i.e., poor oral hygiene, history of alcohol or drug abuse)
- Bone dehiscence of >4mm following tooth extraction or Vertical loss of bone at edentulous ridge
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 |
---|---|
Active Comparator: Ridge Preservation with Small Particle Allograft
|
Small Particle Bone Allograft of 0.25-1.0
mm placed in extraction socket
|
Active Comparator: Ridge Preservation with Large Particle Allograft
|
Large Particle Bone Allograft of 1.0-2.0
mm placed in extraction socket
|
Active Comparator: Ridge Augmentation with Small Particle Allograft
|
Small Particle Bone Allograft of 0.25-1.0
mm used in lateral ridge augmentation (Guided Bone Regeneration) and covered with a collagen membrane
|
Active Comparator: Ridge Augmentation with Large Particle Allograft
|
Large Particle Bone Allograft of 1.0-2.0
mm used in lateral ridge augmentation (Guided Bone Regeneration) and covered with a collagen membrane
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
New Bone Formation (in %) With the Use of Small vs. Large Particle Bone Allografts
Time Frame: 3 months following socket preservation and 6 months following ridge augmentation
|
Compare histomorphometric amount of new bone formation (in %) between small and large particle bone allografts following ridge preservation and ridge augmentation procedures using core biopsies harvested at time of dental implant placement.
|
3 months following socket preservation and 6 months following ridge augmentation
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Radiographic Ridge Dimensional Changes (in mm) as a Result of Ridge Preservation and Ridge Augmentation Using Small vs. Large Particle Allograft
Time Frame: from time of grafting until implant placement (3 months following ridge preservation and 6 months following ridge augmentation)
|
Using cone beam computed tomography and implant planning software, the bucco-lingual ridge width is measured (in mm) relative to a fixed digital reference and compared between the 2 bone particle groups
|
from time of grafting until implant placement (3 months following ridge preservation and 6 months following ridge augmentation)
|
Collaborators and Investigators
Investigators
- Principal Investigator: Ramzi V Abou-Arraj, DDS, MS, University of Alabama at Birmingham
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Other Study ID Numbers
- RAP-17
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.
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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